Mini-shaving device for grooming facial hair

FIELD OF THE INVENTION
This invention relates in general to manual mustache shaving devices, and in particular to small, lightweight manual mustache shaving devices which are easy to fabricate and have a razor-sharp cutting edge, and a fingertip grip which can easily be gripped between and controlled by a user's fingertips for precise mustache cutting and shaving.
BACKGROUND OF THE INVENTION
It is a common practice to trim the hair forming a mustache with scissors or with an electric mustache trimmer device. However, it is difficult to shape the upper and lower peripheral edges of a mustache with either a scissors or an electric trimmer. The devices currently available are usually large and cumbersome, and tend to block the view of the mustache edge, thereby making a clean straight cut difficult. The typical shaver or trimmer currently available is gripped in a manner which requires manipulation of the wrist and/or arm in order to effect movement of the device, thus making meticulous trimming of the mustache inherently difficult. Further, many of these devices are relatively complex and expensive. Even for those mustache trimming devices which are simple and/or do not obscure the field of view, it is very difficult to cut a clean straight line along the periphery of the mustache.
Thus, there has been a need for some simple, inexpensive, light-weight device for enabling an individual to easily and accurately shape his own mustache or sideburns by manipulating the device between the forefinger and thumb, and to do so even when the hair is wet and lathered. In addition, it would be desirable to have an instrument which is sufficiently inexpensive so that it may be discarded and replaced when the blade becomes inefficient (i.e., dull). This would enable the user to always have a device with a sharp razor edge whenever it is used, thereby providing optimum cutting and trimming performance.
A number of devices have been designed to shave the face or trim the mustache. Representative U.S. patents include the following: U.S. Pat. No. 778,388 to Warren teaches a razor device with a handle for shaving the face. This disclosure teaches a device for holding a standard safety razor secure to facilitate honing or stropping the blade. U.S. Pat. No. 3,557,448 to Shead discloses a retractable razor blade holder to hold a standard safety razor, thereby serving as a replacement for the straight razor commonly used by barbers and hair cutters. U.S. Pat. No. 5,009,003 to Grange discloses a razor that has an improved handle to improve ergonomics and hand control.
There are other razor blade disclosures, beyond those disclosed above, that also disclose a device for shaving and cutting of hair. However, common amongst all of them of which I am aware is a lack of precise control that is needed to safely and conveniently distinctly shape and form the exterior edges of a hairline on a mustache or sideburn.
There are currently many devices that trim and cut hair by using a comb-like device with a sharpened edge interposed between the fingers of the comb. The following patents are representative. U.S. Pat. No. 1,976,290 to Motley teaches a comb type trimmer that has a blade exposed through the teeth of the comb portion. U.S. Pat. No. 2,568,368 to Sayer discloses a haircutting device that has teeth portions to guide and aid in cutting the hair. U.S. Pat. No. 1,217,288 to Donnelly discloses still another comb type safety razor holder that can be used to trim hair while keeping the blade away from the skin by the use of fingers or recesses. While all the aforementioned comb-like devices are sufficient for hair cutting, these devices also lack the ability to come in direct contact with the skin and shave off the hair at the surface of the face. Further, similar to the shavers discussed above, these aforementioned devices are large and cumbersome making minute manipulation very difficult.
Thus, there has been a need for some simple, inexpensive, lightweight device for enabling an individual to easily and accurately shape his own mustache and to do so even when the mustache hair is wet and lathered. The device must be able to effectively remove hair from the mustache at the peripheral edges and be capable of minute manipulation. In addition, it would be desirable to have an instrument which is sufficiently inexpensive so that it may be discarded and replaced frequently.
Further, there is a need to be able to trim the hair of the mustache with precision to form a uniform mustache line at the lip and above the mustache. This requires being able to not only trim the mustache hair but also be able to shave the hair at the skin line.
Therefore, there is still a need for a mustache shaving device which allows a user to precisely shave and shape the hair of his own mustache hair at its peripheral edges, and to easily trim the remaining mustache hairs precisely to any desired length.
Thus, it is an object of the present invention to provide a class of mustache shaving devices which meet the foregoing needs and overcome the limitations of earlier mustache shaving or trimming devices.
An object of this invention is to provide a simplified, sharp edged, device which is small in size and lightweight and formed so as to be easily held between the user's thumb and forefinger and easily manipulated by the user for precisely shaving his mustache.
Another object is to provide a small, lightweight fingertip shaver that has a fingertip grip portion positioned to allow the user to see what he is trying to shave and also to be able to shave or trim the hairs of his mustache without having his fingers, which are manipulating the device, come in contact with the face by the hand.
Yet another object of this invention is to provide a cutting device that utilizes a miniature razor blade which is considerably smaller than the standard 12 inch (3.8 cm) long razor blade and that allows the user to have a much more sensitive touch when trying to shave the perimeter of his mustache.
Still yet another object of this invention is to provide a shaving device having a miniature cutter head, in which is mounted a thin metal strip having a razor sharp edge, and an integral handle portion which may be gripped between the user's fingertips, and a manually removable and replaceable, plastic cover which fits over, and is frictionally held upon, the cutter head for encasing the sharp edge.
One more object is to provide an accessory for a mustache shaving device which allows a user to easily manually trim his mustache hairs to one of a plurality of lengths predetermined by the size and arrangement of the accessory on the device.
SUMMARY OF INVENTION
This invention relates to simplified mustache shaving devices which are so small and lightweight that each can be easily gripped by a user between his fingertips for precise cutting and shaving of the peripheral edges of his own mustache. It also relates to special accessories and cases for my novel shaving devices which help make these precision shaving instruments more versatile and easy to use, and to transport and store.
In several embodiments of this invention disclosed herein, there is provided a mustache shaving device in the form of an elongated, narrow, body or strip having one end formed as a fingertip-grip portion and the opposite end formed as a cutter end or head portion. The fingertip grip portion is quite small and can also be properly considered or called a fingertip pinch grip tab. The lower side of the head is provided with a channel within which a narrow metal strip or blade is mounted. The blade has a sharpened edge of razor quality which extends outwardly of the channel so that this edge is exposed along a longitudinal side of the head. The razor sharp edge may be straight or curved, or may have both straight and curved sections. In addition, the blade edge may be blunted at one or both ends if desired to enhance a user's sense of control over the end sections of the blade edge.
My shaving devices are particularly useful for precisely shaving and shaping the upper edge periphery of the mustache beneath the user's nose including the sloped areas of the naso labial fold located between the nose and upper lip. Moreover, my shaving devices are sufficiently inexpensive in construction that each one may be readily discarded and replaced after a limited number of uses, thus providing the user with a device having a new, sharp razor edge, so that he can more effectively and precisely trim and shave the periphery of the mustache. My mustache shaving devices are very small and compact and are designed to be used in addition to, and as a useful supplement to, the standard razor blade systems for shaving. My devices will help the users thereof achieve a clean, smooth, shaped peripheral mustache line. Each of my designs provides a user with sensitive fingertip control. So each one will enable a user to trim and shave his own mustache to its optimal appearance without undue effort, especially after he has some practice with it.
The shaving devices of my invention, in addition to being small and lightweight, are each especially arranged so that they can be easily gripped by the user between his fingertips and manipulated by finger movement alone so that the user can more easily shave the peripheral edges of his own mustache. In most of my embodiments, the shaving device comprises: (1) an elongated body having an elongated forward cutter end portion and an elongated rear fingertip pinch grip portion rigidly joined to the cutter end portion, and (2) a generally flat, elongated blade having an elongated razor sharp edge no longer than about an inch (about 2.5 cm) and having a substantially straight elongated dull edge section mounted to the cutter end portion. The fingertip grip portion has an overall size approximately as large the area between tips of the user's thumb and forefinger when the tips are pressed together. The overall size of the fingertip pinch grip portion is about as large as the overall size of the cutter end portion. The fingertip pinch grip portion has a major centerline or axis which is offset from the major centerline or axis of the cutter end portion in a direction that places the pinch grip portion further away from the sharp edge of the blade. In addition, since the head portion is located forwardly of the fingertip grip portion, neither the user's fingertips on the device, nor his fingers or hand obstruct his view of the razor blade as he watches himself in the mirror as he shaves his mustache and its periphery with the device.
Shaving and trimming of one's own mustache is often done while the hands are wet. The various embodiments of my invention preferably include one or more means to enhance the user's grip on the fingertip pinch grip tab. For example, several of my embodiments have a pinch grip tab provided with raised ridges, while others incorporate bumps or knurling to accomplish the same goal. In still other embodiments, the opposed surfaces of the fingertip grip portions are themselves shaped so as to provide added gripping security for the user. This is done by means of dished out portions or valleys on the fingertip grip portion to provide a comfortable seat for the finger and thumb as the device is manipulated adjacent the user's face.
In several embodiments herein, a cover is provided to protect the user from inadvertent cutting by the sharpened edge of the razor sharp blade when the device is not in use. These blade covers can be either slipped on, snapped on, or entirely encapsulate, the entire shaving head of the device of the present invention. To further enhance the versatility of my razor blade shaving devices, I have provided special accessories, as part of my invention, that snap or slide onto the head of the shaving device to simultaneously provide both protection against the sharpened edge of the blade and to assist the user in trimming his mustache hair to a desired length. For example, a few embodiments of my slip-on guard cages of my invention have elongated fingers and slots, to provide a guard for the shaving blade while allowing the facial hair to be trimmed to length with a comb-like sweeping of the guard over the mustache. These guard cages can be symmetrical or asymmetrical in shape about the blade plane. My asymmetrical design allows the user to have three or more predetermined distances at which the blade may be held away from the skin. The specific distance depends on the thickness of the exterior walls of the slide-on cage between the exterior cage surface and skin. Still yet another embodiment features a guard cage which snaps onto the head of a mustache shaving device at any of several different heights relative to the sharpened edge of the blade. This type of adjustable cage allows my mustache shaving devices to be used in many applications such as trimming sideburns, short beards and/or eyebrows, as well as mustaches.
Still yet another accessory for my mustache shaving devices is a "steadyrest." This accessory is a detachable support structure which can be slid onto (and off of) the cutter end portion of the shaving device. It has an elongated planar guide or leg member extending downwardly, parallel to and offset slightly from the blade. This guide member extends about the same distance from the main portion of the head as does the sharpened blade edge. The steadyrest assists the user in placing the sharpened blade against his face. Basically, the user can place the leg member against his skin first, and use it as a guide around which he can slowly pivot the attached shaving device until the blade-sharp edge just touches his face. At that point, the razor sharp edge is in position and ready to shave away unwanted stubble or any longer facial hair that is no longer wanted.
As mentioned above, my shaving devices are sufficiently inexpensive in construction that they may be readily discarded and replaced after a limited number of uses. However, one of my embodiments goes one step further and allows the blade itself to be removed by a slidable cartridge. This allows the shaving device body to be used over and over, thereby further making this embodiment of the device even more inexpensive to use.
Several other embodiments of my mustache shaving devices have the blade sharp edge guarded but in a way which leaves the blade edge substantially exposed. In these designs, the sharpened edge of the razor blade is wrapped in a protective casing that exposes most of the blade while providing the user with a protective barrier over a portion of the sharpened edge to reduce the chance of accidental nicks or cuts. As mentioned above, the accessories also provide a degree of safety both in use and in storage. Because my mustache shaving devices and special accessories are sufficiently compact and versatile, they should prove to be a useful addition to almost every one's shaving or toiletry ensemble.
To further facilitate the transport and storage and carrying the devices and accessories of my invention, I have provided specially-configured carrying cases to assist the user in safely carrying and storing my shaving devices. For example, all of my slip-on comb-like accessories can be used as a protective sheath. Also, I have included several specific carrying cases to achieve a similar goal. One of such case is a foldable plastic shell in which the mustache shaving device is inserted into a custom-formed half-chamber of the shell and a flexible hinge allows the second half of the shell, which is a mirror image of the first half, to fold over and snap together, thereby encasing the shaving device. Another is a flexible pouch carrying case that has a snap closure positioned to create a locking pocket conforming to the shape of and snugly retaining the shaving device therein.
Lastly, I disclose a custom carrying, display and storage tray for multiple identical mustache shaving devices of the present invention. A first device (which may be the unit currently in use by its owner) is inserted in horizontally-formed pocket which has room for the cage or cover accessory already attached thereon. The tray also preferably has a plurality (e.g., four) vertical custom-formed slots to receive a plurality (e.g., four) identically-shaped replacement mustache shaving devices. The orientation of slots may be alternated to provide a more compact package.
Most, if not all, of my mustache shaving devices, especially those that are assembled from pre-formed plastic pieces with separate blade strips, can be efficiently constructed and economically mass produced using technology and automated assembly techniques similar to that employed in current manual safety razor constructions. In particular, all molded plastic components for my mustache shaving devices can be made from conventional plastic materials using readily available molding machinery with dies that have been machined to produce finished parts, such as, for example, the integral fingertip grip and cutter head. The metal blade strips may be made with or without registration holes for receiving locating pins or protrusions in the cutter end of the head. Such metal blade strips can be sharpened along one edge and then cut to length using conventional equipment. Special fixtures and locator tooling can easily be made to allow the custom components of my mustache shaving devices to be automatically assembled at a very low cost. Thus, engineers in the safety razor field and users of wet shaving razor systems will recognize my mustache shaving device designs and accessories can be readily manufactured by using selected various manufacturing techniques already known as part of the predominant wet shave razor blade system manufacturing technology in use today.
