The present invention relates to earplug devices, and more particularly, relates to retractable tether mounted earplug assemblies retrofitted to head wear apparel, such as hardhat.
It is well known that repeated or prolonged exposure to insalubrious sounds of sufficiently high sound pressure level (SPL) may cause temporary or permanent hearing loss. This is never more apparent than at building construction sites where jackhammers, drilling, and catcalls are sometimes heard simultaneously. Alone, each task can generate a significant sound level, but two or more tasks performed simultaneously can be very detrimental to those close to either event.
Fortunately, earplugs and ear protection devices have been developed that prevent harm to the eardrum and allow individuals to endure extended time in such environments. More recently, high fidelity earplugs have been developed that can be tuned to isolate the ear from certain ranges of high or low frequencies.
While the vast majority of construction workers apply some form of ear protection voluntarily, such ear protection is often mandated by state law or by the construction company itself. Typically, construction workers merely place such ear protection in their pockets or other retrievable region, during nonuse, pulling them out for use when necessary. Such small earplugs, however, are easily lost or misplaced since they often only measure less than an inch in length,
Accordingly, there is a need for a device retractably mounting earplugs to a headwear device, preferably a hardhat.
The present invention provides a retractable earplug assembly for a hardhat. Briefly, the earplug assembly includes an elongated protective housing, a mounting assembly, a guide base and earplug and an elongated flexible tether. The protective housing defines an interior channel extending generally from one end of the housing to an opposite end thereof, and further defines an elongated guide portion, extending substantially adjacent the interior channel, and an elongated mount support portion. The housing is removably mounted to the interior wall of the hardhat through the mounting assembly which is configured to cooperate with the mount support portion and the interior facing wall of the crown portion for removably mounting therebetween. The guide base slideably cooperates with the guide portion for movement thereof along a fixed path in a direction generally longitudinally along substantially adjacent the interior channel between a first position and a second position. A distal portion of the elongated flexible tether is mounted to the earplug device, and a proximal portion thereof is mounted to the guide base. Hence when the guide base moves along the fixed path between the first position and the second position, the tether and the earplug device move between a retracted condition and an extended condition, enabling usable access to the earplug device.
In one specific embodiment, the mounting assembly comprises a VELCRO®-type fastener material.
In another specific arrangement, the guide portion and the guide base cooperate to form a zipper-type mechanism.
In still another embodiment, the protective housing is composed of a flexible sheet material.
Another specific embodiment provides a protective housing that is configured to cooperate with the hardhat crown portion such that when removably mounted thereto, the opposite end is position such that the earplug device is positioned proximate the bottom edge portion of the hardhat when in the retracted condition.
In yet another specific embodiment, the protective housing is comprised of a moldable polymer material. Further, the support portion is of a curvature generally conforming to that of the interior wall of the hardhat crown portion that the earplug assembly is to be mounted to.
In another embodiment, the elongated support portion of the housing is configured to seat in an elongated OEM channel formed in the interior wall of the hardhat.
Yet, another specific arrangement provides a mounting assembly that includes a plurality of spaced tab devices configured for friction fit mounting of the protective housing to the crown portion interior wall. The tab devices are disposed in pairs on opposite sides of the OEM channel at two or more spaced locations longitudinally therealong. Further, each tab device includes a tab member upstanding from the hardhat interior wall, and a corresponding engagement indent formed in aligned locations along the support portion. The indents are configured for aligned engagement with a corresponding tab member when the protective housing is mounted to the crown portion.
In still another embodiment, the housing guide portion defines a pair of opposed elongated flange portions forming an elongated slot extending along and in communication with the interior channel. The guide base slideably cooperates with the opposed flange portions for sliding movement between the first position and the second position.
Another arrangement includes a covered parking structure that cooperates with the hardhat crown portion to form a covered parking receptacle. This parking structure is formed and dimensioned for receipt of the earplug device therein in a manner substantially concealing the earplug device under the parking structure when in the retracted position.
