Mid-level handle for floor care device and method of using handle

Information

  • Patent Grant
  • 6446304
  • Patent Number
    6,446,304
  • Date Filed
    Friday, September 29, 2000
    24 years ago
  • Date Issued
    Tuesday, September 10, 2002
    22 years ago
Abstract
Floor care devices having an elongated handle or body portion for control thereof are provided with mid-level handles for facilitating manipulation of the devices in certain conditions, for storing power cords, for hanging and storing the floor care device and the like. The mid-level handle may fold from a retracted position adjacent the elongated handle or body portion to an extended position. A retainer is provided to maintain the handle in its retracted and extended positions.
Description




TECHNICAL FIELD




The present invention relates to mid-level handles suitable for use with floor care devices such as, for example, an upright vacuum cleaner.




BACKGROUND OF THE INVENTION




Vacuum cleaners and other power floor care devices, such as floor buffers, carpet shampooers, steam cleaners, power sweepers and buffers are common and well-established appliances for commercial and residential floor care. Such devices commonly include a power cord that attaches to the grip at the end of the handle at which point a user holds the device to use it.




A wide variety of floor care device configurations, in general, and vacuum cleaner configurations, in particular, are available to suit the needs of a particular application or user, including upright vacuums, canister models, and hand-held models.




Vacuum cleaners, such as upright vacuums, remove dirt from a carpet by creating a suction strong enough to draw the dirt particles and other contaminants from a section of the carpet up into the vacuum cleaner where the dirty air is passed through a vacuum bag in which the entrained dirt is captured. To increase the efficiency of this process, a base portion of the vacuum cleaner often has a roller brush for agitating dirt from the carpet as it is being vacuumed.




Inside the vacuum cleaner, a conduit transfers the dirty air from the base of the vacuum cleaner to the vacuum bag. The dirty air conduit runs up a handle assembly or, in cases where the dirty air conduit is rigid, the dirty air conduit can itself function as a portion of the handle. At the end of the dirty air conduit opposite the floor there is a duct from which the dirty air exits from the dirty air conduit. The vacuum bag is attached to the dirty air outlet nozzle and receives and filters the dirty air which it receives from the duct.




The vacuum bag has a bag opening that fits closely over the dirty air outlet duct. The vacuum bag is otherwise a completely closed bag that is made from a porous material, such as porous paper, that allows air to flow through it, but which is too fine for most dirt particles to pass through. As dirty air passes through the vacuum bag, the air is forced through the porous material and the dirt is trapped in the bag. The bag thus collects the dirt from the dirty air and, more importantly, from the floor. Because the material of the vacuum bag is often fragile and can get very dusty, the vacuum bag is commonly held within a protective outer bag.




One common vacuum bag design incorporates a reinforced area, known as a collar, surrounding the bag opening. The collar is usually a square or rectangular piece of thin cardboard. To install the vacuum bag, the user holds the collar by one or more edges, and forces the bag opening over the dirty air outlet nozzle. The collar can be designed with an elastic seal extending inward from the circumference of the bag opening to further seal the gap between the dirty air outlet duct and the bag opening.




As shown in

FIG. 1

, a prior-art upright vacuum cleaner


20


may comprise a head


22


, which includes a motor and fan which cooperate to create suction at floor level. Air sucked into the head


22


by the fan is blown into the dirty air conduit


24


that forms a part of the handle


26


of the vacuum cleaner. Upon reaching the end of the dirty air conduit


24


, the air stream with its entrained particulates (the dirty air) is directed through the dirty air exhaust duct


28


into a flexible vacuum cleaner bag


30


, which is mounted in a generally air-tight manner to the exhaust duct


28


.





FIG. 1

also provides an exploded view of a prior-art dirty air exhaust duct


28


docking system


32


for receiving air from a dirty air conduit and diverting it laterally into a vacuum cleaner bag


30


. The docking system


32


comprises a yoke


34


which may be mounted about the periphery of the exhaust duct


28


. The exhaust duct


28


includes a flange (not shown) about its periphery for retaining the yoke


34


in place.