Other objects, features, operating principles, and advantages of the mustache shaving devices of the present invention will become apparent upon studying the various Figures in the drawings and reading the following detailed description and subjoined claims.

BRIEF DESCRIPTION OF DRAWINGS
In the drawings, many different embodiments of the mustache shaving devices and related accessories of the present invention are shown. For purposes of illustrating the features and advantages of the present invention, the figures, in the interest of clarity, at times exaggerate somewhat the size, spacing, clearances and/or relative sizes of or between certain parts of my shaving devices, including their cutter portion or fingertip grip portions. In the various Figures, like reference numerals indicate similar components or features, and the Figures may be briefly described as follows.
FIGS. 1 through 3 show various views of a first embodiment 10 of a mustache shaving device of the present invention, where:
FIG. 1 is a perspective view of the shaving device having a dimpled pinch grip tab and a cutter head with its blade sharp edge enveloped by a head cover;
FIG. 2 is a perspective view of a like device 10N with diagonal gripping ridges and with the head cover removed; and
FIG. 3 is a side elevational view of the device 10O with two sets of crossing gripping ridges, with the cover removed and with the cover shown in cross-section.
FIGS. 4 through 6 show various views of a second embodiment 20, similar to the first embodiment, but with longer pinch grip and cutter head portions, where:
FIG. 4 is a perspective view, partially shown in phantom due to a partial cross-section being taken in the direction of arrows 4--4 of FIG. 3, which shows the blade disassembled from the head of the instrument;
FIG. 5 is an enlarged cross-sectional view of the device's head; and
FIG. 6 is a cross-sectional elevational view, similar to FIG. 5, but showing the cover in position upon the head.
FIG. 7 is a perspective view of a third embodiment 30 having a multiple-pin arrangement for engaging the blade, with the blade separated from the body of the device for illustration purposes.
FIG. 8 is a perspective view of a fourth embodiment 40 similar to the third embodiment, but having the front and rear corners of the blade covered.
FIG. 9 is a perspective view of a fifth embodiment 50, shaped like the FIG. 7 device, but similar to the FIG. 8 device, having a sleeve type of cover that is shown removed from the cutter head, and
FIG. 10 is an enlarged cross-sectional view taken in the direction of arrows 10--10 of FIG. 9 with the cover in position.
FIG. 11 is a perspective view of a sixth embodiment 60 formed from bent sheet metal.
FIG. 12 is a perspective view of a seventh embodiment 70 formed of sintered metal, such as a hard carbide, and having a flying wedge shape.
FIG. 13 is a view of a typical user holding, between the tips of his thumb and forefinger, a typical mustache shaving device of the present invention by its pinch grip tab portion to part of his mustache in order to shape the peripheral line of his mustache.
FIGS. 14A, 14B and 14C are a side elevational view, a front end view and a top view respectively of an eighth embodiment 80 of the mustache shaving device of the present invention, which has a fully exposed blade and a raised ridges on the fingertip grip portion thereof, and
FIG. 15 is a perspective view of the FIG. 14 mustache shaving device 80 held in a user's hand showing the approximate size of the device, and the interference effects when a fingergrip tab portion is too big.
FIGS. 16A, 16B and 16C are a side elevational view, a front end view and a top view respectively of a ninth embodiment 90 of the mustache shaving device of the present invention, with an exposed razor blade and a generally square fingertip grip portion having a cross-hatched gripping texture, and FIG. 16D shows an all-metal version 90N of the ninth embodiment which has a razor blade strip attached to one side thereof.
FIG. 17 is a side elevational view of a tenth embodiment 100 with an exposed blade having a curved edge and a vertically projecting balloon-like fingertip pinch grip portion for enhanced gripping.
FIG. 18 is a perspective view of an eleventh embodiment 110 having front cutter and fingertip grip portions that each have a similar generally rectangular shape, but are arranged at right angles to one another, and having a fully exposed blade with rounded sharpened front and rear corners.
FIG. 19 is a twelfth embodiment 120, similar to the seventh embodiment, but made with a plastic body of flying wedge shape including a fingergrip portion with raised gripping ridges for enhanced gripping and a short fully exposed razor blade.
FIGS. 20A and 20B are an exploded perspective view and a front end view, respectively, of a thirteenth embodiment of my mustache shaving system, whose shaving device 130 has a front cutter portion and a fingertip grip portion of generally similar trapezoidal shape, which are arranged in an horizontally offset inverted arrangement, and FIG. 20A shows a removable attachment referred to as a steadyrest or shaving guide, and FIG. 20B shows the steadyrest installed on the shaving device and being used to guide its razor-sharp edge along a user's skin.
FIGS. 21A, 21B and 21C are a side elevational view, a front end view and a top view respectively of an fourteenth embodiment 150, with a fully guarded razor blade strip and a generally circular fingertip grip portion having an enhanced gripping surface--cross-hatched.
FIGS. 22A, 22B and 22C are a side elevational view, a front end view and a top view respectively of a fifteenth embodiment 160 of my mustache shaving device, with the rear end of the razor blade strip being guarded and having a generally hemispherical fingertip grip portion arranged diagonally relative to the sharpened blade edge.
FIG. 23 is a sixteenth embodiment 170 which has an oval fingertip grip portion, and a blade strip having a blunted forward end and guarded rear end, with FIG. 23A being a side elevational view, and FIG. 23B being an end cross-sectional view taken along line 23B--23B of FIG. 23A showing another enhanced gripping design for the pinch grip portion which has a shallow concave profile.
FIG. 24 shows a seventeenth embodiment 180 of the shaving device of my invention, with an assembled cutter head which has a sharpened guard corner portion and a blunted blade edge portion, where: FIG. 24A is an exploded side elevational view, FIG. 24B is an assembled bottom view; and FIGS. 24C and 24D are enlarged fragmentary views from the side and front of the forward end of the cutter head.
FIGS. 25A, 25B and 25C are a side elevational view, a front end view and a top view respectively of an eighteenth embodiment 230, with an oval fingertip grip portion and a front cutter portion having a pair of glide strips positioned near the sharpened edge the razor blade strip.
FIG. 26 shows a nineteenth embodiment 250 of my invention, which also includes lubricated glide strips, where: FIG. 26A shows a side elevational view, FIG. 26B shows an enlarged front end view showing the pinch grip tab portion being pinched between a user's thumb and forefinger with the lubricated strip positioned against a user's face to shave the edge of his mustache; and FIG. 26C shows an enlarged partial fragmentary front end view detailing the geometry of the glide strips in relation to the cutting blade.
FIGS. 27 through 29 show three more mustache shaving devices of the present invention, which each have a guarded, but substantially exposed sharpened blade edge, where:
FIG. 27 shows a twentieth embodiment 280, with FIG. 27A being a side elevational view thereof that reveals a blade strip enclosed within intermediate finger-like guards that leave the sharpened blade edge substantially exposed to permit shaving of the skin adjacent the mustache periphery, and FIG. 27B being a front end view thereof;
FIG. 28 shows a twenty-first embodiment 300, like the FIG. 27 device, but having a removable, replaceable blade cartridge, with FIG. 28A being an perspective view showing the blade cartridge removed, with FIG. 28B being a slightly enlarged exploded view of the removable cartridge, showing its three parts which snap together; and
FIG. 29 is a twenty-second embodiment 320, similar to the FIG. 27 device, which features a blade strip having its sharpened partially shrouded in a folded metal guard perforated with three holes to expose portions of the sharpened blade.
FIG. 30 shows five views of the twenty-third embodiment 350 of my shaving device, with FIGS. 30A, 30B, 30C, 30D and 30E respectively being a top view, front perspective view, side elevational view, slightly enlarged rear end view, and enlarged cross-sectional end view, where: FIG. 30A shows the device pinched between a user's forefinger and thumb, and FIG. 30B clearly shows the offset pinch grip tab portion, and FIG. 30C shows the assembled blade construction, including three locating pins, and FIG. 30D shows the curved surfaces of the pinch grip tab portion, and FIG. 30E shows a cross-sectional view of the head portion with the blade installed and blade cap removed.
FIG. 31 shows a twenty-fourth embodiment 370 of the mustache shaving device of the present invention having a body with a peanut-side profile, made of two identical half-shell pieces, whose exteriors are each symmetrical about the transverse centerline, and a straight blade strip, where: FIGS. 31A and 31B are side elevational and right end views respectively of the device, and FIGS. 31C and 31D are exploded end and bottom views respectively of the device, and FIG. 31E is an interior side view of one of the half-shells.
FIG. 32 shows a twenty-fifth embodiment 390 with a peanut-shaped body, whose centerline of its cutter head portion is arranged at a substantial angle from the sharpened edge of the blade;
FIG. 33 is a twenty-sixth embodiment 400, having a peanut-shaped body like in FIG. 31, but having a blade strip with a curved sharpened edge.
FIG. 34 shows a twenty-seventh embodiment 410 of the mustache shaving device having a movable spring-loaded blade strip, where: FIG. 34A is a top view of the device; FIG. 34B is an exploded top view; FIG. 34C is a side cross-sectional view; FIG. 34D is an end cross-sectional view taken along line 34D--34D of FIG. 34A; and FIG. 34E is a view like FIG. 34C, which shows the blade strip placed against the user's skin so as to depress the right end of the blade strip.
FIGS. 35A and 35B show a twenty-eighth embodiment of the present invention, namely a combined slide-on cover guard and trimming accessory 460 that encapsulates the sharpened edge of the blade and has comb-like fingers, where: FIG. 35A is a perspective view of the slide-on cover guard cage being applied to a typical embodiment of my invention and FIG. 35B is an end cross-sectional view of an alternate slide-on guard 460N installed on the cutter head of the FIG. 34A device taken in the center thereof.
FIGS. 36A and 36B show a twenty-ninth embodiment of the present invention having a push-on cover guard and trimming accessory 490 encapsulating the sharpened edge of the blade and having comb-like fingers similar to that of FIG. 35 cover guard, where: FIG. 36 is a perspective view of the push-on cover guard cage applied to a grooved cutter head of a typical embodiment of my invention; and FIG. 36B is an end view of the push-on guard and cutter device showing the guard installed in the second of four sets of positioning grooves.
FIGS. 37A, 37B and 37C show a thirtieth embodiment of the present invention, with FIG. 37A being side perspective view of a removable asymmetrical trimming gauge 520 accessory installed on a typical one of my mustache shaving devices having a fully exposed substantially straight cutting edge, and FIG. 37C shows the same accessory from an interior enlarged fragmentary side view in longitudinal cross-section with the mustache shaving device of the present invention shown superimposed in phantom.
FIGS. 38A, 38B and 38C show a thirty-first embodiment of the present invention, which is a protective carrying case 540 preferably formed as a one-piece plastic snap-together case, where FIG. 38A is a perspective side view of the carrying case in the open position highlighting the inner pocket for receiving one of my mustache cutting devices of the present invention, such as the FIG. 37A device;
FIG. 38B is an end view of the carrying case in the open position illustrating the fastening posts and receivers in the upper and lower portions; FIG. 38C is an end view of the carrying case in the closed position showing the compact form and design.
FIGS. 39A, 39B and 39C show a thirty-second embodiment 320 of the present invention, namely accessory of the present invention in the form of a flexible plastic sheet carrying case with a snap-style button fastener for holding any one of my mustache shaving devices, where: FIG. 39A is a perspective side view of the carrying case in the closed position showing a typical mustache shaving device of the present invention with trimming accessory enclosed therein; FIG. 39B is an end view of an empty carrying case illustrating the snap button closure in its unfastened state; and FIG. 39C is an end view of the carrying case in the closed position with the snap fastened and having one of my mustache shaving devices secured within.
FIG. 40 shows in four views a thirty-third embodiment 330 of the present invention, which is of a storage/transport container system which has a vacuum-formed plastic base and a transparent lid for holding five typical mustache shaving devices of the present invention, where: FIG. 40A is a top view of the container system with its lid mostly cut away to reveal shaving units in the conforming slots and two empty slots; FIG. 40B is a side elevational view with the lid mostly partially cutaway; FIG. 40C is a side cross-sectional view taken along line 40C--40C of FIG. 40A showing the lid and shaving unit in place; and FIG. 40D is a side cross-sectional view taken along line 40D--40D of FIG. 40A showing the transparent lid being removed.
FIGS. 41-43 show in three views a thirty-fourth embodiment of the mini-shaving device of the present invention, which includes a one-piece all-metal in-line frame with a front or cutter head portion having an integral razor-sharp edge and a rear finger-grip portion, wherein: FIGS. 41 and 42 are an assembled perspective view and an exploded perspective view respectively which show a pair of plastic guard/finger-grip half-sections which are snap-fit together using post and hole locking portions, which posts pass through four corresponding registration holes in the metal frame; and FIG. 43 is an enlarged cross-sectional view taken along lines 43--43 of FIG. 41.