In another aspect of the present invention, a hardhat assembly is provided that includes a hardhat having a crown portion with an interior facing wall, and a bottom edge portion thereof configured to extend generally equatorially around a forehead of a user when the hardhat is retained on the user's head. The assembly includes an elongated protective housing extending along the interior facing wall, and defines an interior channel extending generally from one end of the housing to an opposite end thereof. The housing further defines an elongated guide portion, extending substantially adjacent the interior channel. A guide base is provided that slideably cooperates with the guide portion for movement thereof along a fixed path in a direction generally longitudinally along substantially adjacent the interior channel between a first position and a second position. An elongated flexible tether is included having a distal portion thereof mounted to an earplug device, and a proximal portion thereof mounted to the guide base such that when the guide base moves along the fixed path between the first position and the second position, the tether and the earplug device move between a retracted condition and an extended condition, enabling usable access to the earplug device.
In one specific embodiment, the protective housing is integrally molded with the interior facing wall of the crown portion.
Another specific arrangement, a protective housing is independent of the hardhat, and includes a support portion and a mounting assembly. The mounting assembly is configured to cooperate with the support portion and the interior facing wall of the crown portion to removably mount the protective housing thereto.
In another embodiment, the hardhat assembly further includes a second earplug device, and an elongated flexible second tether having a distal portion thereof mounted to the second earplug device. A proximal portion of the second tether is mounted to the guide base such that when the guide base moves along the fixed path between the first position and the second position, the first and second tether and the first and second earplug device move simultaneously between the retracted condition and the extended condition, enabling usable access to the first and second earplug devices.
In accordance with another aspect of the present invention, a hardhat assembly is provided that include a hardhat and a retractable earplug assembly. The Earplug assembly includes a protective housing defining a mount support portion, a tether support structure, a first earplug device, and an elongated flexible first tether. This tether includes a distal portion mounted to the first earplug device, and a proximal portion thereof movably cooperating with the tether support structure between a first position and a second position. In the first position of the first tether proximal portion, the elongated first tether retractably cooperates with the tether support structure such that the distal portion of the flexible first tether and the first earplug device are positioned proximate to the protective housing, in a retracted condition. In the second position, the distal portion of the flexible first tether and the first earplug device can be repositioned away from the protective housing by a selected distance, enabling usable access to the first earplug device, in an extended condition. Finally, a mounting assembly is configured to cooperate with the mount support portion and a surface of the hardhat to removably mount the protective housing thereto.
In one specific embodiment, the tether support structure includes a first reel mechanism having a first spool rotating about a first spool axis. The proximal portion of the first tether cooperates with the first spool for rotation thereof about the first spool axis between the first position and second position. The first reel mechanism includes a first torsion spring cooperating with the first spool to bias the spool toward the first position. Consequently, the first tether and the first earplug assembly are biased toward the retracted condition.
In another embodiment, the first reel mechanism is configured to spool out the first tether toward the extended condition, in a stepped manner. Thus, the rotation of the first spool toward the first position and rewinding of the first tether toward the retracted condition is prevented. The first reel mechanism therefore includes a release device, selectively engagable to enable the first torsion spring to rotate the first spool toward the first position.
Still another specific embodiment provides a second earplug device; and an elongated flexible second tether having a distal portion thereof mounted to the second earplug device. A proximal portion of the second tether cooperates with the first spool for rotation about the first spool axis between the first position and second position. The first tether and the second tether, as a result, simultaneously move between the retracted condition and the extended condition.
In another specific embodiment, the hardhat assembly further includes a second earplug device; and an elongated flexible second tether having a distal portion thereof mounted to the second earplug device. The tether support structure further includes a second reel mechanism having a second spool rotating about a second spool axis. The second tether includes a proximal portion that cooperates with the second spool for rotation about the second spool axis between a respective first position and a respective second position. In the first position of the second tether proximal portion, the elongated second tether retractably and rotatably cooperates with second spool such that the distal portion of the flexible first tether and the first earplug device are positioned proximate to the protective housing, in a retracted condition, In the second position, the distal portion of the flexible first tether and the first earplug device can be repositioned away from the protective housing by a selected distance, enabling usable access to the second earplug device, in an extended condition.