The yoke


34


is hinged to a bag dock


36


into which the mounting collar


38


of the bag


30


may be inserted. The yoke


34


and bag dock


36


are made of a somewhat rigid plastic material and snap together when they are pivoted relative to one another from the open position (shown in

FIG. 1

) to a closed position.




A mounting collar


38


is mounted on the vacuum cleaner bag


30


. This collar is configured to slide into guides on the bag dock


36


. The mounting collar


38


includes a flexible seal


40


which covers a portion of the aperture


42


which extends through the mounting collar


38


and opens into the interior of the bag


30


. The collar


38


is made of three layers of cardboard or the like, the middle layer being slidable with respect to the front and back layers. The tab


44


forms a lower portion of the middle layer of the collar


44


, and may be pulled downward relative to the collar


38


to slide the middle layer to a position where the aperture


42


is covered. In this position, the particulate material in the vacuum cleaner bag


30


is sealed therein.




When the bag dock


36


is pivoted to its closed position relative to the yoke


34


, the aperture


42


and the seal


40


are positioned about the periphery of the exhaust duct


28


in sealing engagement therewith. The exhaust duct


28


is then in communication with the interior of the vacuum cleaner bag.




In prior art upright vacuum cleaners, such as that shown in

FIG. 1

, the dirty air conduit


24


generally is closed off adjacent to the dirty air exhaust duct


28


to which the vacuum bag is attached. This exhaust duct generally extends at right angles from the upper end of the dirty air conduit a sufficient distance so that the vacuum cleaner bag, and, as applicable, an outer bag made of cloth or the like, can be mounted on it, with the open mouth of the duct exhausting the dirty air into the bag.




While such a vacuum cleaner functions adequately, there remain certain problems with the design. A common complaint relating to this and other vacuum cleaners is that they are very noisy. One component of this noise is believed to be caused by turbulence generated as the rapidly-flowing dirty air reaches the upper, sealed end of the dirty air conduit and flows laterally out the dirty air duct.




Another difficulty of the present design is rebounding of larger, heavier objects, such as coins, after impact with the sealed end of the conduit. Since the sealed end of the dirty air conduit is generally perpendicular to the direction of flow of the air up the conduit, such objects may bounce back down the conduit (against the air flow) only to be blown back into the end of the conduit and rebound again. Eventually, the object may be blown into the bag, ending this cycle of rebounding, but the noise of the impacts of such objects into the sealed end of the conduit can be disconcerting to users of the vacuum cleaner.




The design also results in loss of vacuum cleaner efficiency. The abrupt change in airflow direction and the turbulence generated in the course of such change of direction result in greater backpressure in the conduit, which results in a reduction in cleaning ability of the vacuum cleaner.




SUMMARY OF THE INVENTION




The present invention is directed to a mid-level handle for floor care devices, and is applicable to a variety of such devices, including upright vacuum cleaners. The mid-level handle may be positionable between extended and retracted positions. In the extended position, the handle may permit easier gripping and manipulating of the device at levels elevated above the level at which the operator is standing, may be adapted provide for convenient storage of the power cord, and may provide a convenient means for carrying and hanging the floor care device. The handle may be retractable to permit the handle of the device to be lowered for access under low-clearance obstacles.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a partial exploded view of an upright vacuum cleaner in accordance with the prior art.





FIG. 2

is a side elevation of an upright vacuum cleaner having a dirty air exhaust duct according to one embodiment of the present invention.





FIG. 3

is an exploded isometric view of the upper portion of the upright vacuum cleaner of FIG.


2


.





FIG. 4

is an exploded isometric view of a dirty air exhaust duct according to one embodiment of the present invention with associated components.





FIG. 5

is an isometric view of a vacuum cleaner according to one embodiment with the power cord stowed on the handles thereof.











DETAILED DESCRIPTION OF THE INVENTION




The present invention is directed to a mid-level handle for a floor care device such as an upright vacuum cleaner. As the principles and benefits of the present invention can be described in connection with an upright vacuum cleaner in a manner that will enable those skilled in the art to apply it to other floor care devices, the invention will be explained in connection with embodiments involving an upright vacuum cleaner. From such embodiments, those skilled in the art will easily perceive ways in which the invention may be applied to floor care devices such as floor buffers, carpet shampooers, steam cleaners, power sweepers and buffers.





