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US 2016/0242976 A1Published application
Elastic wheelchair hand rim cover and methods of use
AssigneeIntelliwheels, Inc.
InventorsScott C. Daigle, Marissa SIERO, Josh GEORGE, Steven PICK
Life of this patent
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Abstract
Soft and stretchable wheelchair hand rim covers are disclosed, which fit onto any wheelchair hand rim to improve the ergonomics, power transfer, and comfort of the way that the wheelchair user interacts with the hand rim of the wheelchair.
Claims20
A wheelchair hand rim cover comprising:
- an elastic loop having a relaxed diameter and cross sectional area, wherein the product of the cross sectional area and modulus of elasticity ranges from about 70 pounds to 180 pounds;
- a gap extending circumferentially along the elastic loop and corresponding to the hand rim;
- a first edge and second edge separated by the gap;
- a hollow interior bounded by an interior wall of the elastic loop;
- and
- an exterior surface.
3 more elements
and rim cover of claim 6, wherein the elastic loop has a surface roughness of at least about 30 Ra micro-inches;
- and wherein substantially continuous circumferential contact between the interior wall and the hand rim has a coefficient of static or kinetic friction of at least 0.39.
The hand rim cover of claim 7, further comprising a stretched diameter, wherein the stretched diameter is about 125% the diameter of the relaxed diameter;
- and wherein the first edge is comprised of mount recesses.
A wheelchair hand rim cover comprising:
- a hand rim including at least one groove disposed around a circumferential ring of the hand rim;
- the at least one groove includes a longitudinal axis running along the entire circumference of the hand rim;
- and the at least one groove complimentary fits with the groove of the hand rim cover as to keep the hand rim cover from being axially pushed from the longitudinal axis of the at least one groove.
Dependencies are inferred from the claim text.