The present invention relates to an accessory carrier for use with a conventional collapsible wheelchair; and more specifically, relates to a carrier configured to retain a removable wheelchair rigging on the back side of a wheelchair when the rigging is not in use.
Conventional collapsible wheelchairs are commonly used to accommodate a variety of individual users, as well as intended to accommodate the different medical needs of those individuals. For example, some users may require additional appendage support when using a wheelchair, while others may not. For this reason, removable appendage support structures, often referred to as riggings, have been developed that integrate with the wheelchair and provide additional structural support when required. Common examples of such riggings include removable footrests, e.g., foot plates, elevating leg rests, etc. However, because these riggings are not required for all wheelchair users, particularly in institutional settings where wheelchairs are commonly shared among many users, the riggings may be selectively removed from the wheelchair when they are not required. Further, some wheelchair users require the use of riggings at sometimes but at other times require the riggings to be removed from the front of the chair. For example, a user may use riggings typically but must remove them during meals in order to fit their chair and occupant into a standard dining table.
Removal of wheelchair riggings often results in the riggings becoming misplaced or stored separately from the wheelchair, where their retrieval is inconvenient. Also, because wheelchair structure and dimensions vary amongst differing models or manufacturers, the riggings may not be universally interchangeable amongst all wheelchairs. For these reasons, it is desirable to keep the rigging associated with a specific wheelchair, even when that rigging is not being used, or during a temporary i.e., relatively short duration, removal of the rigging.
Prior attempts to solve this problem have included hanging rigging storage bags on the back of the wheelchair. However, when these bags are used, they often swing into the back of the seated wheelchair user or impede the lower leg movement of the individual pushing the wheelchair from the rear. Accordingly, an ergonomic rigging storage solution is needed. Additionally, such bags or alternative storage solutions may inhibit a conventional collapsible wheelchair from folding inward for storage purposes. Accordingly, a rigging storage solution that does not prevent folding of a collapsible wheelchair is also needed.
The present inventors have recognized that that by affixing a receptacle that this sized to securely retain an unused appendage support rigging directly to the rear of the wheelchair it is possible to retain the unused rigging in association to its corresponding wheelchair, while not occupying both opposing sides at the rear of the wheelchair. By reducing the width of the receptacle, the invention allows for multiple receptacles to be secured to the rear of the wheelchair, or for a single receptacle to be mounted to the wheelchair in combination with a compressed gas cylinder, e.g., oxygen tank. Importantly, the size and attachment positioning of receptacle does not substantially reduce the ability of a collapsible wheelchair to collapse when two receptacles are mounted to its opposing sides; i.e., a wheelchair having two receptacles may still collapse to greater than 75% of its fully collapsed configuration.
Specifically the, in one embodiment, the present invention provides an assembly having a wheelchair and a wheelchair rigging receptacle. The wheelchair includes a frame with opposing first and second sides where a first wheel rotatably affixed to a first side and a second wheel rotatably affixed to a second side. The first side of the frame includes a first vertical tube and a first horizontal tube extending rearwardly of the first vertical tube while the second side of the frame includes a second vertical tube and a second horizontal tube extending rearwardly of the second vertical tube. A seating surface extends between the first and second sides of the frame and an appendage support rigging is releasably affixed to the frame. The assembly also provides at least one receptacle configured to retain the appendage support rigging within, when the appendage support rigging is not affixed to the frame. The receptacle has two opposing side walls, a rear wall extending between the two opposing side walls, and a bottom extending between a lower edge of the walls to define an interior cavity between an inner surface of the wall and the base that has a width approximately equal to a width of the appendage support rigging. The receptacle also includes at least one mounting device to affix the receptacle to the frame of the wheelchair.
It is thus a feature of at least one embodiment of the invention to provide a wheelchair assembly including at least one receptacle having an internal cavity into which an unused appendage support rigging can be slid, through an open top surface, when the appendage support rigging is not affixed to the frame.
The receptacle of the assembly may have a width less than or equal to half the width of the wheelchair frame.
It is thus a feature of at least one embodiment of the invention to provide an assembly in which two receptacles are mounted to the wheelchair.
The wheelchair of the assembly may be a collapsible wheelchair and the receptacle of the assembly may have a width less than or equal to 60% of the width of the collapsible wheelchair frame.
It is thus a feature of at least one embodiment of the invention to allow a collapsible wheelchair having two mounted receptacles to collapse to at least 75% of its fully collapsed configuration.
The receptacle of the assembly may have walls and the base comprise a semirigid core disposed within a foam pad.
It is thus a feature of at least one embodiment of the invention to provide flexible and/or resilient walls that are configured to deform about the unused appendage support rigging as to provide a friction engagement to retain the rigging within the receptacle's interior cavity.
The receptacle of the assembly may include outer surfaces of each wall that are formed of a fluid resistant fabric.
It is thus a feature of at least one embodiment of the invention to provide a fluid resistant receptacle that can easily be washed and resists absorption of fluids.
The receptacle of the assembly may include at least one drain grommet in the base.
It is thus a feature of at least one embodiment of the invention to provide a fluid drain in the bottom of the receptacle to facilitate drying of the interior cavity.
The receptacle of the assembly may include a first mounting device configured to secure the rear wall of the receptacle to a vertical tube of the wheel chair frame at a variable position over a height of the receptacle's rear wall.