FIGS. 44-47 show a thirty-fifth embodiment of the mini-shaving device of the present invention, which includes a one-piece all-metal in-line frame with a front portion having a razor sharp edge and a rear finger-grip portion, wherein: FIG. 44 is an assembled perspective view which shows a one-piece all-plastic front guard whose two half-sections are joined by a living hinge central region and are snap-fit together using post and hole locking portions, which posts pass through three corresponding registration holes (not shown) in the front portion of the frame, with the rear portion having a very thin rubber gripping pad provided on either side thereof; FIG. 45 is an enlarged cross-sectional view taken along lines 45--45 of FIG. 44; and FIGS. 46 and 47 are detailed views from top and front end views respectively that show how the front guard looks before its half-sections are snapped together.
FIGS. 48-51 show a thirty-sixth embodiment of the mini-shaving device of the present invention, which includes a one-piece all-metal in-line frame with a front portion having a razor sharp edge, and rear finger-grip portion in similar manner as in the previous embodiment, wherein: FIG. 48 is an assembled perspective view which shows a one-piece all-plastic front guard whose two half-sections are joined by a living hinge central region, are snap-fit together using post and hole locking portions, and include intermediate finger-like projections that leave the sharpened blade edge substantially exposed between the projections to permit shaving; FIG. 49 is an enlarged cross-sectional view taken along lines 49--49 of FIG. 48; and FIGS. 50 and 51 are detailed views from top and front end views respectively that show how the front guard looks before its half-sections are snapped together.
FIGS. 52-55 show a thirty-seventh embodiment of the mini-shaving device of the present invention, which includes a one-piece all-metal in-line frame with a front portion having a razor sharp edge and a rear end finger-grip portion, wherein: FIG. 52 is an exploded perspective view which shows a one-piece all-plastic front guard whose two half-sections are joined by a hinged slotted central region that partially covers the sharpened blade edge with the half-sections being snap-fit together using post and hole locking portions; FIG. 53 is an enlarged assembled cross-sectional view taken along lines 53--53 of FIG. 52; and FIGS. 54 and 55 are detailed views from top and front end views respectively that show how the front guard looks before being snapped together.
FIGS. 56 and 57 show a thirty-eighth embodiment of the mini-shaving device of the present invention, which includes a one-piece in-line frame with a front portion having a pair of insertable dual-razor blade strip structures or cartridges mounted in opposing relation, wherein: FIG. 56 is an assembled perspective view which includes the use of a double-bladed razor blade cartridge; and FIG. 57 is a partially exploded cross-sectional view taken along lines 57--57 of FIG. 56.
FIGS. 58 and 59 show a thirty-ninth and fortieth embodiment, respectively, of the mini-shaving device of the present invention, which each include a one-piece in-line frame with a front portion having a pair of razor blade strip structures mounted in opposing relation, wherein: FIG. 58 includes a pair of single-razor blade strip structures mounted in opposing relation; and FIG. 59 includes a pair of double-razor blade strip structures mounted in opposing relation, with a wire guard system wrapped over the razor-sharp edges of each blade strip structure.

PREFERRED EMBODIMENTS OF THE INVENTION
The following detailed description of various embodiments of the mini-shaving devices and related accessories and cases of the present inventions are presented by way of example only and are not intended to limit the inventions to just those embodiments shown. My mini-shaving devices are intended primarily for mustache-shaving, but may be used for any other hair-shaving or hair-cutting purpose on humans or animals for which they are well-suited. The description herein of the various embodiments is intended to enable one skilled in the art to make and use the structures of these inventions in many forms. Thus, the overall scope of my inventions here should be understood to encompass the adaptations, variations, alternatives and different uses of the devices, accessories and cases that are described herein or are logically derived from the teachings herein.
Most of my mustache shaving devices, accessories and cases disclosed herein have structures that are symmetrical about their central longitudinal plane. In most of my shaving devices for example, the overall appearance and structure, including the cutter head portion and pinch grip portion, is symmetrical about this plane, which the razor blade strip also lies in. Unless otherwise indicated or shown to be asymmetrical, then, my devices, accessories and cases should be assumed to be symmetrical about their central plane. Thus, those in the art should appreciate that the descriptions herein of one side, end, or section of any given razor head portion or rear fingertip grip portion will also serve to describe the other half of the generally symmetrical structure on the opposite side of this central plane.
FIGS. 1, 2 and 3 illustrate three versions of a single mustache shaping and trimming device 10 having an elongated, flattened body 10B of the same overall size and shape. The body may be made of a molded plastic material or of a metal stamping or casting. The body of the device is divided into a head portion 11 and an integral fingertip grip portion 12, which allows the user to pinch and securely hold the portion 12 with just two of his index fingertip and thumb tip. For this reason, I often refer to this fingertip grip portion trapezoidal appearance when viewed from the side. Each pinch grip portion 12 has two substantially flat side surfaces 13. Enhanced gripping means, in the form of raised textured surfaces, are provided on the side surfaces 13 of each of the devices shown in FIGS. 1, 2 and 3, and represent the differences therebetween. In device 10 shown in FIG. 1, a series of rows of spaced raised bumps 14, which are each preferably substantially hemispherical in shape, form the enhanced gripping means. In FIG. 2, device 10N has provided with enhanced gripping means on side surfaces 13 in the form of raised diagonally arranged ridges 14' which have a pebbled texture achieved by a fine cross-hatching of the raised surface of the ridges. In FIG. 3, the enhanced gripping means of device 10O is in the form of checkered grips on surfaces 13 formed by a series of raised ridges 14' and 14" that criss-cross one another. For improved appearance, the raised ridges 14 and 14" in FIGS. 2 and 3 are arranged to be parallel to the sloped front and rear end surfaces of the pinch grip tab 12.
The overall length of all my different embodiments of shaving devices is relatively small, as for example, on the order of no more than 2 to 21/2 inches (5 to 7.5 cm) long, with a preferred length being between 1.5 inches (3.7 cm) to no more than about 2 inches (5 cm). The blade strip in all my embodiments is preferably no more than about 1.0 inches (2.5 cm) long, with 0.5 inches (1.3 cm) to 0.9 inches (2.3 cm) being a preferred range for the sharpened portions of blade lengths, and with 3/4 inches (1.9 cm) or less being the most preferred range. In addition, the grip portion may be and preferably is axially aligned with the head, that is to say, the axes of both the head portion and the grip portion lie in a common plane.
As best shown in FIG. 3, the body 10B is symmetrically arranged about a central axis A-0 which is diagonal to the longitudinal axis and major centerline A-1 of the head portion and to the longitudinal axis and major centerline A-2 of the pinch grip tab portion 12. These axes A-0, A-1 and A-2 all lie in the common plane. The axes A-1 and A-2 are arranged parallel to the longitudinal axis A-6 of the blade 16. As shown, the head portion 11 has its centerline A-1 offset from the centerline A-2 of the pinch grip portion 12 in an upward direction that places the pinch grip portion further away from the sharp edge 17 of the blade 16. This offset arrangement, which is used in all my shaving devices herein, helps ensure that the user's fingertips will not collide with or brush against his skin as he uses the instrument 10. In addition, the grip portion is offset rearwardly from the head portion 11 so that his fingertip grip on the pinch grip tab 12 will not obstruct his view of the edge 17 of the razor strip 16 as he views and supervises his own shaving operation in a mirror to ensure accurate results. Thus, it is to be understood that the pinch grip tab portion 12 is offset in two ways (upwardly and rearwardly) from the head portion 11 that holds the razor sharp blade. This double offset arrangement is one of the things that makes my mustache shaving devices so easy to use.
The head and pinch grip portions of device 10 each have a trapezoidal appearance when viewed from the side as best shown in FIG. 3, and the two portions 11 and 12 are substantially the same in size. This results in a balanced appearance which may be said to be pleasing or ornamental in nature. However, these two body portions do not need to be made the same size or shape.
The small overall size of the device 10 permits fingertip holding of the device, which results in better control of the cutting and shaving action. This enables the user to shape and shave his mustache with precision. Precise control and positioning is further facilitated by the lightweight of the device, as well as by the double-offset arrangement of body portions 11 and 12, as explained above. The combination of all of these features allows a user to pinch the tab or grip portion of any one of my shaving devices between his fingertips and use the blade by stroking it across his skin at the edges of his mustache in order to reshape the periphery of his mustache to his liking. Unlike the larger prior art devices which required movement of the hand and wrist to manipulate, all of my mustache shaving devices allow stroking of the razor-sharp blade by fingertip movement, which is especially important when detailing the finely shaped edges or periphery of popular precision mustache styles.
FIGS. 4 through 6 show a second embodiment 20 of the mustache shaving device of the present invention, which has a pinch grip tab portion 12N which is somewhat longer and less tall than the tab portion 12N of FIGS. 1-3. It has a substantially smooth side surface 13N. Otherwise, the device 20 is substantially identical to device 10 shown in FIGS. 1-3.
In shaving devices 10 and 20, head 11 is provided with a slot-like channel 15 which extends its full length. A single edge, flat, narrow, strip steel blade 16 is inserted in the channel 15 and is fastened therein. The blade may be fastened in place during the molding of the plastic head. The blade has a sharpened edge 17 which extends laterally outwardly of the longitudinal edges 18 which define the channel 15. The free edges 19 of the channel may be straight or may be provided with fingers 19F separated by notches 19N.
The corners 21 that are formed at the opposite ends of the edge 17, of the strip-like blade 16, are preferably blunted. This may be accomplished by angling the opposite blade ends 22 at an obtuse angle relative to the blade sharpened edge 17. Otherwise, the corners 21 may be blunted by rounding them somewhat. This blunting enables the user to apply greater pressure on the sharp edge of the blade to enhance the cutting action while trimming and shaping the mustache, without puncturing the skin which might otherwise happen on an extremely sharp corner. The blade length is long enough to easily maintain a repeated straight edge cut. However, it is short enough, so that it can easily allow cutting convex or concave, as well as straight, lines for various mustache shapes or trimming the sloping areas of the naso labial fold between the user's upper lip and nose.
The mustache shaper systems shown in FIGS. 1-6 include a narrow trough shaped plastic cover 25 for covering the sharp edge and the adjacent portions of the head. The opposite ends 27 of the cap are closed for closely containing the sloped ends of the head. Alternatively, one or both of such ends may be open, so long as the sharpened ends of the blade remain safely guarded. The cover is shaped and sized to snugly fit over, and to grip, the head frictionally. Thus, it may be removed forcibly by manually pulling it off the head or it may be manually pushed into position upon the head for covering and protecting the head and blade when desired.
With the constructions shown in FIGS. 1-6, the user may shape his mustache by gripping the pinch grip portion between the tips of his thumb and forefinger and then controllably moving the blade edge upon the peripheral edges of the mustache hairs and over the skin, where no mustache hairs are desired. This enables the user to precisely shape the mustache upper and lower peripheral edges located near the nose and above the lip, such as for forming a "pencil" style mustache or the like. Since the blade is short, it can easily shape the hair in the facial depression above the upper lip and shape the hair evenly on both sides of the mustache to any desired design. My mustache shaving instruments may be used once or a number of times. Because of their low unit cost and relatively small size, each of the instruments can be disposable, that is, it can be thrown away after a few uses and replaced with a like device.
Preferably, the body of my mustache shaving devices are each molded of a suitable, conventional plastic. The blade, in that case, may be held in the channel by the plastic material that is molded around it. However, the blade may be placed within a pre-molded body and then secured within the channel in the head by some suitable adhesive or by mechanical fastening means.
FIG. 7 shows a modified shaving device 30 wherein the blade 16N is positioned against an exposed surface 39 formed on the head 31 of a body 30B. The body may be made of molded plastic, or cast metal or the like. The blade 16N may be fastened to the body by a flat blade bar or blade cap 33 having integral pins 34 which extend through openings 35 in the blade and are seated in corresponding holes or sockets 36 formed in surface 39 of the head 31. The pins may be press fit into the holes for frictional fastening therein or may otherwise be fastened within the holes in any suitable manner. It should be appreciated that, if desired, the location of the registration pins 34 and receiving sockets 36 may be interchanged. In other words, the registration pins may be integrally molded as part of body 36, and corresponding registration holes provided in the cover 33.
FIG. 8 illustrates a modified shaving device 40 having a head 41 and fingertip pinch grip 42. Blade 46 is encased within a pocket 45 formed in the head so that its sharp edge 47 is exposed, but the corners at ends 43 of the blade are covered by extensions 44. The device 40 may be formed of a plastic molding with the blade embedded in the head during the molding process.
FIGS. 9 and 10 illustrate a fifth embodiment, namely manual mustache shaving system 50, which features the application of a sleeve-like cover 48 over the head 41 of the device 40. The cover is preferably made from plastic material resistant to cuts. The cover may be an open ended tube, as illustrated, or have one closed end. As illustrated in FIG. 9, the cross-sectional shape of cover 48 may be formed to conform to and snugly slide and fit over front end 49 of head 41, so that the cover is frictionally held upon the head and covers the exposed sharp edge 47 of the blade 46.
