Wheel mounting assembly and wheelchair therewith

Details Wheel mounting assembly and wheelchair therewith Wheel mounting assembly and wheelchair therewith

1999-06-14

2001-08-14

Hurley, Kevin (Department: 3419)

Land vehicles

Wheeled

Occupant propelled type

Reexamination Certificate

active

06273445

ABSTRACT:

BACKGROUND
Wheelchairs are typically relatively small, single-person conveyances that generally comprise a seat supported by side frames. The side frames are usually supported on a supporting surface by opposing front and rear wheels. The rear wheels may be supported by an axle that is engageable with a laterally extending axle tube. The axle tube may span between and traverse the opposing side frames. The ends of the axle tube may be attached to the side frames by a double clamp configuration. A suitable double clamp configuration typically includes a frame clamp and an axle tube clamp vertically spaced from the frame clamp. The frame clamp usually extends in a direction substantially perpendicular relative to a direction in which the axle tube clamp extends. The frame clamp generally comprises two components, which are attachable to one another. The axle tube clamp generally comprises a third component, which is attachable to one of the frame clamp components.
What is needed is a wheel mounting assembly which requires fewer components, and thus, is lighter and consumes less material, and hence, is more cost effective.
SUMMARY
The invention is directed to a wheel mounting assembly that satisfies the foregoing needs as well as other needs. The wheel mounting assembly includes a body coupled to the wheelchair frame by a coupling. An opening in the outer surface of the body is shaped and dimensioned to receive a projection on the axle tube to form a joint between the axle tube and the body. Alternatively, a joint may be formed by an opening in the outer surface of the axle tube that is shaped and dimensioned to receive a projection on the body. The invention is also directed to a wheelchair having a pair of spaced side frames and a body coupled to each of the side frames. An opening in the outer surface of each body is shaped and dimensioned to receive a projection on an axle tube to form a joint between the axle tube and each body. Each wheel of a pair of wheels has an axle received by the axle tube.


REFERENCES:
patent: 5409247 (1995-04-01), Robertson et al.
patent: 5593173 (1997-01-01), Williamson
patent: 5851018 (1998-12-01), Curran et al.
patent: 6027132 (2000-02-01), Robinson et al.

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