FIG. 2

shows a vacuum cleaner


100


according to one embodiment of the invention. In like manner to the prior art vacuum cleaner


20


of

FIG. 1

, the present vacuum cleaner


100


includes a head


102


that contains the vacuum motor and fan, a rotary brush, and other such components (not shown) that are known in the art. An elongated handle


103


is pivotably attached to the head for maneuvering and controlling the head.




The purpose of the head


102


and its components is to provide suction at the level of the floor


104


, which may be a wood floor, or may be covered with carpet, throw rugs, tile, linoleum or other floor coverings. As is well known, the air entrains particulates such as dirt, sand, lint, crumbs and other food particles, and other materials that may be found on a floor,




The particulate-laden air (dirty air) is exhausted from the head


102


via an exhaust conduit


106


, which is pivotably mounted to the head to permit rotation through about 90 degrees from a generally vertical orientation to a generally horizontal orientation as indicated by the arrow


108


. The particulate-laden air is transmitted upward along a dirty air conduit


110


to a dirty air exhaust duct


112


. The dirty air conduit


110


of the present embodiment may be made of any of a variety of materials, such as steel or aluminum tubing, but should be sufficiently stiff to serve both as a conduit and as a portion of the elongated handle


103


of the vacuum cleaner


100


.




A clamp


109


is mounted on the exhaust conduit


106


of the vacuum cleaner


100


by known means such as screws or other fasteners. A spring clip


111


is mounted on the clamp and is adapted to clip into a slot in the bag clamp


113


. The bag clamp


113


is adapted to grip the bottom of a flexible bag case


136


, when the two halves thereof are assembled.




Referring to

FIGS. 2 and 3

, in which like elements have like numbering, the dirty air conduit


110


is maintained in engagement with the exhaust conduit


106


as follows. A slot


114


in the lower end of the dirty air conduit


110


is adapted to receive and be substantially filled by a tab (not shown) on the interior wall of the exhaust conduit


106


. The tab and slot prevent the exhaust conduit


106


and dirty air conduit


110


from rotating relative to one another.




An annular shoulder may be provided in the exhaust conduit


106


to receive the bottom end


116


of the dirty air conduit


110


. Such shoulder preferably has a width approximately equal to that of the wall thickness of the dirty air conduit


110


. The dirty air conduit is held in place by a collar


118


and elastomeric ring


120


. The collar


118


and ring


120


are adapted to slide onto the dirty air conduit


110


and the collar


118


is configured to receive the ring


120


therein.




The collar


118


threadedly engages the upper end of the exhaust conduit


106


and screws down onto it. The elastomeric ring


120


is thereby compressed between a shoulder internal to the collar


118


and the upper end of the exhaust conduit


106


. The compression of the ring forces the ring


120


to expand into tight engagement with the adjacent surface of the dirty air conduit


110


, which retains the dirty air conduit


110


against axial movement out of engagement with the exhaust conduit


106


in normal use.




The lower end


122


of the exhaust duct


112


includes a threaded region


124


and can be mounted to the dirty air conduit


110


in like manner to the mounting of the dirty air conduit


110


to the exhaust conduit


106


. A tab (not shown) on the interior of the exhaust duct


112


is received in a slot


126


in the upper end of the dirty air conduit


110


, substantially filling the slot


126


. A collar


128


and elastomeric ring


130


are slid over the upper end


132


of the dirty air conduit


110


, and the collar is screwed onto the lower end


122


of the exhaust duct


112


, compressing the ring


130


and causing it to frictionally engage the adjacent wall of the dirty air conduit


110


. Of course, in another embodiment the dirty air conduit


110


and exhaust duct


112


could be joined in any of a variety of known manners, such as by using clamps, flanges and fasteners or bonding of one to the other. The dirty air conduit


110


and the exhaust duct


112


could also be formed as a single unit if desired.




