1. Technical Field
The present disclosure relates to walking aids and, more particularly, to an improved adjustable walker adaptable for use by individuals having varying needs and/or physical characteristics.
2. Background of Related Art
Walkers are commonly used by the elderly, handicapped and infirm to assist such individuals in maintaining their mobility, for example, to exercise and/or to perform daily tasks, without the need of a nurse or aide. Typically, a walking device, or walker, includes four legs that form a frame having an open end to permit the user to stand within the frame, thereby providing support and balance to the individual. Additional features such as handles and/or wheels may also be provided to assist the individual in maneuvering about. Further, walkers may be formed from lightweight materials to increase maneuverability, and/or may be adapted to fold down, or collapse, to allow for easy storage in relatively small spaces, e.g., the trunk of a car.
The exact dimensions and/or configuration of a walker may ultimately depend on the physical characteristics of the individual, e.g., height and weight, or may depend on other factors such as the amount of support and balance heeded and/or the specific condition that requires the use of the walker. Accordingly, an adjustable universal walker capable of adjusting through a range of heights while providing adequate stability and support at each specific height is desirable in that such a walker obviates, the need for medical supply stores, nursing homes, hospitals, and they like to carry multiple walkers, e.g., fixed walkers of varying size and/or adjustable walkers having limited size ranges. In other words, an, adjustable universal walker provides a single walker adaptable for use by the young, elderly, handicapped and/or infirm without sacrificing stability, support, or maneuverability.
In accordance with one embodiment of the present disclosure, an adjustable walker is provided. The adjustable walker includes first and second side frames coupled to one another. Each side frame includes a front leg and a rear leg. Each of the front and rear legs defines a fixed end and a free end. The front and rear legs are coupled to one another at the fixed ends thereof. Each of the legs is extendable between a first position defining a first length and a second position defining a second length that is greater than the first length. Each of the legs further includes a locking mechanism for releasably fixing the leg in the first and/or second position. A side brace is coupled to both the front leg and the rear leg and includes a side rail that extends transversely between the legs. The side brace is moveable along at least a portion of the front and rear legs, e.g., up and down the legs, between the fixed ends and the free ends thereof. The side brace includes a latching mechanism for releasably fixing the position of the side brace with respect to the legs.
In one embodiment, each of the legs includes an inner shaft and an outer shaft. The outer shaft is moveable with respect to the inner shaft, e.g., telescopically, between a substantially overlapping position and an extended position for moving the leg between the first and second position.
In another embodiment, the locking mechanism includes a plurality of apertures defined within the outer shaft of each of the legs. The apertures are positioned along a length of the outer shafts. A locking pin is disposed on the inner shaft of each of the legs. The locking pin is releasably engagable within each of the apertures for selectively fixing the position of the inner and outer shafts with respect to one another. In other words, the locking mechanism is configured to selectively fix the height of the legs, once the legs are adjusted to the required height.
In another embodiment, the first end of the outer shaft of each of the legs includes an annular cuff disposed therearound. The side brace may be moved along the legs into position adjacent the annular cuffs. Positioning the side brace adjacent the annular cuffs positions the side brace in a specific pre-determined position along the legs according to the height of the legs, e.g., to provide structural support to the side frame.
In yet another embodiment, the latching mechanism includes first and second portions that are hingable with respect to one another between an open position and a closed position. When moved to the closed position, the first and second portions are annularly positionable about the front or rear leg, e.g., the first and second portions cooperate to surround the leg, to thereby fix the relative position of the side brace with respect to the legs. Further, the latching mechanism may include a locking key for retaining the first and second portions in the closed position.
In still another embodiment, the free ends of the front legs include a wheel coupled thereto for allowing wheeled movement of the walker. Additionally, the first and second side frames may be coupled to one another by a front cross-bar and/or may include a handle portion that fixedly engages the fixed ends of the front and rear legs to one another.
In still yet another embodiment, the front and rear legs are angled with respect to one another. More specifically, the front and rear legs are angled such that the fixed ends of the legs are spaced-apart a first transverse distance, while the free ends of the legs are spaced-apart a second transverse distance that is greater than the first transverse distance.
In another embodiment, the side brace is adjustable between a first position having a first length corresponding to the first transverse distance between the legs and a second position having a second length corresponding to the second transverse distance between the legs. Further, the side brace may be configured for automatic adjustment to define a length corresponding to the transverse distance between the front and rear legs, i.e., the side brace adjusts its length depending on the positioning of the side brace along the legs.
The side brace may include a pair of connectors coupling the side brace to each of the legs. In such an embodiment, the side rail interconnecting the connectors and is moveable with respect to one (or both) of the connectors between a first position corresponding to the first length of the side brace and a second position corresponding to the second length of the side brace. To facilitate adjustment of the side brace, the side rail may include a pin disposed within a slot defined within one of the connectors. The pin is moveable from a first end of the slot to a second end of the slot such that the side rail is moveable between the first position and the second position. Alternatively, the side rail may include an inner portion and an outer portion moveable with respect to the inner portion to facilitate adjustment of the side brace.