In yet another specific arrangement, the protective housing includes a first housing portion, supporting the first reel mechanism, and a second housing portion, supporting the second reel mechanism thereon. The first housing portion and the second housing portion are configured to cooperatively articulate relative to one another.
The assembly of the present invention has other objects and features of advantage which will be more readily apparent from the following description of the best mode of carrying out the invention and the appended claims, when taken in conjunction with the accompanying drawings, in which:
While the present invention will be described with reference to a few specific embodiments, the description is illustrative of the invention and is not to be construed as limiting the invention. Various modifications to the present invention can be made to the preferred embodiments by those skilled in the art without departing from the true spirit and scope of the invention as defined by the appended claims. It will be noted here that for a better understanding, like components are designated by like reference numerals throughout the various figures.
Referring now to the embodiment of
Accordingly, a retractable earplug assembly is provided that can be retrofit mount to any headwear, but preferably a hardhat. When the tether and earplug devices are oriented in the extended condition, the extended tether is of a sufficient length that enables the user to access the earplugs, and place them in the user's ear for use when the headwear is being worn. When the tether and earplug devices are oriented in the retracted condition, the tether 28 retracted into or by the tether support structure 12 in a manner stowing away the tether and the position the earplugs close to the housing during non-use.
In one specific embodiment, as shown in
The earplug assembly 20 further includes a guide base 26 configured to slideably cooperate with the guide portion 23 for movement thereof along a fixed path in a direction generally longitudinally along and substantially adjacent the interior channel between the first position (
When the guide base 26 moves along the fixed path between the first position (
Referring now to
A topside material backing of the housing 24, in this embodiment, incorporates the guide portion 23 and the guide base 26 that is movably mounted to the guide portion 23 for movement thereof along a fixed path between the first position (
In the retracted condition, the guide base 26 and the mounted tether 28 cooperate to position and slideably move the tether along the fixed path wherein the earplug device is drawn in and positioned adjacent or proximate to the opposite end 14 of the housing 24. Accordingly, by orienting the placement of the opposite end 14 of the housing 24 proximate to the bottom edge portion 15 of the crown portion 25, the earplug devices 27 can also be oriented proximate thereto when in the retracted condition. As shown in
A pull tab 37 is included that is mounted to the guide base 26 to facilitate manual manipulation thereof between the first position and the second position. Moreover, as best illustrated in
The tether 28 is preferably composed of a relatively flexible non-elastic material that provides sufficient tensile strength to secure the earplug device 27 thereto. Such tether flexibility is required to permit operational use of the earplug device 27 when the hat is being worn, and when the tether is oriented in the extended condition. Furthermore, the tether must be capable of conforming to the profile of the crown portion 25, along the fixed path, when the tether 28 is moved to the retracted condition. Many cord or strap materials can be satisfactorily employed such as rope, twine, plastic, nylon, and other fabrics. One specific example of the tether material is a tether ribbon composed of fabric. While a non-elastic tether material is preferred, an elastic material can be employed, however.
Turning now to
To accommodate and retain the flexible tether along the fixed path, the elongated support portion 11 of the protective housing 24 further includes a bottom side material backing 30 that cooperates with the topside material backing 30 to form an elongated interior channel 41 extending substantially along the fixed path between the first position and the second position. This interior channel 41, as best viewed in
The elongated interior channel 41 is created along the fixed path by affixing the opposed longitudinal edge portions of the rectangular topside material backing 38 to the bottom side material backing 30. As indicated, the opposed edges of the guide portion are affixed to the corresponding edges of material backing 30. At one end of the interior channel is the opening 43 that is formed to receive into and deliver therefrom the tether as the guide base moved along the guide track 40.