As best shown in

FIGS. 3 and 4

, the upper end


132


of the dirty air conduit


110


(

FIG. 3

) is configured to abut a shoulder


134


(

FIG. 4

) which extends around the interior surface of the exhaust duct


112


. The shoulder may preferably have a width equal to the wall thickness of the dirty air conduit


132


to provide the airflow in the conduit with a smooth transition from the dirty air conduit


110


to the exhaust duct


112


to avoid generation of turbulence at the transition point.




As shown in

FIGS. 2 and 3

, the vacuum cleaner


100


is provided with a bag case


136


into which the dirty air may be exhausted from the dirty air exhaust duct


112


. The bag case


136


may be made of a flexible material that is resistant to wearing and ripping, and that is either air pervious or includes vents to allow the escape of air. In another embodiment, the bag case may be a vented, rigid case made of plastic or other such material. The bag case


136


is adapted to be mounted over the mouth section


138


of the dirty air duct


112


. The bag case


136


may be openable with a zipper or other such means, for insertion and removal of vacuum cleaner bags, such as the prior art bag


30


, which may be made of a fibrous material such as porous paper. The bag case


136


is adapted to contain the bag without unduly constricting it.




After the bag case


136


has been positioned over the mouth


138


of the duct


112


, a bag case support


140


(for flexible bag cases


136


) and bag docking system


142


are inserted in the bag and positioned over the mouth


138


of the exhaust duct


112


. The yoke


144


engages the periphery of the mouth


138


firmly to maintain the docking system (and the bag case


136


and bag case support


140


) in place. A mounting collar of a vacuum cleaner bag (not shown) may be inserted into the bag dock


146


, and the bag dock


146


may be pivoted relative to the yoke


144


to position the vacuum cleaner bag in sealing engagement with the mouth


138


of the exhaust duct


112


, as described in connection with the prior art vacuum cleaner of FIG.


1


. The bag case


136


may then be closed.




The upper end


150


of the exhaust duct


112


includes a threaded section


152


. A plurality of vertical slots


154


extend to the upper end of the exhaust duct


112


. The threaded section


152


and the slots


154


cooperate with a collar


156


to form a collet-like connector for receiving and gripping an upper handle segment


158


.




A two-piece handle (or grip)


160


for permitting a user to grip the end of the elongated handle


103


may be mounted to the upper end of the upper handle section


158


by fasteners such as screws. The two halves of the handle


160


may advantageously be made of a thermoplastic material, and may be bonded together by known methods such as vibratory welding or use of adhesives.




A switch may be provided in the handle


160


for controlling the flow of electricity to the motor in the head


102


of the vacuum cleaner


100


. For this purpose, a first power cord


162


adapted to be plugged into a wall outlet may be routed through the handle


160


to the switch, and a second power cord


164


may extend from the switch, through the handle


160


and into the head


102


of the vacuum cleaner


100


to power the vacuum cleaner motor. The lower tip of the handle


161


may be angled upward and outward from the longitudinal axis of the upper handle section


158


, which makes it able to retain a plurality of loops of the power cord


162


thereon, as will be explained below. Alternatively, a hook could be mounted on the handle


160


or handle section


158


to receive loops of a power cord


162


.




Referring to

FIGS. 2

,


3


and


4


, a handle mount


166


extends from the side of the exhaust duct


112


opposite the mouth


138


. The handle mount


166


defines a hemicylindrical channel for receiving a cylindrical portion


168


of the mid-level handle


170


. A handle support clamp


172


adapted to fit around the exhaust duct


112


below the mouth


138


includes a handle mount


174


which defines a hemicylindrical channel corresponding to that defined by the handle mount


166


of the exhaust duct


112


. The clamp


172


is secured in position by a fastener, such as a screw, which extends through an aperture


176


therein. The handle mount


174


is divided into two parts by a slot


178


. A screw inserted in the aperture


176


may thus extend through both halves of the handle mount


174


. When the screw is tightened (e.g., by screwing it into a nut on the opposite side of the handle mount


174


from that on which the head of the screw is located), the opposed faces of the slot


178


may be drawn together, drawing the clamp


172


tightly about the exterior of the exhaust duct


112


.