FIG. 11 is a perspective view of a mustache shaping device 60 which is formed of a single sheet of metal bent or stamped into a double bent head portion 61 and a pinch grip portion 62. Head portion 61 forms an integral blade section 66, whose free edge 67 is sharpened to form a razor sharp cutting edge.
FIG. 12 illustrates a one-piece, bar-like mustache shaping device 70. The device may be made of sintered metal material, such as, a hard carbide, using conventional sintering and molding techniques. One end of the device provides the head portion 71 and the opposite end forms the fingertip grip portion 72. The free end 79 of the head may be bevelled as shown at location 75 with a sharpened razor cutting edge 77 ground upon the edge of the bevel 75. Preferably, the bevelled free end is angled relative to the bar, as illustrated, and its corner 73 is blunted by the angled corner area. The user grips the pinch grip portion 72 of the bar and guides the sharpened, angularly inclined, bevelled edge 77 to controllably cut, trim and shape his mustache hair.
These trough-like or sleeve-like covers described above may be constructed for use with any of the devices described in this specification. The use of a cover with any one of my mustache shaving devices results in a convenient manual mustache shaping system which is sanitary, safe, easily usable and sufficiently inexpensive that it may be discarded after a limited number of uses. Further devices and accessories will also be described to show further ways in which the mustache shaving systems of the present invention may be implemented.
FIG. 13 shows a user grasping one of my mustache shaving devices (such as the FIG. 14 device). He is applying the sharpened edge of its razor blade strip to his face at the periphery of his mustache. He is holding the device by its pinch grip tab using the forefinger and thumb of his right hand. The other three fingers of his right hand are free, and may be used as shown to help steady his hand by placing one or more of those fingers against his face. By using this kind of fingertip pinch grip, and by looking in a mirror, the user of any of my mustache shaving devices is easily able to shape his mustache on all sides, as desired. The razor sharp edge of my shaving devices allows the user to not only trim the mustache hair that is to remain, but also to shave unwanted mustache hair or stubble from anywhere around the periphery of his mustache, even in the naso labial fold.
FIG. 14 shows an eighth embodiment of my invention, namely mustache shaving device 80. Its body is formed of a cutter holding portion 81 and an integral fingertip pinch tab portion 82. As in my other shaving devices, its body is a rigid structure which allows a user to apply force at pinch grip tab 82 and have that force transmitted directly to the cutter head 81 with minimal deflection. As in my previous embodiments, cutter holding portion 81 may be provided with a slot or channel 85 which extends substantially its full length, so that a flat narrow metal blade strip 86 can be inserted therein with a series of horizontally arranged spaced raised ridges 84. Like the ridges 14N and 14O in FIGS. 2 and 3, these ridges 84 provide an enhanced gripping surface that helps prevent the shaving device from rotating in the user's fingertips as the blade is pressed against his facial hair or adjacent skin. All of these raised ridges are preferably large enough, high enough and sufficiently separated or otherwise sufficiently roughly textured to give a user a secure grip and a good tactile feel.
FIG. 15 is another view of device 80 held by a pinch grip between the tips of a user's thumb and forefinger. FIG. 15 also illustrates the importance of having the pinch grip tab be sufficiently small, rather than too large, as will now be explained. A tab portion that is too large is represented by tab portion 82N. The extra area of tab portion 82N that extends beyond tab 82 is lined with dashes for ease of identification. Tab 82N, in my view is too large, because it protrudes beyond the tips of the gripping finger and thumb, and thus its rear area 84 may accidentally rub against the user's central finger. This kind of interference is undesirable, since it hinders making precise fingertip movements of the blade. Avoiding this potential problem is one of the reasons I strongly prefer that my mustache shaving devices to be two inches or less (about 5 cm) in overall length, and to have a fairly small gripping area just large enough to accommodate a fingertip pinch grip of an average size man's hand.
FIGS. 16 through 18 show the ninth through eleventh embodiments of my mustache shaving devices. These three embodiments respectively illustrate that the shape of the pinch grip tab portions, when viewed from the side, may be a square, a tear-drop shape, or an upright rectangle. The embodiments shown in FIGS. 21 through 23 show that the pinch grip tab portion may be circular, semi-circular or oval, and that pinch grip portions may be inclined at an angle relative to the cutter head. The pinch grip tab portions may also be made in other shapes as well. Also, in the embodiments shown in FIGS. 16 through 18, at least one portion of razor sharp edge of each blade is shown to be curved. Each of these designs will now be briefly reviewed.
In FIG. 16, device 90 includes cutter holding portion 91 and square pinch grip portion 92 which share a common edge surface, namely lower edge 93. The pinch grip portion may be etched as shown with a criss-cross hatching to improve gripping. A pocket 95 is provided in head portion 91 and receives the upper section of blade strip 96. A razor sharp edge 97 that is substantially straight extends a short distance (0.2 mm to about 0.7 mm) below lower edge 93. Forward end 98 of the blade sharp edge 97 is in the form of an arc such as quarter circle. Rear edge 99 of blade 96 is angled, and may be blunted if desired.
FIGS. 16B and 16D are two front views of two versions of the FIG. 16 device which help show just how thin the shaving devices of the present invention may be made if desired. For example, if device 100 is made from plastic, the overall thickness dimension 109 may in a range between about 0.2 mm and about 0.4 mm (or it may be made considerably thicker if desired). Just how thin my shaving devices may be made is a function of the rigidity of the particular materials out of which the device is formed. If less flexible materials, such as rigid metals are employed, then the devices may be less thick. For example, if the body of my device is made out of a flat steel sheet, thickness dimension 109 may be in the range of about 0.4 mm to about 1.0 mm if desired.
FIG. 16A and FIG. 16D, taken together as device 90N, show an all-metal construction, which is best understood from FIG. 16D. An all-metal shaving device may have a body stamped out of one piece of metal into any desired essentially flat shape disclosed in this specification. If the blade 96 is to be integral with the body, then the lower edge of the stamped stock will also represent the blade area, which will be in the same plane as the all-steel flat body. The lower edge of the blade area will be sharpened until it is razor sharp. A preferred approach, however, is to use a one-piece metal stamping for the body, and a separately prepared razor blade strip 96 attached thereto as shown in FIG. 16D. The flat stamped metal body may have all of its exposed sharp edges rounded by grinding them or by running the stamped stock through any conventional finishing operation, such as tumbling in an aggregate mix, which knocks off and/or wears down all sharp edges. The separate blade can be made from conventional razor blade metal alloys formed into ribbon-like blade strips that have one finely-sharpened edge which are then cut to length as desired. Such blade strips are usually quite thin (in the range of 0.05 mm to 1.5 mm and usually less than 0.15 mm) and therefore flexible. These very thin blade strips may be made stiffer by attaching each to a more rigid metal support stock by conventional laser welding or by any other suitable bonding technique such as epoxy adhesive drops. A series of such laser welds or drops are shown in FIG. 16A as circles 94.
FIG. 17 shows that device 100 has an elongated thin rectangular head portion 101 and a balloon or tear-drop shaped grip portion 102. Pocket 105 receives flat blade strip 106 whose razor sharp edge 107 may be substantially straight, or may be substantially curved as shown. This curve may take any desired shape. It is preferred that such a curve substantially match the curvatures of the skin to be shaved on a typical users face, such as those found around the naso labial fold area. For ease of manufacture, the curve may simply be a small part of a larger circle, such as a circle which has diameter one to two times the overall length 108 of blade 106. The distance 104 that the free portion of blade 106 extends may be varied as desired, such as between 0.4 mm and 1.5 mm.
FIG. 18 shows my mustache shaving device 110 which has a cutter head 111 and pinch grip tab 112 that are each rectangular in shape and of equal size. The head 111 and tab 112 form the body of the device 110 and are symmetrically arranged about the central axis A-0 of the body. Although the respective centerlines A-1N and A-2N of portions 111 and 112 are shown arranged at right angles, the angle 103 between these centerlines may be set at any angle anywhere in a range between about 45 degrees to about 120 degrees. The size of the head 111 and tab 112 may also be varied. When the sizes of the head 111 and tab 112 are the same, the central axis A-0 of the body and the axis A-1 and A-2 all intersect at point 104.
Blade 116 has a razor-sharp edge 117 with an elongated straight portion in between two curved portions 118 and 119. These curved portions may be razor sharp or blunted in whole or in part, as desired.
FIG. 19 shows another mustache shaving device 120 which has a flying wedge appearance. Its body is comprised of a unitary molded piece of plastic which forms the cutter head portion 121 and pinch grip portion 122. The blade 126 has a sharpened edge 127 and inclined leading and trailing edges 128 and 129. Blade 126 also has an upper section 123 provided with a plurality of holes 124 through which plastic material is captured during the molding process, thus permanently interlocking the blade 126 to head 121.
FIG. 20 shows a mustache shaving system 135 formed from a mustache shaving device 130 and a shaving guide attachment 140. The attachment 140, which I sometimes call a steadyrest, has front and rear end portions 141 and 142, that each resemble opposing C-shapes when viewed from above, and a substantially flat side surface 143 having a substantially straight and parallel upper and lower edges 144 and 145. The substantially open area bounded by the inside surfaces of C-shaped end portions 141, 142 and side wall 143 forms a substantially open groove 146 which slides into an engagement upon and is frictionally held upon corresponding end surfaces 147 and 148, as best shown in FIG. 20B.
As shown in FIG. 20B, lower edge 145 of installed steadyrest 140 is parallel to and held spaced apart from the sharpened edge 137 of blade 136 of device 130 as the user shaves his skin 138 to shape the edge of his mustache hairs 139. Steadyrest 140 thus provides a shaving guide to help a beginning user of my mustache shaving device 130 judge when razor blade edge 137 is coming into contact with his skin 138. The steadyrest 140 also helps distribute any excess downward force which such the user might inadvertently apply to his skin.
FIG. 21 shows three different views of my mustache shaving device 150, which features a generally rectangular head portion 151 and a generally circular pinch grip portion 152 interconnected through an integrally formed neck portion 153, which may be made shorter or longer than shown, if desired. The front and rear corners of razor sharp edge 157 of blade 56 is guarded by front and rear end sections 154 and 155 of head portion 151. The lower tips or edges of the sections 154 and 155 may be sharpened as desired to provide the user with blunted extensions of blade edge 157, and/or better visibility and/or control of the razor edge.
FIG. 22 shows my mustache shaving device 160 which has a rectangular head portion 161 and rectangular fingertip pinch tab portion 162. Portion 162 has a major axis inclined at about a 45 degree angle relative to the sharpened blade edge 167. Rear portion 168 of head portion 161 is about 0.4 mm to 0.8 mm long and more readily allows its user to place surface 169 firmly against his skin and then lower razor sharp edge 167 down toward the hair to be cut or skin to be shaved. Front edge 163 is inclined and corner 165 is blunted to minimize any chance of the corner 165 cutting user's skin.
FIG. 23 shows oval pinch grip portion 172 interconnected by a thick neck section 173. Portions 171 through 173 all lie in the same plane. The blade 176 has a rounded blunt front end 174. Rear section 178 of head 171 is similar to but shorter than section 178 in FIG. 22. FIG. 23B is a cross-sectional view showing that the side surfaces 179 of pinch grip portion 172 is slightly concave, thus providing an enhanced gripping action.
FIG. 24 shows a seventeenth embodiment of the shaving device of my invention. This device 180 has an assembled head or cutter portion 181 and a thicker pinch grip portion 182. Head portion 181 has front and rear blade guard portions 183 and 184 and a blade pocket 185 located therebetween. Blade 186 has a straight elongated sharpened edge portion 187 and three locating holes 188 through which registration pins 189 pass. The blade 186 fits snugly within the corresponding walls of pocket 185, and interior side surface 196 of pocket 185 snugly engages the corresponding side surface of blade 186. Blade 186, once installed upon pins 189 into pocket 185, is kept there by blade cap 190. Cap 190 is interlocked in place by pins 189 which enter corresponding locating holes in the cap. Cap 190 also fits snugly into its own pocket, as will now be explained.
Head portion 181 includes a further outer shallow pocket 191 with curved surfaces 193 and 194 that engage exterior edges of front and rear sections 195 and 196 of cap 190. Head 181 has four more registration pins 198 that engage corresponding holes 199 of cap 190.
Pinch grip portion 182 has a generally rectangular side profile with rounded edges, and features slightly concave side surfaces 203, which can best be seen in FIGS. 24B and 24E, for enhanced gripping action. The average radius of each concave surface 203 is preferably in the range of 1.5 cm to 4.0 cm. Transverse thickness dimensions 205, 206 and 207 may be adjusted if desired to provide concave surfaces which generally conform to the curvature of a typical user's finger and thumb in both horizontal and vertical directions as best shown in FIGS. 24B and 24E.
FIG. 24C shows an enlarged side fragmentary view of the front end portion of cutter head 181 in an assembled state. As shown therein, its blade 186N may have its sharpened edge 187 blunted at location 207 in the vicinity of front end section 183.