It is thus a feature of at least one embodiment of the invention to provide a receptacle that can be securely mounted to the vertical tube of wheelchairs of varying dimensions.
The receptacle of the assembly may include a second mounting device configured to secure the base of the receptacle to a horizontal tube of the wheel chair frame at a variable position over a length of the receptacle's base.
It is thus a feature of at least one embodiment of the invention to provide a receptacle that can be securely mounted to the horizontal tube of wheelchairs of varying dimensions.
These particular advantages may apply to only some embodiments falling within the claims and thus do not define the scope of the invention.
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The receptacle 12 may include a first side wall 16, a second opposing side wall 18, a rear wall 20, a front wall 22, and a bottom 24 that extends between the lower edges of the walls 16, 18, 20, 22. The sidewalls 16, 18 may have two perpendicular edges of different lengths that will be positioned vertically and horizontally respectively as spanned by a convex are for example following a circular path. The vertical edge will generally be longer than the horizontal edge.
The side walls 16, 18 are spaced apart from one another at a width approximately equal to that of the rear wall 20 and front wall 22, which is approximately equal to the width of a folded wheelchair rigging, such that a folded wheelchair rigging may be securely placed into an internal cavity 26 defined between the receptacle's opposing walls 16, 18, 20, 22 and bottom 24 and retained in frictional engagement therein. Furthermore, the width of the receptacle 12 may be sufficiently narrow as to prevent the receptacle 12 from impeding or inhibiting the folding mechanism of a conventional collapsible wheelchair alone or when two receptacles 12 are mounted near opposite wheels of the wheelchair. For example, the receptacle 12 may have a width approximately between 2.0 inches and 5.0 inches, and preferably approximately 3.5 inches. The side walls may also have a height and length configured to securely retain the folded wheel chair rigging between the receptacle's opposing side walls 16, 18. Further, the receptacle 12 may have a greater height at or near the rear wall 20 of approximately between 10.0 inches and 24.0 inches, and preferable approximately 16.0 inches. As shown in
Collectively, the width, height and length of the receptacle 12 are preferably sized as to securely retain a folded wheelchair rigging, e.g. a removable footplate rigging, in a cavity 26 defined between at least some of the receptacle's opposing walls 16, 18, 20, 22, while simultaneously not impede or inhibit the folding mechanism of a conventional collapsible wheelchair. Furthermore, in one embodiment of the present invention, the width of the receptacle 12 is approximately half of the distance between the wheels of the wheelchair, when the wheelchair is in a collapsed configuration, such that two rigging carriers 10 may be simultaneously mounted to the wheelchair. For example, the receptacle 12 may have a width that provides approximately 75% to 100% closure of the wheelchair into its fully collapsed configuration when two rigging carriers 10 are simultaneously mounted to the wheelchair, and preferably approximately 90% to 100% closure of the wheelchair into its fully collapsed configuration when two rigging carriers 10 are simultaneously mounted to the wheelchair.
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Turning now to rear wall 20, the inner surface 62 and outer surface 28 are similarly formed of covering 56 as was described above. The inner core of the rear wall 20 is shown as a single layer 64 of a lightweight resilient material such as closed cell or open cell foam formed of polyurethane or polyethylene, which provides cushioning to the other outer rear wall 20 and allows the rear wall to collapse and expand. That is to say that the absence of a semirigid layer in the rear wall 20 (and corresponding front wall 22) allows the receptacle 12 to laterally expand and contract when receiving a rigging in the cavity 26 and ensure a secure fit thereof. Again, the single layer 64 is preferably water resistant and non-absorbent to allow the carrier 10 to be washed or otherwise contact water. It should be further understood that while the preceding discussion is directed to the rear wall 20, it may equally apply to the construction of the opposing front wall 22 and possibly the bottom 24.
The seams 66, which join both the coverings 56 and the walls 16, 18, 20, 22, 24 are stitched and may include a super imposed, lapped, bound, or flat seam. The seams 66 may also include piping to provide enhanced strength to the seams 66.
As was discussed above, the materials that form the covering 56 and inner core layers 58, 60, 64 of the receptacle 12 may be water resistant and non-absorbent materials to allow for washing of the carrier 10. Additionally, as shown in
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In one embodiment of the present invention, the arcuate front edge 84 of the receptacle 12 has a length of approximately between 9.0 inches and 15.0 inches, and preferably approximately 12.75 inches. In this configuration, the arcuate front edge 84 of the receptacle 12 generally conforms to the outer edge of the wheel 82, such that the carrier 10 does not extend substantially radially outwardly of the outer perimeter of the wheel 82. As such, the carrier 10 is shielded from most contact by the wheelchair wheel 82. More preferably, the carrier 10 does not extend radially outwardly of the outer perimeter of the wheel 82. Furthermore, generally the arcuate front edge 84 of the receptacle 12 may generally align with the curvature of the wheel 82, as shown in
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It is specifically intended that the present invention not be limited to the embodiments and illustrations contained herein and the claims should be understood to include modified forms of those embodiments including portions of the embodiments and combinations of elements of different embodiments as come within the scope of the following claims. All of the publications described herein, including patents and non-patent publications, are hereby incorporated herein by reference in their entireties.
This application claims priority to U.S. Provisional Patent Application Ser. No. 62/728,561 filed on Sep. 7, 2018, the entirety of which is incorporated herein by reference
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