The handle mount


174


of the clamp


172


is formed such that, when the clamp


172


is mounted on the exhaust duct


112


, it forms a cylindrical channel with the handle mount


166


of the exhaust duct


112


to receive the cylindrical portion


168


of the mid-level handle


170


.




As best shown in

FIG. 4

, a slot


180


is provided in the handle mount


166


. The slot is configured to receive a leaf spring


182


, which bears on a plurality of cam surfaces


184


of the handle


170


when the handle is positioned in the cylindrical channel formed by the handle mounts


166


,


174


. The shoulders


186


adjacent the cam surfaces


184


prevent the leaf spring from moving out of the channel. The leaf spring


182


and cam surfaces


184


cooperate to act as a retainer to maintain the handle either in the extended, generally-horizontal position, in which it extends outward from the exhaust duct


112


, as shown in

FIG. 2

, to a retracted, generally vertical position (not shown) in which the handle


170


is pivoted through an angle


188


downward and against the exhaust duct


112


.




Stops


185


extend from the cylindrical portion


168


of the mid-level handle


170


. When the handle is pivoted to its extended position, the stops


185


engage shoulders


187


on the clamp


172


, preventing the handle from pivoting upward beyond the generally horizontal position.




As shown in

FIG. 4

, the handle


170


includes a broad grip section


190


, which is sufficiently large to allow an operator to insert his or her hand therein. This broad grip section


190


is attached to the cylindrical portion


168


by a narrow neck section


192


. The difference in width between the neck section


192


and grip section


190


is sufficient that the handle


170


, when in its extended position, may receive a plurality of loops of the power cord


162


.




The mid-level handle


170


may advantageously be positioned in, and maintain its position in, the extended and retracted positions. First, as the greatest portion of the mass of the vacuum cleaner


100


is concentrated in the head


102


, the mid-level handle


170


is located above the center of mass of the vacuum cleaner


100


. Thus, in the extended position, the mid-level handle


170


may be used to carry the vacuum cleaner


100


, or may be positioned over a hook on a wall or cart to permit convenient storage or transportation thereof.




The mid-level handle


170


is also useful in its extended position when cleaning surfaces that are located above the level at which a user is standing. By gripping the handle


160


in one hand and the mid-level handle


170


in the other, a user may conveniently manipulate the vacuum cleaner


100


on stairs above the level at which the user is standing and in other locations where manipulating the floor care device solely by the handle


160


may be inconvenient.




Finally, as shown in

FIG. 5

, multiple loops of the power cord


162


may be wrapped about the neck


192


of the extended mid-level handle


170


and around the handle


160


for storage purposes. The broad loop of the grip section


190


of the handle


170


prevents the cord


162


from slipping off the mid-level handle


170


, and the upwardly-oriented tip


161


of the handle


160


likewise serves as a cord retainer to retain the loops of cord


162


on the handle


160


. Of course, in lieu of wrapping the cord


162


about the handle


160


, a hook could be provided at a position adjacent to the handle


160


to serve as an upper cord retainer to receive the cord


162


.




The extended position of the handle provides some drawbacks, however. When vacuuming under furniture, the user may wish to pivot the handle


160


relative to the head


102


of the vacuum cleaner through an angle


108


to a position near to the floor


104


. Having the handle extending outward from the back of the exhaust duct


112


may impair the ability of the user to lower the elongated handle


103


as close to the floor as may be desired. Thus, the ability of the handle


170


of the present embodiment of the invention to be positioned in its retracted position and maintained in that position by the cam spring


182


and cam surfaces


184


will facilitate cleaning in such circumstances.




Similarly, when cleaning behind obstacles, such as low tables, a protruding handle may catch on the obstacles. Again, the ability of the mid-level handle


170


to be positioned and maintained in a retracted position may facilitate the cleaning process.