FIG. 24D shows in cross-section the end profile of the cutter head portion 181, and how it tapers inwardly so that its midpoint dimension 208 is less than its upper dimension 209. Further, lower end section 213 of front 183 may be more sharply tapered, for example, by curved concave surfaces 211 and 212 as shown in FIG. 24D. This sharp tapering of section 213 is preferably repeated at lower section 214 of rear area 184 shown in FIG. 24A. This tapered arrangement at locations 213 and 214 is believed beneficial since it allows their lower edges 215 and 216 to act as front and rear blunted edge extensions of the sharpened blade edge. As earlier noted, less skilled users may wish to press a blunted edge against his skin for alignment purposes, without fear of cutting or scratching his skin, in order to get a precise feel for where the razor is before he begins cutting and/or shaving facial hair along the periphery of his mustache. Further, this overall tapered design, especially the sharply tapered lower end sections 213 and 214, also helps maximize the user's view of the razor area even when upper dimension 209 is relatively thick.
FIGS. 25 and 26 show two mustache shaving devices 230 and 250 which utilize very smooth glide surfaces located a short distance from the razor blade edge on the lower part of the cutter head portion. These glide surfaces help provide controlled facial hair cutting at a predetermined acute blade angle, as best illustrated in FIGS. 26B and 26C. FIG. 26B is an enlarged view which shows a device 250 being gripped by user's forefinger and thumb in order to shave his mustache hairs, with a profile of his nose shown in phantom to make the view more readily understood.
Device 230 in FIG. 25 includes a generally rectangular cutter portion 231, an oval pinch grip portion 232, and an intermediate portion 233 interconnecting portions 231 and 232. All three portions lie in a common plane. The side surfaces of tab portion 232 includes a series of oval raised ridges 234 of the interior channel 235 in head portion 231 receives blade strip 236, which has a razor sharp edge 237. Angled glide surfaces 238 and 239 that are inclined at a desired acute angle relative to the common plane of device 230 are provided on the lower section 241 of head 231. Glide surfaces 238 and 239 may be integrally molded as part of the head section 231 or may be formed by separate elongated strips attached by a suitable fastener, such as adhesive or sonic welding to the lower section 241 of head 231. The planes defined by angled glide surfaces 238 and 239 preferably intersect at razor sharp edge 237 of blade 236, in the way that is shown in for device 250 in FIG. 26C.
FIG. 26A shows that shaving device 250 has a cutter head 251 and paddle-like pinch grip portion 252 provided with cross-hatched lines 254 (which may be shallow grooves or tiny raised ridges) to enhance gripping action. As in FIG. 25, a pocket 255 receives blade 256 which has a straight razor sharp edge 257 with blunted forward and rear corners. As best shown in FIG. 26C, the lower section 261 of head 251 is provided with lubricated emollient glide strips 262 and 263 which have flat angled surfaces 258 and 259 which define glide planes that point intersect one another at edge 257 of blade 256. These glide planes are symmetrically arranged about the common plane and centerline 265 of device 250 at pre-determined angle .phi., which normally will be in the range of about 5 to 40 degrees, with angles in the range of 15 to 35 degrees being presently preferred.
Glide strips 262 and 263 each preferably include a solid water-soluble shaving assistance material that can also provide lubrication, whisker softening, razor cleaning, medicinal agents, cosmetic agents or a combination of the above as a part of the mustache shaving device. Such shaving aid strips are known in the art of modem manual shaving razors and often include one or more of these components, which are conventionally embedded in and formed as part of a glide strip typically affixed to a conventional T-bar razor somewhere in the working plane of the razor, often behind the razor sharp cutting edge. The shaving aid strip may be a shave-aiding agent combined with a solid, water-soluble micro-encapsulating or micro-porous structure which retains the agent. The strip can be the agent itself when it is a water-soluble solid. Exemplary materials constituting shaving aid strips are described in U.S. Pat. No. 4,170,821 to Booth.
FIG. 26B shows how the inclined surface 258 of lubricant strip 262 can be slid along the plane of skin 266 in the vicinity of mustache hairs 267 to provide controlled and very safe and easy cutting action in angle .phi.. FIG. 26B also helps illustrate the typical size of a pinch grip tab portion, such as portion 232 relative to the fingertips of a user's thumb 268 and index finger 269. It also shows, in combination with FIGS. 13 and 15 that slightly different fingertip gripping styles may be employed by a user on the pinch grip tab as he manipulates the typical one of my mustache shaving devices about all sides of his mustache.
FIGS. 27 through 29 show three embodiments of the mustache shaving devices of the present invention which feature substantially exposed yet guarded blades. These embodiments also illustrate that the mustache shaving devices of the present invention which are symmetrical about the center plane may be made from two substantially similar half-pieces whose exterior surfaces are substantially mirror images of one another. The shaving guard in each embodiment is characterized by a plurality of finger portions extending from the head portion of the instrument that extend below the lowest portions of the sharpened razor blade edge. Thus, each of these finger-like shaving guards place a plurality of short blunted plastic or metal edges between at least a portion of the skin to be shaved and the razor blade edge. This provides further insurance against accidental nicks or cuts which might be produced which a razor-sharp blade edge is pressed against the relatively soft and tender facial skin adjacent to the mustache. These substantially exposed yet guarded blade designs are thus expected to be popular with those who feel uncomfortable with placing an unguarded entirely exposed length of razor sharp steel against their skin. Since the razor sharp edges of FIGS. 27-29 are still substantially exposed, and can easily be moved in any desired direction, such designs will easily cut all of the unwanted facial hair from any region of skin around the users styled mustache in one or more fingertip strokes of the device against the skin in a direction transverse and preferably perpendicular to the blade plane. Each of the three devices with a shaving guard will now be described in detail.
The FIG. 27A shaving device 280 includes a body 280B made from two half-body sections each forming one-half of head portion 281 and pinch grip tab portion 282 of device 280. The left and right half body pieces 280BL and 280BR are best seen in FIG. 27B. Mating registration pins and holes represented by dotted circles 283 and mating slots and raised locking strips represented by rectangles 284 are used to join and interlock the two half-body pieces 280BL and 280BR together. Blade strip 286 includes razor edge 287 and holes 288 which receive registration pins. The internal construction of the FIG. 27 device may be similar to that shown in device 180 shown in FIG. 24A in that a channel complementary to blade 286 can be provided internally within the half-body parts 280BL and 280BR. Head portion 281 has front and rear end sections 291 and 292 and a plurality of intermediate finger sections 293 which are preferably spaced equally from one another and preferably leave about 60 to about 90 percent of the sharpened blade edge 87 exposed in the four notched regions 294 between the end sections and fingers. The guarding distance between the lowest portion of the end sections 291, 292 and fingers 293 may be in the range of 0.4 mm to about 1.2 mm, with a guarding distance in the range of 0.5 mm or less being presently preferred.
FIG. 28 shows, in a perspective view, a variation of my FIG. 27 design, a shaving device 300 that includes a removable, replaceable blade cartridge. Those details of the FIG. 28 device that or can be made the same as the FIG. 27 device will not be described, Instead, the description below focuses on the arrangements for blade cartridge. Device 300 includes a head portion 301 arranged to receive a blade cartridge and an integral finger grip portion 302, which together form body 300B. As in FIG. 27, the body may consist of two half sections 300BL and 300BR, each with external appearance that is the mirror image of the other. Device 300 also includes blade cartridge 303, which preferably is assembled, but may include a molded or die cast blade and cartridge if desired. The assembled blade cartridge, as best shown in exploded perspective view of FIG. 28B, includes a platform section 304 having an internal opening or channel 305 formed therein with whose front, rear and top surfaces correspond to the shape of and snugly engage corresponding surfaces of separate metal alloy blade 306 having razor sharp edge 307. A blade cap member 308 completes cartridge assembly 303 by engaging registration pins 309. Platform member 304 has an enlarged rectangular front end section 310 which abuts against the front end section 311 of head portion 301 when cartridge 303 is inserted in the rectangular opening 312 to an inters in head 303. Chamber 313 has two lower surfaces 314L and 314R which slidingly receive corresponding lower surfaces 315L and 315R respectively found on platform 304 and cap 308. Thin elongated slot 316 in head 301 extends between surfaces 314L and 314R, and is sized to snugly receive and frictionally grip the unsharpened lower side surfaces of blade 306 above sharpened edge 307, thus helping hold cartridge 303 securely in place within chamber 313 where it snugly fits on all sides. An optional mechanical latch arrangement (not shown) may also be provided to interlock inserted cartridge 303 into head portion 301 if desired.
One advantage of the mustache shaving system represented in FIG. 27 is that cartridge 303 may be repeatedly replaced whenever blade 306 is spent, thus allowing the body 300B of device 300 is reused again and again. Like with traditional manual razor systems having a cartridge, this replaceable cartridge feature may appeal to those who wish to have a premium grade expensive or styled body 300B, which might even made out or plated with a precious metal alloy, while the least expensive and most easily worn part namely the blade, is readily handled in a convenient cartridge and replaced as frequently needed or desired. In this regard, replacement cartridges may be sold be the six-pack or ten pack, just like disposable replacement razor blade cartridges for conventional T-bar razors are. If my mustache shaving devices become popular with barbers, then replacing the cartridge and blade for each new customer may also become desirable for health and safety reasons. Further, my blade cartridges can be made to withstand sterilizing medicinal solutions or even autoclave temperatures if desired by selecting proper materials for the cartridge assembly 303 such as but not limited to stainless steel or other metal alloys. Alternately, in a manner similar to the Schick injector series of cartridge razors, suitable cartridge blade dispensing devices may be developed and utilized, based upon the principles explained herein, to provide replacement of only the razor blade strip in the replaceable blade mustache shaving devices of the present invention.
FIG. 29 shows a third substantially exposed yet guarded blade shaving device 320 which is essentially identical in overall construction to device 280 shown in FIG. 27, except that the head section includes a thin metal sheath which serves to form a plurality of protective fingers as will shortly be described. Device 320 includes a body 320B consisting of left and right half body parts 320BL and 320BR. Assembled body 320B has a head portion 321 and finger grip portion 322, with the half parts interlocked by complementary slots and rails and pins and holes 284 and 283. A pocket 325 within head portion 321 receives blade 326 which has holes for receiving interlocking registration pins 309N that project out one of the half body parts into corresponding holes of the other half body part of body 320B.
As shown in FIG. 29C, sheath guard 311 is formed from a thin flat rectangular sheet of metal that is first perforated with three large oval holes 312 and punched with two sets of four smaller locating holes 328. As shown in FIG. 29D, the metal sheet is then folded in half and wrapped around the blade 326 before blade 326 is assembled into body 320B. The two sets of smaller holes 328 are in the same located at the same registration pins which interlock blade 326 in place also capture and hold the guard 311 in place. This general technique of using a metal sheath to form a shaving guard for a razor blade strip on a conventional T-bar razor is shown in U.S. Pat. No. 3,263,330 to Ferrara. Sheath guard 311 may be formed of any suitable material including fiber-reinforced plastic materials or stainless steel strip stock, and may have any suitable thickness, for example in the range of 0.05 mm to 0.15 mm.
FIG. 29B shows a bottom view of device 320. Like the FIG. 27 device, the four fingers 333 of the sheath guard 311 preferably leave about 60 to 90 percent of the sharpened edge of blade 326 exposed, and the lowest part of fingers 333 preferably extend below razor edge 327 by a distance in the range of 0.10 mm to about 0.3 mm.
FIGS. 29A and 29B show that body portion 322 of shaving device 320 may have a thickened front and rear portions 341 and 343 with a thin center portion 342 in between. Thicker portions 341 and 343 thus define opposed vertically arranged ridges which define a vertical trough in between, and provide a complex concave surface that enhances user gripping action. Further, such pronounced surface features also are believed to provide users with a good tactile feel to help enhance their sense of confidence in using my shaving instruments.
FIG. 30 shows my shaving device 350 which has a compound offset between its cutter portion 351 and pinch grip portion 352. This offset is provided by intermediate transverse section 353 that is substantially orthogonal to the plane of the blade 356 provided in head portion 351. FIG. 30A shows that the rear side of interconnecting portion 353 forms a pocket 354 into which the user's thumb tip may fit, thus enhancing the user's grip and sense of security in handling this instrument.
FIGS. 30A-30C show that pinch grip portion 352 has its major axis horizontally arranged above the major axis A-1 of head portion 351. Minor axis or centerline A-3 have been strip portion 352 is substantially displaced rearwardly of the minor axis and vertical centerline A-5 of head section portion 351.
FIGS. 30C and 30E show that head portion 351 may be an assembled structure including a pocket 355 which receives the blade 356 and cap member 358. Blade 356 has three holes which snugly fit over registration pins 359, and cap member 358 includes a blind registration hole 360 that engages the remaining free tip of registration pin 359. Elongated lip 361 of cap 358 fits into a corresponding corner part of pocket 355 above the blade.
As best shown in FIG. 30D, pinch grip tab 352 includes convex surface 366 and opposing concave surface 367 which together provide an enhanced gripping action and improved tactile feel for a user of instrument 350.
FIG. 31 shows an assembled shaving device 370, whose body 370B has a peanut-shaped side profile and is preferably formed of two fully-identical half-body pieces 370BL and 370BR. Assemble device 370 includes a blade holding head portion 371 and a pinch grip portion 372. Blade-receiving pocket 375 is formed in front portion 371. A second blade receiving pocket 378, that remains unused, is formed in the pinch grip portion 372 as a result of having two identical half body parts 370BL and 370BR.