In accordance with another embodiment of the present disclose, an adjustable walker is provided. The adjustable walker includes first and second side frames coupled to one another. Each side frame defines a generally “A”-shaped configuration and includes a handle portion, a front leg, a rear leg and a side brace. The front and rear legs are extendable between a first position defining a first height of the side frame and a second position defining a second height of the side frame that is greater than the first height. The side brace is coupled to the legs and extending transversely therebetween. The side brace is moveable with respect to the legs along the height thereof, e.g., up and down the legs. The side brace is adjustable between a first position defining a first length corresponding to a first transverse distance between the legs and a second position defining a second length corresponding to a second transverse distance between the legs. In other words, as the side brace is moved along the legs, the length of the side brace is adjusted to account for the “A”-shaped configuration of the side frames.
In one embodiment, the side brace further includes a latching mechanism for releasably fixing the position of the side brace with respect to the legs.
In another embodiment, the side brace includes a side rail and a pair of connectors. The side rail includes a pin that is disposed within a slot defined within one of the connectors. The pin is moveable from a first end of the slot to a second end of the slot to permit adjustment of the side brace between the first and second positions.
In another embodiment, the side brace includes a side rail having an inner portion and an outer portion that is moveable with respect to the inner portion to permit adjustment of the side brace between the first and second positions.
Various embodiments of the presently disclosed walker are described herein with reference to the drawings wherein:
Turning now to
Side frame 100 of walker 10 includes a handle portion 110 disposed at a top end 112 thereof to facilitate grasping and maneuvering of walker 10 by the user. Extending downwardly from handle portion 110 are front and rear legs 120, 140, respectively, that define a generally “A”-shaped, or oblique configuration. More specifically, each leg 120, 140 is coupled to handle portion 110 at a respective fixed end 122, 142 thereof and extends downwardly therefrom to a respective free end 124, 144 thereof. Further, each leg 120, 140, is adjustable between a first position, defining a first length, or height, and a second position defining a second length, or height, such that, as will be described in greater detail below, a height of walker 10 may be adjusted according to the specific physical characteristics and/or needs of the user.
With continued reference to
Side frame 200 of walker 10 is substantially similar to side frame 100, discussed above, and includes a handle portion 210 disposed at a top end 212 thereof, front and rear adjustable legs 220, 240, respectively, extending downwardly from handle portion 212, and an adjustable side brace 260 coupled to each of front and rear legs 220, 240, respectively, and extending therebetween.
As shown in
Alternatively, as shown in
Referring now to
Turning now to
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With continued reference to
As can be appreciated, the above-described configuration allows walker 10 to be adjusted according to the specific height of the user, or simply to adjust walker 10 to a desired height. In use, tabs 129, 149, of locking pins 127, 147, respectively, are squeezed inwardly against the bias until tabs 129, 149, are substantially disposed within inner shafts 126, 146, respectively. From this position, inner shafts 126, 146, may be slid with respect to outer shafts 130, 150 into position adjacent the aperture 132, 152 corresponding to the desired height, or position of walker 10. As tabs 129, 149 are moved adjacent the desired aperture 132, 152, tabs 129, 149 are released, permitting respective locking pins 127, 147, to return, under the spring-bias, to the outward, or initial position wherein tabs 129, 149 extend through apertures 132, 152, respectively, locking inner shafts 126, 146 and outer shafts 130, 150, respectively, in fixed position relative to one another. However, it is envisioned that other releasable securement mechanisms (not shown) may be provided for incrementally (or continuously) fixing the position of inner shafts 126, 146, with respect to outer shafts 130, 150 and, thus, for fixing the height of walker 10.
With continued reference to
With reference to
With continued reference to
As shown in
With reference now to
The engagement of pins 181, 183 within respective slots 182, 184 secures side rail 178 to sleeves 166, 172, and, thus to legs 120, 140 and also permits expansion and contraction of side brace 160 between a first, or minimum width, i.e., where pins 181, 183 are disposed at outer-most ends 182a, 184a of slots 182, 184 and a second, or maximum width, i.e., where pins 181, 183 are translated along slots 182, 184 to the inner-most ends 182b, 184b, of slots 182, 184, respectively. As can be appreciated, the length of each slot 182, 184 defines the range of expansion/contraction, i.e., the range of widths, of side brace 160.
In use, front and rear legs 120, 140 are first adjusted, or expanded to the desired position, or height. Next, side brace 160 is translated downwardly (or upwardly) with respect to legs 120, 140 into position, e.g., adjacent annular cuffs 134, 154 of respective outer shafts 130, 150 of legs 120, 140, respectively, and is simultaneously expanded (of contracted) to conform to the width between legs 120, 140, e.g. from width “W1” to width “W2,” such that side frame 100 and, thus, walker 10, maintains its structural support and stability regardless of the height of walker 10.
Turning now to
Latching mechanism 196, as shown in
From the foregoing and with reference to the various figure drawings, those skilled in the art will appreciate that certain modifications can also be made to the present disclosure without departing from the scope of the same. While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.
The present application claims priority to, and benefit of, U.S. Provisional Patent Application No. 61/333,089 entitled “Adjustable Walker” filed on May 10, 2010, the entire contents of which are hereby incorporated by reference herein.
Number | Date | Country | |
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61333089 | May 2010 | US |