Of course, those skilled in the art will appreciate that the mid-level handle


170


may have any of a variety of configurations. For example, the handle may be formed in the shape of a “T.” The handle may also be affixed higher or lower on the elongated handle


103


of the device, for example, by using a clamp similar to the clamp


172


which, by itself, is capable of receiving the cylindrical portion


168


of the mid-level handle


170


. Such persons will also appreciate that other means may be provided for maintaining the handle in its extended and retracted positions, such as spring actuated catches, ball detents and the like.




The handle


170


of the present embodiment may advantageously be made of a thermoplastic, thermosetting or other material that has suitable rigidity and strength, and preferably is impact resistant. The handle may be formed by one or more known methods, such as injection molding, casting and machining. Preferably, the injection molding of a thermoplastic material is used. The handle may be molded in multiple pieces that may be bonded together by one or more known methods such as the use of vibratory welding, thermal bonding or solvent or adhesive bonding.




One of the problems of conventional vacuum cleaners that makes their use undesirable is the level of noise they generate. Although this noise is within safety limits for the operator and others who may be nearby, it is still desirable to limit the amount of noise made by vacuum cleaners. This is particularly the case where the vacuum cleaners may be used near others who may be sleeping, who may be ill and in need of rest, or who may have difficulty concentrating or conversing over the noise.




Another problem common to upright vacuum cleaners with dirty air conduits that terminate in an exhaust duct that exhausts the air at approximate right angles to the airflow up the conduit is the problem of rebounding of heavier objects entrained in the airstream as described above. As shown and explained in connection with

FIGS. 3 and 4

, the exhaust duct


112


according to one embodiment of the present invention addresses both of these problems.




The exhaust duct


112


has an inlet of generally circular cross-section at its lower end


122


. The mouth


138


of the exhaust duct


112


, by contrast, has a generally-oval shape. While prior art devices have tended to simply provide a wall such as the wall


194


across the duct to stop further airflow therealong, and provide an outlet of any desired configuration, such exhaust ducts may create turbulence that increases the noise level of the vacuum cleaner and allows for rebounding of heavier objects. The increased turbulence also increases the backpressure in the vacuum cleaner, reducing the suction power thereof.




In the device of the present embodiment, the transition from the upward low in line with the longitudinal axis of the dirty air conduit


110


to the flow of air out of the mouth


138


of the exhaust duct


112


is facilitated by the present invention. As discussed above, the shoulder


134


receives the end of the dirty air conduit


110


and provides a smooth transition for the airflow for the transition from the dirty air conduit


110


into the exhaust duct


112


.




The transition of airflow from vertical to horizontal flow (that is, from flow axial to the dirty air conduit


110


to flow at an approximate right angle thereto out the mouth


138


of the exhaust duct


112


) is smoothed by the contoured upper and lower curving


196


,


198


of the back and front walls


200


,


204


of the interior of the exhaust duct


112


. This differs from prior art devices in which the transition is not smoothly contoured to facilitate the change in flow direction. The lower curving


198


of the front wall


204


of the exhaust duct


112


also is smoothly continuous to minimize turbulence generation during the transition in flow directions.




In the present embodiment, the mouth


138


of the exhaust duct


112


has a generally oval cross-sectional shape, which is different from the generally circular cross section of the lower end


122


of the exhaust duct


112


. To avoid generation of turbulence, the transition from one shape to the other is likewise smoothly contoured, unlike prior art devices that change abruptly or with sharp edges from one shape to another.




In order to prevent the airstream from impinging directly on the surface of the vacuum cleaner bag opposite to the mouth


138


of the exhaust duct, a deflector


206


may be provided at the upper periphery of the mouth


138


of the exhaust duct


112


. Again, the deflector


206


is smoothly contoured to avoid generation of excessive turbulence.




In the preset embodiment, the upper curving


196


extends from the rear interior wall portion


200


to a position


202


which is generally directly above the front wall portion


204


. Thus, a heavy object such as a coin entrained in the airstream of the dirty air conduit


110


is most likely to strike the upper curving wall section


196


of the exhaust duct


112


, which is in line with the airstream rising up the lower section of the exhaust duct


112


, and be deflected at least partially toward the mouth


138


of the exhaust duct


112


. Rebounding of such an object, as in prior art devices, and particularly multiple rebounding, of such objects is particularly unlikely.