Blade 376 assembled in chamber 375 located between body parts 370BL and 370BR. Complementary press-fit registration pins and holes 381-386 are provided as shown to interlock the two half-body parts together. If desired, this interlocking may be permanent by a cold-headed press fit or by sonically welding portions of the pins and holes together. Alternatively, the interlocking of body parts may be relatively loose, so that they can be readily pried apart by inserting a stiff knife blade into empty pocket 378 and twisting, and thus allowing a spent or dull blade 376 to be removed and a replacement blade 376 to be inserted. Because my mustache shaving devices of the present invention, particularly this device 370, are very inexpensive to manufacture, I prefer that the entire unit be disposed of rather than using replacement blades requiring disassembly of the device body.
FIGS. 31B and 31C show a right end views of device 370 in assembled and unassembled states. FIG. 31D shows device 370 from a bottom view in its unassembled state, with the half parts 370BL and 370BR aligned with one another and the razor blade 376, ready for assembly. Razor blade 376 includes holes 382N and 383N through which pins 382P and 383P will project to help lock blade 376 in place. Registration pin 382P on part 370BR is received in hole 382H in part 370BL. In a similar fashion, registration hole 383H in part 370BR receives pin 383P in part 370BL. This scheme of suffixes "P" and "H" also show how pins and holes 383 through 386 interconnect.
The use of identical half-body parts 370BL and 370BR in device 370 is believed to help reduce manufacturing costs and simplify assembly, since only one body part needs to be made. Although body 370B has a peanut shape, those in the art will appreciate that other body shapes for mustache shaving devices could well have symmetrical half body parts. One such example is the body part shown in FIG. 18.
FIGS. 32 and 33 show my mustache devices 390 and 400 which also have peanut-shaped side profiles and may be manufactured using the identical half body part shown and described for the FIG. 31 device. Device 390 in FIG. 32 has a head portion 391 and finger grip portion 392, and an internal pocket 395 receiving blade 396. Razor sharp edge 397 of blade 396 is at an angle 398 with respect to the major axis and centerline of head portion 391. This illustrates that centerline of the head portion and the straight edge of a blade carried thereby need not be parallel to one another. In FIG. 33, device 400 has a peanut-shape body with head portion 401 and pinch grip portion 402, and an oval pocket 405 for receiving blade 406 which has corresponding generally oval shape and an arcuate sharpened edge 407. Device illustrates that curved as well as straight blades may be utilized in and offset from the longitudinal axis of the head portion of my mustache shaving devices if desired.
FIG. 34 shows another assembled mustache shaving device 410 which features a floating razor blade and openings through the head around the blade. These openings allow any debris which may be caught within the blade pocket to be flushed therefrom, either by blowing air or running water through these openings.
FIGS. 34A and 34C in combination show the overall shape of device 410, which has a generally rectangular head portion 411 and pinch grip portion 412. The body 410B is formed into interlocking half pieces 410BL and 410BR, which each contain one half of the head portion and pinch grip portion. Body half piece 410BR, for example, includes head part 411R and pinch grip part 412R in FIG. 34C.
Device 410 includes a pocket 415 in head 411 that receives razor blade 416 whose razor sharp edge 417 protrudes from beneath the lower end of head 411 by a distance 418. There is a gap 419 above the top edge of razor blade within the pocket 415 in which the razor blade may move. A metal or plastic spring 420 with flexible fingers 420F and 420R biases the springs downwardly until the upper ends of oval holes 422 and 424 contact through retaining pins 426 and 428, thus stopping the downward travel of blade 416.
Spring 420 has a central section 420C resembling an inverted W which is captured between upper and lower blocks 425U and 425L. On either side of central block 425 in head 411 are openings 427 and 429 which open into a chamber 415 so that debris within the chamber may be flushed out or blown out.
As best shown in FIG. 34B, pins 431P through 435P from body part 410BR are provided to interlocking holes 431H through 435P in left half body part 410BL. Those in the art will appreciate that these pins may be made integral with one of the body parts or may be separate plastic or pins forcibly inserted at the time of assembly of device 410.
As shown in FIGS. 34B-34E, raised opposed surfaces 436L and 436R are provided about pin 426. Similarly, raised opposed surfaces 438L and 438R are provided around pin 428. These raised surfaces 436 and 438 are flat and parallel to one another and provide the opposed sets of flat smooth bearing surfaces against which adjacent surfaces around oval holes 422 and 424 of blade 416 may slide. Since the total contact area between the blade 416 and these bearing surfaces is not that great, blade friction is reduced. In addition, the extra clearance provided by raising surfaces 436 and 438 away from the larger outer walls of the chamber 415 provides a larger pathway through which debris, such as cut hair or shaving lather, may be readily flushed.
FIG. 34E shows how blade 416 is able to float against and adapt to the changing topography or surface 440 of a user's skin 442. Further, it shows how lower rear surface 444 of head portion 411 essentially takes the brunt of the user's downward forces through the head against the skin, while the rear end 446 of blade 416 floats up as needed against a light biasing force provided spring finger 420R, while spring finger 420F keeps front portion 446F of the blade 416 down against the user's skin. Accordingly, it should be appreciated by those skilled in the art that the floating blade structure and design of mustache device 410 provide further protection against a user accidentally cutting himself by inadvertently pressing down too hard while shaving unwanted facial hair from around his mustache.
FIG. 35A shows a combined cover guard and trimming accessory 460 of the present invention designed to fit on the head portion of my mustache shaving devices. Trimming guard or cage 460 is symmetrical about its longitudinal vertical plane. This accessory guard 460, and similar but asymmetrical trimming guard or cage 460N shown in FIG. 35BN, are each designed to enable mustache hair to be trimmed to different lengths as desired. The precise length cut obtained is measured from the razor sharp edge 17 of blade 16, as will shortly be explained.
FIG. 35 shows that the accessory guard structure 460 has an elongated generally hollow body with an elongated chamber 465 open at ends 466 and 467 guard 460. Upper openings 468 and 469 ensure that structure 460 can fit as far as necessary onto head portion 11 of device 10 without interference from the front 472 of pinch grip tab portion 12. An elongated groove 476 is provided in chamber 465 for receiving the lower portion of blade 16. A series of transverse slots 474 are provided in the lower half of structure 460, thus defining loop-like fingers 475 through which mustache hair may pass and be trimmed by the razor sharp edge 17 of blade 16 when the trimming accessory 460 is in use. The width and number of slots and fingers 474 and 475 may be varied as desired to enable the hair of the mustache to flow easily through the slots while maintaining an even height of cut. A few passes may be required to cut all of the mustache hair to a desired length. As shown in FIG. 35A, the structure 460 may be symmetrical about it elongated vertical plane. Alternatively, the structure 460 may be made asymmetrical, as indicated by structure 460N in FIG. 35B, so that different cutting heights may more easily be achieved.
In operation, after trimming guard cage 460 or 460N has been slid onto head 11 of mustache shaving device 10, a user then places the lower end portion 480 of structure 460 or 460N against his skin adjacent to his mustache. Then, with a transverse sweeping motion preferably perpendicular to the blade edge, the lower portion 480 is slid along the user's skin so that the mustache hairs pass through slots 474, thus allowing the razor sharp edge 17 to trim the hair to a uniform length above the skin. If the user holds device 10 such that the lowermost portion 482 of lower section 480 slides along the skin, a precise length of cut equal to dimension 462 will be obtained. If the user rotates the device 10 and guard with its attached guard 460 so that the surface 481 (i.e., the surface area of lower section 480 that is tangent to the plane defined by line 481P) is slid across the skin, then the mustache hairs will be trimmed by razor sharp edge 17 to a length equal to dimension 461. Likewise, if a user rotates the combined device 10 and structure 460 so that the surface 483 (i.e., the surface area of lower section 480 that is tangent to the plane line 463P) is slid along the skin, then mustache hair will be cut to a height equal to dimension 463. Further, the user, by rotating the structure 460 in between t-483, can obtain additional desired lengths of cut for trimming his mustache hair. Trimming guard 460 shown in FIG. 35A works in a similar manner. Thus, trimming guards 460 and 460N are well suited to further assist the user in trimming up his mustache to a preferred precision style. In addition, each of the guards 460 and 460N if left on the head portion of the shaving device, acts as a safety cover for the razor sharp edge of the shaving device when the device is not in use.
FIGS. 36A and 36B show another combined cover guard and trimming accessory, namely guard cage 490 of the present invention, which is adjustable, and is designed to fit on a specially modified head portion 501 of most any one of my mustache shaving devices, which can have a pinch grip tab 502 of any desired shape. The trimming guard or cage 490 is similar in many ways to cage guard 460, and thus only the significant differences will be noted here. Guard 490 has a lower portion 491 and two extending legs 492 and 493 forming a chamber 495 therebetween. The upper ends of legs 492 and 493 have inwardly facing wedge portions 497 and 498, which form or define a narrow channel 496 therebetween, that represents the topmost part of chamber 495. The width of chamber 495 is slightly greater than the average transverse thickness of head 501, while the width of channel 496 is sized to be somewhat smaller than the average thickness of head 501.
Wedge portions 497 and 498 are designed to frictionally engage one of the four sets of grooves 508A thru 508D and 509A thru 509D formed in opposite sides 503 and 504 of head 501. Each set of grooves 508 is positioned across from one another in a corresponding one of the grooves 509, and each extend longitudinally along opposite sides of head 501. Adjacent sets of grooves 508 and 509 are spaced apart at fixed distances, in the range of about 1 mm to about 3 mm apart, and preferably approximately 2 mm apart. Although FIG. 36 shows four grooves 508A-D and 509A-D, more or fewer grooves could be used with varying distances therebetween if desired without departing from the concept presented here. Elongated spacer ribs 512 and 513 extend outwardly from opposite sides of lower portion 514 of the head 501 and provide lateral support for the structure 490 which keeps legs 492 and 493 parallel to the outer sides 503 and 504 of head 501.
A series of transverse slots 494 are provided in the lower half of structure 490, thus defining comb-like fingers 499 through which mustache hair may pass and be trimmed by the razor sharp edge 17 of blade 16 when the trimming accessory is in use. As with guard cage 460, the width and number of slots and fingers 494 and 499 may be varied as desired to enable the hair of the mustache to flow easily through the slots while maintaining an even height of cut, which may require a few passes to achieve.
In operation, a substantially rigid, hard plastic trimming guard cage 490 is installed onto head 501 of mustache shaving device 500 by sliding the trimming guard cage 490 onto the head. The trimming guard cage 490 can be slidably inserted into any one set of the grooves 508, 509 of the head 501. Each groove set 508,509 positions the lower portion 580, and more particularly the lowermost portion 411 of trimming guard cage 490 a specified distance away from the sharpened edge 17 of blade 16 when the wedges 497 and 498 of trimming accessory 490 are engaged therein. For example, if the user wishes to have a shorter mustache (i.e., trim away more of the existing mustache hair), the user could slide the structure 490 onto the topmost or A groove set (508A and 509A) furthest away from blade edge 17. In this position, the lowermost portion of the trimming guard cage 490 is preferably in the range of 2 mm to 3 mm from the blade. If the user desires a longer mustache, this may be achieved by slidably removing the trimming accessory 490 from the topmost groove set and sliding the structure 490 onto a lower groove set, i.e., the B set (508B, 509B) or the C set (508C, 509C) or the D set (508D, 509D). Thus, the user can position the lowermost portion 411 of the structure 490 closer to or further from the sharpened edge 17 of blade 16, as desired.
In an alternative embodiment, the structure 490 can be made of a more flexible plastic material, such as thin polystyrene or polypropylene, to make the legs 492 and 493 more flexible. This allows the user to push-click the structure 490 over the spacers 512 and 513 and then push-click over each corresponding groove set 508 and 509 until the desired cutting height is achieved. Similarly, by firmly grasping the structure 490 and pulling downwardly, the user can pull-click the structure so the lowermost portion 411 is adjusted further away from the edge 17 of blade 16 in incremental steps. Further, guard 490 may also be tilted laterally to allow the users mustache hair to be trimmed to any length in between the push-click settings. Thus, trimming guard 490 is well suited to further assist the user in trimming his mustache to any desired length required by the user's mustache style using my shaving devices. In addition, if left on the head portion of the shaving device, guard 490 acts as a safety cover for the razor sharp edge of the shaving device when the device is not in use. If desired, the front end of chamber 465 in FIG. 35 and of chamber 495 in FIG. 36 may be closed, at least at the bottom thereof, to further restrict access to the front corner of the blade 16.
FIG. 37 shows a combined cover guard and trimming accessory 530 of the present invention designed to fit on the head portion 11 of my mustache shaving devices 10 having any one of the aforementioned grip tab portions 12. Trimming guard or cage 530 is symmetrical about its longitudinal vertical plane. Cage 530 is designed to enable mustache hair to be trimmed like guard cage 490, but is designed so that blade edge 17 cannot contact or be inadvertently dulled by the fingers.