As the guide base 26 is manually moved, via pull tab 37, along fixed path of the guide track from the second position, where the tether 28 is in the corresponding retracted condition (
During periods of non-use, the tether 28 can be retracted back into the interior channel 41 through the interior channel opening 43. This is performed by manually manipulating the guide base 26, via pull tab 37. By pulling the guide base along the guide track from the first position (
It will be understood that the extension length of the tether 28 can be controlled by the length of the fixed path for the first position to the second position. For example, should the guide portion 23 only extend from the top of the crown portion 25 to the rear bay portion 45 of the hardhat 21, the extension length of the tether 28 from the retracted condition to the extended condition will be proportionately shortened. Thus, depending upon the application, the tether extension can be adjusted accordingly.
In accordance with the present invention, as the head or guide base 26 moves, slides and/or ratchets along the guide portion 23, the tether is retained along the fixed path, substantially eliminating tether dangle. The guide portion, in one specific embodiment, is provided by a rail-type structure (i.e., the guide track 40) that cooperates with the guide base 26 to move both the guide base and the one end of the tether along the fixed path. In one example, a ratchet type structure maybe provided that locks the guide base along the fixed path between the first position and the second position unless the guide base, and hence the tether, is released. Other sliding-type devices suitable for use along the guided fixed path include plastic zippers and enclosed glide and pull devices.
More specifically, the example illustrated in
The pull tab 37 or the like is included mounted to a lower bracket 47 of the zipper slider for manual manipulation of the zipper between the first position and the second position. Similarly, the proximal portion 42 of the tether ribbon 28 is mounted to an upper bracket 48 of the zipper slider 26.
In this particular sample, when the zipper slider 26 is moved to the first position, retracting the tether into the interior channel 41, the zipper mechanism is zipped or closed. In contrast, when the zipper slider 26 is moved to the second position, delivering the tether from the interior channel 41, the zipper mechanism is unzipped or opened.
In one configuration of this embodiment, the protective housing contains one tether 28 and one earplug device 27. Accordingly, as shown in
In another configuration of this embodiment, two tethers 28, 28′ and two corresponding earplug devices 27, 27′ are mounted to a single guide base 26 of a single protective housing 24. As best illustrated in
Referring now to
In one particular embodiment, the housing 51 can be mounted to an adjustable head strap 53 or the like of the hardhat 21, using VELCRO® or any other common mounting device or adhesive. It will be appreciated that the housing 51 of the retrofit earplug assembly 50 may also be mounted to the exterior or interior of the crown portion 25 as well.
Turning now to
As best illustrated in
The protective housing 62 includes an upper guide portion 67, a tether support structure 63 and an opposed mount support portion 69 that is configured to have a curvature generally conforming to that of the rear portion interior wall of a corresponding channel 61a, 61b (
The tether support structure 63 of each relatively rigid protective housing 62 defines an elongated channel 66 extending from one portion to an opposite portion 68. As shown in
The distal portion of the tether 28 is mounted to the corresponding earplug device 27, while the proximal portion thereof is mounted to a guide base 71 slideably seated in the T-shaped channel 66 for reciprocating movement therein. An upper portion of the guide base slideably engages the opposed flange portions 72, 72′ of the guide portion 67, while the lower portion thereof slideably engages the T-shaped channel. As mentioned above, the guide base 71 slides along the protective housing enabling the tether 28 and earplug device 27 to reciprocate from an extended position (not shown), enabling accessible operation of the earplug devices 27, and a retracted position (
Thus, similar to the previous embodiments, when the guide base 71 and the tether assembly 60 are in the retracted position, the earplug device 27 can be pulled manually toward the extended position, moving the guide base from a first position to a second position at the rear of the hardhat 21. Similarly, to move the tether back toward the retracted position, the guide base 71, via a latch, is manually manipulated slideably along the protective housing back from the second position toward the first position.