In another embodiment, the transition from the generally round cross-sectional shape of the bottom


122


of the exhaust duct


112


to the generally oval cross-sectional shape of the mouth


138


is accomplished while maintaining equal cross-sectional area in planes perpendicular to a curve running through the center of the exhaust duct


112


. As will be apparent to those skilled in the art, maintaining such a uniform cross-sectional area reduces velocity changes in the airstream which may also contribute to turbulence and noise.




In another embodiment, the cross-sectional shapes of the lower portion


122


and mouth


138


of the exhaust duct may have the same shape. For example, both could be round or oval. In such case, the interior of the exhaust duct


112


should still be configured such that the interior walls are smoothly contoured to avoid generation of turbulence.




The dirty air exhaust duct


112


and associated components


156


,


170


,


172


of the present embodiment may be made of a thermoplastic or thermosetting material or other suitable material by one or more known processes such as injection molding, casting, machining and the like, but preferably is made by injection molding of a thermoplastic material. Even more preferably, the material should be of sufficient rigidity and strength to permit the exhaust duct


112


to function as a component of the elongated handle


103


of the vacuum cleaner


110


.




The exhaust duct


112


may be formed in two halves, as illustrated in

FIG. 4

, and these halves may be joined by any of a variety of known methods, such as the use of vibratory welding, thermal bonding, or solvent or adhesive bonding.




The detailed descriptions of the above embodiments are not exhaustive descriptions of all embodiments contemplated by the inventors to be within the scope of the invention. Indeed, persons skilled in the art will recognize that certain elements of the above-described embodiments may variously be combined or eliminated to create further embodiments, and such further embodiments fall within the scope and teachings of the invention. It will also be apparent to those of ordinary skill in the art that the above-described embodiments may be combined in whole or in part with prior art methods to create additional embodiments within the scope and teachings of the invention.




Thus, although specific embodiments of, and examples for, the invention are described herein for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. The teachings provided herein of the invention can be applied to other structures. In general, in the following claims, the terms used should not be construed to limit the invention to the specific embodiments disclosed in the specification. Accordingly, the invention is not limited by the foregoing disclosure, but instead its scope is to be determined by the following claims.