FIG. 37A shows that the accessory guard structure 530 has an elongated generally hollow body with an elongated chamber 535. An elongated groove 536 is provided in chamber 537 for receiving the lower portion of blade 16. A series of wedge-like slots 534 are provided in the lower half of structure 530, thus defining comb-like fingers 535 through which mustache hair may pass and be trimmed by razor edge 17 of blade 16 when trimming accessory 530 is in use. As with the guard cages described above, the width and number of slots and fingers 534 and 535 may be varied. Further, the length of the fingers 535 can be manufactured to achieve any spacing distance 538 desired. I believe this distance is best kept in the range of 3.5 mm to 8 mm. Structure 530 slidingly engages the cutter portion 11 of the shaving device 10 resting on lower face 540 of upper portion 530. Sides 542 and 543 of structure 530 frictionally contact corresponding left and right sides 503 and 504 of cutter portion 11. As shown in FIG. 37C, structure 530 may be symmetrical about its elongated vertical plane. Alternatively, it may be made asymmetrically (not shown) as in the FIG. 35B cage so that different cutting heights may more easily be achieved.
FIG. 38 shows a one-piece plastic foldable carrying case of the present invention especially designed for transporting and storing any one of my mustache shaving devices. Case 600 has two symmetrical halves 602 and 604 attached by a flexible ribbon 606 of thinner plastic material, which forms a living hinge that flexes to allow the halves to close together to form an enclosed hollow shell which encapsulates pocket 611. Pocket 611 is slightly larger than and is shaped to snugly receive a standard shaving device 10. If desired, pocket 611 may be provided with an adjoining deeper and wider pocket area 608 to accommodate an accessory such as a cage guard or cover installed on the shaving device 10 that is also to be stored. Shell 602 has registration pins 612P while the corresponding shell 604 has registration holes 612H for receiving pins 612P. FIG. 38B shows a side view of the case 600 in its open position illustrating the symmetry between 602 and 604 attached by living hinge 606. These Figures help further illustrate the case 600 is also inexpensive to manufacture.
In operation, the user inserts the shaving device (not shown) into the pocket 611, or if an accessory 560 is used (also not shown), it will be inserted first on the shaving device 10 and then both pieces inserted into the shell 602 or 604 to lay in respective half pocket 608 or 610. The user then bends hinge 606 so that symmetrical halves 602 and 604 come together to mate pins 612P and mating holes 612H and close the unit. FIG. 38C shows that, when closed, the unit is in a compact carrying case that is both easy to handle.
FIG. 39 is another form of a carrying case 622 housing a typical shaving device 10. As shown in FIG. 39B, carrying case 622 is formed from a pre-cut shaped thin-walled sheet of flexible material, preferably a flexible plastic such as polyvinyl chloride or polyethylene. The preformed sheet is folded in half along line 634 and sewn or bonded (such as by heat sealing or adhesive) along the outer perimeter sections 636 and 638 so as to form a pocket 614 to receive a shaving device 10. Snap structure 624 has a male portion 632 and a female portion 633 permanently attached to their respective half-sheets which snappingly engage together, thus closing off a portion of pocket 614, trapping shaving device 10 within pocket 614. As shown in FIG. 39C, when the male portion 632 is inserted into female portion 633 of this repeatedly re-usable snap lock, the opening of pocket 614 is effectively about the size of the hand grip portion 12 and the cutter portion 11 cannot be removed until the snap 624 is opened again. An advantage of this type of a carrying case is that the user can grab the rear portion 640 of the end grip tab 12, undo snap 624, and proceed to remove the cutter shaving device 10. This type of design is both easy and cost effective to manufacture and accommodates both the shaving device by itself and the shaving device with an accessory attached to its blade-carrying head portion.
FIG. 40 illustrates a combined storage, transport and display case and scheme for efficiently and safely packaging multiple identical mustache shaving devices of the present invention, along with an accessory. Case 700 presents one of the devices in a horizontal position where it can be easily seen by a prospective purchaser of this display kit. Case 700 includes a vacuum-formed light-weight thin base 701 of substantially rectangular configuration with rounded corners. Base 701 has a lower external portion 702 and an upper external portion 703 separated by and defining a horizontal external shoulder 704. This style of case is mostly hollow and can be made out of very thin sheet of plastic material such as polypropylene or polyethylene. Further, packaging case 700 includes a complementary lid 705 conforming to the shape of the top exterior portion 703 of base 701, so that its lower lip 706 will rest upon shoulder 704, thus forming a complete enclosure. Lid 705 is preferably vacuum-formed and made out of any suitable transparent plastic material such as a very thin acrylic or PET sheet.
Base 701 is formed with four cavities 714 conforming to the overall shape and size of a prototypical shaving device 10, as shown best in FIGS. 40C and 40D. Case 701 has one shallower cavity 716 formed in the inner flat top surface 709 of case 701. Each cavity 714 is a thin, narrow elongated pocket formed parallel the transverse or minor axis of case 700. Each cavity 714 is just slightly deeper than the lower half of a typical shaving device 10, and is just slightly wider than and conforms to varying width of a typical shaving device 10. As shown in side view in FIG. 40C and FIG. 40D, the cavity 714 has the same overall shape as the exterior of a typical shaving device 10, thereby allowing the device 10 to be inserted while in a vertical orientation into the elongated slot 714. Recess 718 is provided in each of the elongated slots 714 so the user can grab a particular shaving device 10 and remove it from the case 700. Recesses 718 may be in the form of a truncated hemisphere or any other suitable shape into which opposed fingertips of a user may be placed in order to easily grip and pull out the device 10 from its slot 714.
In order to more effectively package the mustache shaving devices 10, the slots 714 and recessed holes 718 are preferably arranged in an alternating pattern as shown in FIG. 40A. Thus, the shaving devices 10 are inserted in alternating fashion, one positioned with the grip-tab portion 12 nearest in one side, the adjacent shaving device flipped around so the grip-tab portion 12 is rotated 180 degrees in the package, and is nearest the opposite side.
Cavity 716 is a larger shallower pocket designed to fully receive a typical shaving device 10 when the device is laid-down in a horizontal orientation as shown in FIG. 40A. Recess 720 in cavity 716 may be a truncated hemisphere, and is preferably included in the pocket 716 to provide the user with fingertip access to the shaving device, so it is easy to pick up. As shown in FIG. 40B, when the lid 705 is placed on base portion 701, the overall package is modular and forms a complete sales, transport and user storage unit for multiple shaving devices and one accessory or cover which fits over the head portion 11 of the shaving device 10. By making the base 701 and lid 705 larger, shaving devices 10 or accessories 530 or other types of covers or accessories additional accessories can be added to the case 700 as desired.
The base 701 and lid 705 of this type of enclosure or case 700 may be mass-produced using conventional vacuum forming techniques. Those in the art will appreciate that the design of my case 700 is thus very practical for my small shaving devices and one or more of their accessories, because it provides a modular way to package several of the inexpensive products in an efficient manner, and because cavity 716 is large enough to accommodate both a mustache shaver and a cover or a head-mounted accessory such as guard cage 530. The FIG. 40 packaging arrangement thereby allows the user to only purchase one cover or guard cage as part of the package of shaving devices within the case, and he will have it to use with subsequent replacement mustache shaving devices provided in the vertical recesses 714.
FIGS. 41-43 show in three views a thirty-fourth embodiment of the present invention, which is a mustache shaving and shaping device shown generally at 800. The device 800 includes an elongated, flattened body 802 having a front head portion 804 and an integral rear fingertip grip portion 806. In similar manner relative to certain other previous embodiments, the elongated, flattened body 802 is configured such that the head portion 804 and the integral fingertip grip portion 806 are substantially formed in a planar in-line configuration and generally have non-sharp rounded edges. The head portion 804 includes a rounded top surface and a blade portion 808, formed in the lower region of the head portion 804. The blade portion 808 includes a razor-sharp blade edge 810, and corners 812 and 814 may preferably include blunting to help prevent nicks or scratches to the skin during use.
This version of mustache shaving device 800 includes a pair of guard half sections 820L and 820R for assisting gripping of the device 800 by hand. The guard half sections 820L and 820R, which are preferably plastic but may also be metal are preferably configured to an overall shape that roughly matches, or is slightly smaller than, the elongated flattened body 802 of the device 800. In the latter configuration, as seen in FIG. 41, a portion, such as the perimeter, of the elongated, flattened body 802 extends beyond the plastic guard half sections 820L and 820R when these components are assembled. The guard half sections 820L and 820R preferably are shaped generally as mirror images of one another. They are secured to the elongated, flattened body 802 through any suitable attaching means such as an adhesive (not shown) or the interlocking pin and socket arrangement shown in FIGS. 42 and 43. Specifically, the plastic guard half section 820L includes integral pins 822 which are sized to pass through openings 824 in body 802 and lockingly engage the holes or sockets 826 in the opposing plastic guard half section 820R. As shown in FIG. 43, assembly of the body 802 and the plastic guard half sections 820L and 820R preferably involves the insertion of the integral pins 822 through the holes or sockets 826 such that a substantially flush surface is formed by the external surface of the integral pins 822 and the external surface of guard half section 820R. Of course, it will be appreciated that a reverse arrangement may also be used, and any other suitable attachment means may also be used.
The plastic guard half sections 820L and 820R preferably include inclined surfaces 828 and 830, respectively, so that the half sections 820L and 820R taper inwardly toward the blade portion 802. This arrangement is suitable for minimizing nicks and scrapes by these plastic half sections against the skin. It will also be appreciated, that the inclined surfaces 828 and 830 may be aligned with the inclination of the razor sharp blade edge 810 so as to form a working plane for shaving. This type of configuration is also shown in the next embodiment.
FIGS. 44-47 show a thirty-fifth embodiment of the mustache shaping and trimming device of the present invention, generally at 850. In similar manner as before, this version of device 850 includes an elongated, flattened generally planar body 852 which includes a cutter head portion 854 and an integral rear fingertip grip portion 856. In this embodiment, integral fingertip grip portion 856 includes a pair of opposed roughened gripping surfaces shown by cross-hatched lines 858 for enhancing the user's finger upon grip and tactile feel of the rear portion 856. Opposed gripping surfaces 858 may be formed by bonding thin rubberized pads to the rear portion 856. In a similar manner as before, the head portion 854 includes an integrally formed blade portion 860 having a razor sharp blade edge 862. Optionally, also as before, the corners 864 and 866 of the blade portion 860 may be blunted to reduce the possibility of nicks while shaving.
In this embodiment, the device 850 includes a front guard 868 that is constructed from a single piece of material, preferably stiff but bendable thermoplastic. The front guard 868 includes a living hinge 870 along its central longitudinal axis, which is accomplished by a thinning of material in this area, as best seen in FIG. 47, between two generally symmetrical half-sections. In similar manner as before, integral pins 872 are disposed along one interior surface of the front guard 868. The pins 872 are configured and disposed so that folding guard 868 along its living hinge 870 upon the head portion 854 from above will allow the integral pins 872 to become aligned with thru-holes or openings 874 in the head portion 854, and the complementarily-sized holes or sockets 876 in the opposite side of the front guard 868. Thus, the front guard 868 can be folded upon the head portion 854 and lockingly snapped into an assembled configuration as shown in FIG. 45.
In this embodiment, the front guard 868 also includes inclined surfaces 878 and 880 to allow the front guard 868 to be smoothly run against and over the skin during shaving. As shown in FIG. 45, in this embodiment the inclined surfaces 878 and 880 are preferably configured to coincide substantially with the inclination of the blade portion 860 so as to form working planes 882 and 884 for the shaving of hairs. The angle 883 of inclination can be any suitable angle and is preferably in the 10.degree. to 35.degree. range, and most preferably is in the range of about 15.degree. to about 25.degree. degrees.
FIGS. 48-51 show a thirty-sixth embodiment of the mustache shaving and trimming device of the present invention, generally at 900. In similar manner as before, this version of device 900 includes an elongated, flattened generally planar body 902 which includes a front head portion 904 and an integral rear fingertip grip portion 906. Also in similar manner as before, the head portion 904 includes an integrally formed blade portion 908 having a razor sharp blade edge 910. The corners of the blade portion 908, such as 912, may again optionally be blunted to reduce the chance of nicks while shaving.
In this embodiment, the device 900 includes a front guard 918 that is constructed from a single piece of material, preferably thermoplastic such as high-density polyethylene ("HDPE"), polyethylene terephthalate ("PETE"), polypropylene ("PP"), or any other suitable plastic. The front guard 918 includes a living hinge 920 along its central longitudinal axis, which is formed such as by a thinning of the material in this area, as best shown in FIGS. 49 and 51. In similar manner as before, integral pins 922 are disposed along one interior surface of the front guard 918. The integral pins 922 are configured and disposed so that a folding of the front guard 918 along the living hinge 920 upon the head portion 904 will allow pins 922 to pass through openings 924 within head portion 904, and be press-fit or otherwise interlockingly engaged with holes 926 in the opposite side of the front guard 918. Thus, the front guard 918 can be folded upon the head portion 904 and readily snapped into an assembled configuration as shown in FIG. 49.
