Method of making a support roller

Details Method of making a support roller Method of making a support roller

1984-06-04

1986-02-04

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

264267, 264274, 301 63PW, B21K 138

Patent

active

045676330

ABSTRACT:
A roller for supporting the rotating drum of a clothes drier or similar appliance includes a hub which is molded from a suitable polymer and a rubber tire which fits around and is interlocked with the hub. The tire is of uniform cross-sectional configuration and is stressed so that it remains in intimate contact with the hub rim, even after substantial use. To manufacture the roller, the tire, which is molded in a separate operation, is placed in a mold cavity that is configured to seal against the side walls of the tire and yet permit the tire to expand radially, maintaining the seals along the tire side walls throughout the expansion. Once the mold is closed, a polymer in a plastic state is injected into the region of the cavity surrounded by the tire, there being enough polymer forced into the mold to expand the tire radially against an outer surface of the cavity. The expansion of the tire exceeds the shrinkage that the polymer experiences upon cooling and assuming a rigid state, and as a consequence the tire remains stressed and in intimate contact with the hub.

REFERENCES:
patent: 2665521 (1954-01-01), Ford
patent: 3452798 (1969-07-01), Ravreby
patent: 3578812 (1971-05-01), Taussig et al.
patent: 3849220 (1974-11-01), Suzuki et al.
patent: 3952786 (1976-04-01), Kreling et al.
patent: 4387070 (1983-06-01), Cunard et al.
patent: 4444435 (1984-04-01), Honsa

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