As mentioned above, the protective housing 62 is removably mounted to the interior wall of the hardhat, preferably in the OEM channels thereof. In accordance with this embodiment, the outer width of the mount support portion 11 generally conforms to the width of the hardhat channels 61a, 61b upon which the protective housing is inset. The tolerance between these components should be relatively small since the protective housing is press-fit or friction fit in the respective channel.
In one particular mounting configuration, the earplug assembly 60 includes a mounting assembly 73 having a plurality of spaced-apart tab devices 75 configured for friction fit mounting of the protective housing to the crown portion interior wall 13. In one arrangement, as shown in
Each tab member 76 includes a respective nub portion that extends slightly transversely across the width of the channel. Corresponding to the size, position and dimension of the tab member nub portions of the mounting assembly 62 (when the housing is properly aligned in the corresponding OEM channel 61a, 61b are opposed front and rear slots or indents 65a, 65b formed in the protective housings 62. These corresponding mount components allow the earplug assemblies to be easily press-fit into the corresponding channel 61a, 61b until the nub portions of the tab members 76 are seated in the therein. Removal of these assemblies from the hardhat, on the other hand, is just as simple. It will be appreciated, however, that these assemblies can be mounted to the hardhat using any conventional mounting technique.
Turning now to
To mount the relatively rigid protective housing 62 to the brim portion 80, the mounting assembly 73 includes a tab portion 81 that defines a brim receiving socket 82 formed and dimensioned for cooperative receipt of the brim lip portion 83 therein. Moreover, the receiving socket 82 of the tab portion 81 is configured for friction-fit or press-fit receipt of the brim lip portion for securing mounting thereto. The receiving socket 82 therefore has a circular transverse cross sectional dimension (
Although the mounting assembly 73, for this embodiment, has only been described as being a press-fit of friction-fit mounting, it will be appreciated that a fastener or an adhesive may be applied to facilitate mounting thereto. Further, although the tab portion 81 of the mounting assembly is illustrated as a single continuous unit upstanding from a mount support portion 69 of the protective housing 62, the tab portion can be provided by two or more tab members (not shown) spaced-apart longitudinally along the protective housing 62.
Lastly, the mounting assembly 73, in this specific embodiment, orients the protective housing just below the brim portion 80 of the hardhat 21. It will be appreciated, however, that the mounting assembly 73 can be easily configured to position the housing above and/or atop the brim portion 80, or generally vertically level therewith without departing from the true spirit and nature of the present invention.
As best illustrated in
A guide portion 67 of the protective housing 62 defines a guide slot 85, formed between opposed flange portions 72, 72′ of the guide portion 67, which communicates with and extends substantially adjacent the interior channel 66. Similar to previous embodiments, a guide base 71 slideably cooperates with the interior channel 66 and the guide slot 85, via sliding engagement with the opposed flange portions 72, 72′, for reciprocating movement therein along a between fixed path between a first position (
Again similar to the previous embodiments, a flexible tether 28 is provided having a proximal portion mounted to the slideable guide base 71, and an opposite distal portion thereof mounted to an earplug device 27. Accordingly, in the first position of guide base and the tether proximal portion, the elongated tether retractably cooperates with the tether support structure 12 such that the distal portion of the flexible tether and the earplug device are positioned proximate to the protective housing, in a retracted condition (
In accordance with the present invention, extending distally from a distal portion of the protective housing is a parking structure 86 formed to seat the earplug device 27 therein during non-use, when the assembly is in the retracted condition. The parking structure 86 defines a passage 87 therethrough that is co-aligned with the housing interior channel 66, and is formed for sliding passage of the tether 28 therethrough.