The front guard 918 also includes smooth inclined surfaces 928 and 930 for placing the fingers 936 and 938 of the front guard 918 closer to the blade edge. This also helps a user to more easily see and determine the precise position of the blade edge 910 during shaving or trimming. Likewise, elevated surfaces 932 and 934 of the front guard 918 are inclined to decrease the space between the front guard 918 and the blade portion 908. The front guard 918 is formed with spaced sets of fingers 936 and 938 to help shield the blade edge 910 from being pressed too hard into the skin during shaving. Hairs to be shaved are cut by the blade edge 910 in this arrangement, most often when they are firmly contacted by the exposed blade edge portions between the fingers 936 and 938. Although fingers 936 and 938 are shown in FIG. 49 to be of a length slightly shorter than the extension of the blade portion 908, the length of the fingers 936 and 938 may vary relative to the extension or length of the blade portion 908 as may be desired for effective shaving. For example, as shown in FIG. 48, the fingers may extend slightly farther than the blade edge 910. Also, the tips of finger portions 936 and 938 preferably have gently rounded edges to help eliminate skin scratches which might occur with sharp plastic edges.
FIGS. 52-55 show a thirty-seventh embodiment of the mustache shaving and trimming device 950 of the present invention. In similar manner as before, this version of device 950 includes an elongated, flattened planar body 952 which includes a front head portion 954 and an integral rear fingertip grip portion 956. An optional grip cover 957, of any suitable material such as molded rubber or plastic, is shown to be disposed over the fingertip grip portion 956 to facilitate gripping of the device. The grip cover may be configured as required for use with any of my embodiments herein. Also in similar manner as before, the head portion 954 includes an integrally formed blade portion 958 having a razor sharp blade edge 960. The corners 962 and 964 of the blade portion 958 may again optionally be blunted as shown, such to reduce the likelihood of nicks while shaving.
The device 950 preferably includes a front guard 968 that is again constructed from a single piece of material, preferably thermoplastic material, such as PETE or PP. Front guard 968 is disposed in a folded manner upon the head portion 954 from the direction of the blade portion 958, instead of over the opposite or top edge of the head portion 954 as in previous embodiments. Thus, this version of front guard 968 is operable to shield the blade edge 960 at least in part from direct contact with the skin. For clarity, the views in FIGS. 52 and 53 show the device 950 in an orientation 180 degrees from that shown in previous comparative figures, with the blade edge 960 disposed upwardly.
The front guard 968 preferably includes a living hinge 970 along its central longitudinal axis, which is formed such as by a thinning of the material in this area, as before, and it may even have a very thin central seam as shown. In similar manner as before, integral pins 972 are disposed along one interior surface of the front guard 968. The integral pins 972 are configured and disposed so that placement of the front guard 968 upon the head portion 954 in a folded manner over the blade portion 958 and along the living hinge 970 will allow the integral pins 972 to become aligned with and pass through openings 974 within the head portion 954, to enter and interlockingly engage complementary mating sockets 976 in the opposite half-section of the front guard 968. Thus, this version of the front guard 968 can be easily folded upon the head portion 954 and readily snapped into an assembled configuration as shown in FIG. 52.
The front guard 968 also includes inclined surfaces 978 and 980 for helping reduce visual obstruction of the working areas of razor-sharp blade edge 960 while in use. The rounded exterior profile of living hinge 970 helps reduce scratches due to pushing or scraping of the edge of the front guard 968 opposite the blade portion 958 against the skin. In this embodiment, the portion of the front guard 968 that is folded over the blade portion 958, centered upon the living hinge 970, is preferably shaped into a V-shape, to correspond generally to the shape of the blade edge 960. A series of transverse slots 982 are provided in this portion of the front guard 968 that is folded over the blade edge 960, thus defining loop-like fingers 984 through which mustache hair may pass and be trimmed by the blade edge 960 when the device 950 is in use. The width and number of slots and fingers 982 and 984 may be varied as desired to enable the hair of the mustache to flow easily through the slots while maintaining an even cut. For example, three to ten slots may be provided for a razor blade about one inch (25 mm) long, with five to seven slots being most preferred. FIG. 52 shows a guard 968 with six slots, and FIG. 24 shows a front guard 968' in ten slots. As shown in both these figures, the slots are at least as wide as the fingers 84, so that fifty percent or more of the sharpened blade edge 960 is exposed, with preferably 60 to 80 percent of the blade edge being exposed.
FIGS. 56 and 57 show a thirty-eighth embodiment of the mustache shaving device of the present invention, generally at 1000. The device 1000 includes an elongated, generally flattened frame or body 1002, which includes a cutter head portion 1004 and an integral rear fingertip grip portion 1006, all in similar manner and size as before. (It should be appreciated that the integral fingertip grip portions shown among the various embodiments may be substituted as desired among any of the embodiments described herein.) In this arrangement of my invention, however, the shaving ability of the device is accomplished through the use of twin dual razor-blade strip structures mounted to a centrally located specially configured front frame portion 1008 of the head portion 1004. This central frame 1008 is configured to accept the engagement of dual razor-blade strip structures 1010 and 1012, mounted upon either side. It should be appreciated that only one blade cartridge structure may also be mounted upon the central frame 1008 on one side, thereby creating a single-sided shaving device. In the arrangement shown in FIGS. 56 and 57, however, a two-sided shaving device is shown.
FIG. 57 shows device 1000 from a partially exploded end cross-sectional view. The blade strip structures 1010 and 1012 each include a perimeter guard portion 1014 and 1016. The guard portions 1014 and 1016 are each specially configured to engage the central frame 1008 and to receive and hold in place the various other components making up the blade strip structures 1010 and 1012. The blade strip structures 1010 and 1012 are each shown to be double-bladed structures, having elongated very thin flat metal alloy blade strips 1018, 1020, 1022 and 1024, which each have a razor-sharp elongated edge. Side guard portions 1026 and 1028 are also integrally provided as side supports on the perimeter guard portions 1014 and 1016. The side members 1026 and 1028 also provide a further function relative to the blade strips 1018, 1020, 1022 and 1024, in that they help define the working planes for the razor blade strips.
The blade strip structures 1010 and 1012 can be made as removable cartridges if desired. Structures 1010 and 1012 are preferably engaged with the central extension 1008 by any suitable fastening means, including but not limited to such as through the use of pins 1030, 1032, 1034 and 1036 which are receivable within sockets 1038, 1040, 1042 and 1044 in the central extension 1008. The pins 1030, 1032, 1034 and 1036, pass through apertures 1046, 1048, 1050, 1052, 1054, and 1056 formed within the blades 1018, 1020, 1022 and 1024 for retaining these blade strips in place. As can be seen in FIG. 57, in this particular arrangement, the upper blade strips 1018 and 1022 each include two such apertures while the lower blades 1020 and 1024 each include only a single aperture. Plastic or mica spacers 1058 and 1060 are also provided to separate the upper and lower blade strips within each blade strip structure by a specified, predetermined suitable distance. The spacers 1058 and 1060 include apertures 1062 and 1064 for accommodating the insertion of pins 1032 and 1036. In this arrangement, it can be seen that the lowermost pins 1032 and 1036 are operable for securing the upper blades 1018 and 1022, the spacers 1058 and 1060, and the lower blades 1020 and 1024.
When the components of the blade cartridge structures 1010 and 1012 are in an assembled form, such as at the lefthand portion of FIG. 57, the blade edges 1066, 1068, 1070 and 1072 are configured in a substantially planar arrangement substantially tangent to the rounded lower portion of the central extension 1008 and the surfaces of the lubricant strips 1074 and 1076 that are applied to the guard portions 1014 and 1016. This planar arrangement, sometimes called a working plane, is believed advantageous for shaving.
Referring now to FIG. 58, there is shown a thirty-ninth embodiment of the mustache shaping and trimming device of the present invention, generally at 1100. The device 1100 is substantially similar in its overall construction to the embodiment previously described. In FIG. 58, however, the device 1100 is shown to include oppositely disposed blade strip structures 1110 and 1112 that are each of a single-blade strip design. As shown in FIG. 58, a single blade 1118 is visible in the blade structure 1112, which may be constructed as a removable, replaceable cartridge if desired.
Referring now to FIG. 59, there is shown a fortieth embodiment of the mustache shaping and trimming device of the present invention, generally at 1150. Again, the overall configuration of the device 1150 is substantially similar to the previous two embodiments. In this embodiment, however, blade structures 1160 and 1162 are again provided in an oppositely disposed relation, this time in a double-bladed structure, as in FIGS. 56 and 57. Accordingly, blade strips 1168 and 1170 are visible as part of the blade cartridge structure 1162. As an additional feature, however, the device 1150 includes a wire guard means 1175, which may preferably be a series of turns of a thin metallic wire wrapped sequentially at spaced intervals about the blade cartridge structures 1160 and 1162. Thus, the wire guard structure 1175 provides an additional means for safe guarding the sharpened edges of blade strips, such as 1168 and 1170, against harmful direct cutting contact with the skin during shaving.
Epilogue
The term "razor-sharp blade" or "razor blade strip" as used herein, including in the claims, encompasses any elongated blade of appropriate size having a suitably sharpened edge, no matter how constructed. Thus, this term covers blade strips made of a single piece of metal or other sharpened or sharpenable material. It also covers razor blade strips made by bonding a thin gauge strip of metal to a more rigid piece of metal, by laser spot welding or any other technique.
Those skilled in the field will appreciate that the foregoing illustrated and discussed embodiments of the mustache shaving devices of the present invention are subject to modification and change without departing from the scope of the invention as recited in the claims below. Needless to say, the overall size, proportion, materials, weight and clearances of the various components used in the razor-holding portions, the fingertip pinch grip tab portions, and connection mechanisms for attaching the blade strip to the body of the mustache shaving devices of the present invention can be varied as needed or desired. A number of other possible modifications have already been described above. Further changes are clearly possible, as will now be discussed first in the following examples.
(1) Different features and aspects of one embodiment may be combined with another embodiment to provide a mustache shaving device or system with the desired features from both. (2) The lubricant strip used in the above description in FIG. 25 may also be built into the razor head structure through impregnation or molding, rather than being a separate strip glued on to the razor's cap. In other words, a solid shaving aid strip may be provided as an integral portion of the cap or other structural member in any form that is substantially immovable. (3) A smoothly finished glide strip or surface which does not dissolve with use may be used in place of a dissolving lubricant strip material. The glide surface can be made of the same plastic material as the rest of the head, but provided with a very smooth micro-finish. Alternatively any suitably smooth or slippery material may be used as a glide strip by being integrally molded, bonded or mechanically fastened to the blade-supporting structure of the mustache shaving device. The glide strip may be made of polytetrafluoroethylene (PTFE), or of molded plastic, or may be coated, using vapor deposition techniques or other suitable methods, so as to form a smooth, slippery, relatively wear-resistant and substantially inert layer. Such a layer could be gold, silver, chrome or any other metal suitable for contact with human skin, or a non-toxic glassy material such as silicon oxide or the like. (4) Any type of conventional or suitable pin or post arrangement, beyond those already disclosed herein, may be utilized to retain the elongated blade strip within the mustache shaving structures of the present invention. (5) Most of my mustache shaving devices disclosed above may be constructed with a detachable, replaceable cartridge-style razor blade-supporting portion, so that fingertip grip portion may be reused multiple times. (6) The blade strip within a number of my assembled shaving devices of the present may be made to be individually movable and spring-loaded within the channel in the head or cutter end portion by spring-loading them in the manner similar to that shown and/or described in connection with the FIG. 34.
Those in the art should appreciate that my mustache shaving devices and accessories, including the trimming cages, can be profitably used for other facial hair shaving applications, such as precision-shaving and trimming of sideburns, short beards and goatees, and even eyebrows. Those in the art should realize also that my shaving devices and accessories claimed below can also be used for selected pet grooming applications.
Thus, it is to be understood that the devices, accessories and cases of the present invention are by no means limited to the particular constructions herein disclosed and/or shown in the drawings. Instead, the present invention also encompasses any modifications or equivalents that are fairly covered by the claims set forth below.

Number	Name	Date
D159994	Lee	Sep 1950
1890334	Muros	Dec 1932
2633635	North	Apr 1953
2866984	Plough	Jan 1959
3109237	Girouard	Nov 1963
3229366	Strezoff	Jan 1966
3263330	Ferrara	Aug 1966
3488764	Welsh	Jan 1970
3555682	Laszlo	Jan 1971
3557448	Shead	Jan 1971
3574936	Bullerman	Apr 1971
4037322	Bresler	Jul 1977
4344226	Blake, III	Aug 1982
4514903	Pope	May 1985
4663841	Custer	May 1987
4782590	Pope	Nov 1988
4928716	Greene	May 1990
4961262	Lawrence	Oct 1990
5012576	Johannesson	May 1991
5161307	Althaus	Nov 1992
5220728	Ueno et al.	Jun 1993
5479950	Andrews	Jan 1996
5673711	Andrews	Oct 1997

	Number	Date
Parent	944603	Oct 1997
Parent	515832	Aug 1995
Parent	319149	Oct 1994

Mini-shaving device for grooming facial hair

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Abstract

Description

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CROSS-REFERENCE TO RELATED APPLICATIONS

US Referenced Citations (23)

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Continuation in Parts (3)