Wheelchair and one-piece molded braking support wheel therefor

Details Wheelchair and one-piece molded braking support wheel therefor Wheelchair and one-piece molded braking support wheel therefor

2007-07-31

2007-07-31

Torres, Melanie (Department: 3683)

Brakes

Vehicle

C188S325000

Reexamination Certificate

active

11247765

ABSTRACT:
A molded braking and support wheel assembly for a multi-wheeled wheelchair for a handicapped person. The wheel assembly includes a braking support wheel molded as a single unit of plastic or plastic-like material having concentric components including a tire receiving rim, a wheel bearing and brake assembly receiving hub, and spaced wheel spokes substantially radially extending between the hub and rim. A ring or band-shaped metal brake drum is also molded as a unit into the hub, the brake drum having a generally cylindrical inner braking friction surface and plastic-interlocking outer surface features which permanently interlock with the plastic material when the braking support wheel is mold formed. The plastic-interlocking outer features are molded with the hub into a single unit with the support wheel to secure the brake drum from relative movement in the hub. The brake drum defines a generally cylindrical cavity for operatively receiving the brake assembly. The hub includes a wheel bearing cavity coaxial with said brake drum for receiving spaced wheel bearings positioned therein.

REFERENCES:
patent: 4211309 (1980-07-01), Ruggiero
patent: 4226413 (1980-10-01), Daughterty
patent: 4641847 (1987-02-01), Busse
patent: 4907794 (1990-03-01), Rose
patent: 5020560 (1991-06-01), Turbeville
patent: 6123128 (2000-09-01), Ringenbach
patent: 6158757 (2000-12-01), Tidcomb
patent: 6631925 (2003-10-01), Lawson, Jr.
patent: 7124858 (2006-10-01), Ikegami et al.

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