As best viewed in
Referring now to
In another aspect of these retrofit earplug assemblies of the present invention, as best shown in
As shown in
To retractably spool the tether mounted earplug device 27, a proximal portion of the tether 28 is mounted to a reel or spool 111 of the retractable reel mechanism 102. As shown in
The reel mechanism 102 further includes a coiled torsion spring 115 wound about the axial post member. An inner end of the coiled torsion spring is wedged in a receiving slot 113 of the axial post member 112 of the mount support portion 105, and an opposite outer end is mounted to the spool 111. Thus, by pulling the tether 28 and/or the earplug device 27 with a force sufficient to overcome the torsional force of the coiled torsion spring 115, the tether 28 can be extended through the opening 110, causing the mounted earplug device 27 to move from the retracted condition (
The spool 111 is further caused to rotate around the axial post member 112 as the tether proximal end moves from the first position (
In one specific embodiment, upon manual release of the tether 28, the tensioned coiled torsion spring 115 causes the tether 28 to rewind about the spool 111 back toward the first position. Thus, the reel mechanism 102 will automatically rewind when the force applied to the tether 28 and/or earplug device 27 or is less than the torsional force of the coiled torsion spring 115.
It will be appreciated that the reel mechanism 102 can be stepped or ratcheted, using conventional ratchet mechanisms (not shown) and techniques. The coiled torsion spring 115, thus, will be unable to rewind the spool 111 back toward the first position unless the ratchet mechanism is released. These ratchet mechanisms thus include a release device to enable manual release from the ratcheting. Conventional release mechanisms include those requiring full extension of the tether 28, for instance, before a release can commence and allow the spool to rewind the tether. Another example of a release mechanism is to provide an accessible release button 116, such as shown in the specific embodiment of
In accordance with this embodiment of the present invention, the earplug assembly 100 may incorporate single or dual earplug devices 27. For example, in the earplug assembly 100 of
Referring now to
In still another configuration of the earplug assembly 100, as best illustrated in
In one specific embodiment, the housing 103 may include a first housing portion 117 and a second housing portion 117′ mounted to one another in an articulating manner (
The first and second housing portions 117, 117′ are hingedly mounted together through a hinge device 120. In one specific example, the hinge device 120 includes respective interlocking fingers or latches 121, 121′ both integral with their respective first and second housing portions 117, 117′. A hinge pin 122 extends through the nested interlocking fingers 121, 121′ to enable relative rotation about a hinge axis thereof.
In this particular configuration, each the first and second housing portion 117, 117′ defines a respective interior cavity, each formed for rotating support of the respective reel mechanism therein. Further, each housing portion 117, 117′ includes a spooling neck portion 108, 108′, disposed on opposite side the collective protective housing 103. The respective tethers 28, 28′ and earplug devices 27, 27′ are therefore delivered from the corresponding neck portions 108, 108′ in opposite directions thereof. It will be appreciated, however, that these neck portions 108, 108′ can be easily oriented at other locations circumferentially about the housing without departing from the true spirit and nature of the present invention.
The earplug assemblies' 100 of
Similar to the previous embodiments of
Turning now to
Although the present invention has been described in connection with the preferred form of practicing it and modifications thereto, those of ordinary skill in the art will understand that many other modifications can be made thereto within the scope of the claims that follow. Accordingly, it is not intended that the scope of the invention in any way be limited by the above description, but instead be determined entirely by reference to the claims that follow.
This application claims priority under 35 U.S.C. 119(e) from co-pending U.S. Provisional Patent Application No. 61/149,679, filed Feb. 3, 2009, entitled “RETRACTABLE EARPLUG ASSEMBLY FOR A HARDHAT, naming Brauner et al. as inventors, and which is incorporated herein by reference in its entirety and for all purposes. This application further claims priority from co-pending U.S. Provisional Patent Application No. 61/189,745, filed Aug. 21, 2008; and further claims priority from co-pending U.S. Provisional Patent Application 61/063,769, filed Feb. 5, 2008; both titled “RETRACTABLE EARPLUG RETROFIT KIT ASSEMBLY” and naming Brauner et al. as inventors, and both of which are incorporated herein by reference in their entirety and for all purposes.
Number | Date | Country | |
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61149679 | Feb 2009 | US | |
61189745 | Aug 2008 | US | |
61063769 | Feb 2008 | US |