Claims
  • 1. A floor care device comprising:a head adapted to be manipulated by a user across a surface; an elongated handle pivotably connected to said head and having a grip at the end thereof remote from the head adapted to be gripped by a user; and a mid-level handle connected to said elongated handle intermediate said grip and said head, said handle being configured to be gripped by the hand of a user, said mid-level handle being movable between a retracted position in which it is adjacent the elongated handle and an extended position in which it extends outwardly from said elongated handle, wherein said mid-level handle is adapted to remain in its retracted position when positioned therein.
  • 2. The floor care device of claim 1 wherein said mid-level handle is adapted to remain in its extended position when positioned therein.
  • 3. The floor care device of claim 1 wherein the mid-level handle comprises a neck section pivotably connected to the elongated handle and a grip section connected to the neck section at its distal end, said grip section having a width which is greater than that of the neck section and which extends outwardly on both sides of the neck section.
  • 4. The floor care device of claim 3 wherein the floor care device includes a power cord, and wherein the width of the grip section is sufficiently wider than the neck section such that a plurality of loops of the power cord may be looped around the neck section and retained thereon when the mid-level handle is in its extended position.
  • 5. The floor care device of claim 3 further comprising an upper cord receiver connected to the elongated handle at a position between the mid-level handle and the distal end of the elongated handle for receiving the upper portion of loops of a power cord.
  • 6. The floor care device of claim 5 wherein said upper cord receiver comprises an upwardly-facing portion of the grip mounted at the distal end of the elongated handle.
  • 7. The floor care device of claim 3 wherein said mid-level handle is restricted from pivoting upward relative to the elongated handle beyond the extended position.
  • 8. The floor care device of claim 7 wherein the neck of the mid-level handle is connected to a generally cylindrical pivot and wherein said generally cylindrical pivot extends through a generally cylindrical pivot mount channel mounted to the elongated handle.
  • 9. The floor care device of claim 8 wherein said pivot mount channel is formed by upper and lower handle supports connected to the elongated handle.
  • 10. A mid-level handle for a floor care device having an elongated handle connected to a floor-engaging head comprising:a handle; a mount for connecting the mid-level handle to said elongated handle such that the mid-level handle is movable between an extended position and a retracted position relative to the elongated handle, wherein said mid-level handle is adapted to remain in its retracted position when positioned therein.
  • 11. The mid-level handle of claim 10 wherein said mid-level handle is adapted to remain in its extended position when positioned therein.
  • 12. The mid-level handle of claim 10 wherein the mid-level handle comprises a neck section pivotably connected to the mount and a grip section connected to the neck section at its distal end, said grip section having a width which is greater than that of the neck section and which extends outwardly on both sides of the neck section.
  • 13. The mid-level handle of claim 12 wherein the floor care device includes a power cord, and wherein the width of the grip section is sufficiently wider than the neck section such that a plurality of loops of the power cord may be looped around the neck section and retained thereon when the mid-level handle is in its extended position.
  • 14. A floor care device comprising:a head for engagement with a floor; a grip located remotely from and operatively associated with said head, said grip adapted to be used by a user for controlling said floor care device; a mid-level handle mountable to said floor care device between said grip and said head; and a handle mount for movably mounting said handle to said floor care device such that said mid-level handle can be moved between a first, extend position in which the mid-level handle extends generally transversely to a line between said grip and said head, and a second, retracted position adjacent a portion of said floor care device, wherein said handle further includes a positioner for retaining said handle in its retracted position.
  • 15. The floor care device of claim 14 wherein said handle further includes a positioner for retaining said handle in its extended position.
  • 16. The floor care device of claim 15 wherein said mid-level handle is adapted to receive loops of cord therearound and to retain said loops of cord thereon.
  • 17. The floor care device of claim 16 wherein said mid-level handle comprises a narrow section proximate to the handle mount and a broad section mounted to said narrow section at a location remote from said handle mount.
  • 18. The floor care device of claim 16 wherein said mid-level handle is pivotably mounted to said floor care device.
  • 19. The floor care device of claim 14 wherein said handle includes a loop section adapted to be gripped by the hand of a user.
  • 20. A mid-level handle for a floor care device, said floor care device having a head for engagement with a floor, a grip located remotely from and operatively associated with said head, said mid-level handle comprising:a handle adapted to be gripped by the hand of a user, a handle mount for pivotably connecting said handle to a floor care device at a location intermediate the head and grip thereof such that said handle is pivotable between an extended position and a retracted position; and a positioner for releasably maintaining said handle in at least one of said extended and said retracted positions.
  • 21. The mid-level handle of claim 20 further comprising a generally cylindrical member connected to said handle, and wherein said handle mount includes a member defining a generally cylindrical channel for rotatably mounting the generally cylindrical member connected to the handle.
  • 22. The mid-level handle of claim 21 further comprising a cam connected to said cylindrical member and a leaf spring mounted to the handle mount, the cam and leaf spring being positioned such that the leaf spring bears on the cam when the generally cylindrical member is rotatably mounted in the generally cylindrical channel of the handle mount.
  • 23. The mid-level handle of claim 21 wherein said handle includes a narrow neck section connected adjacent one end to said generally cylindrical member and a broad grip section connected to the other end of said narrow neck section such that a portion of said broad grip section extends laterally to either side of said narrow neck section.
US Referenced Citations (6)
Number Name Date Kind
2639456 Smith May 1953 A
2822566 Eberhart Feb 1958 A
2842788 Rench et al. Jul 1958 A
3667084 Valbona et al. Jun 1972 A
5113547 Mayhew May 1992 A
5216778 Suzuki et al. Jun 1993 A
Foreign Referenced Citations (1)
Number Date Country
3903451 Aug 1990 DE