Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1978-06-16
1980-12-23
Powell, William A.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152357R, 152359, 152361R, 156123R, 57210, 57902, B60C 900, D02G 302
Patent
active
042404860
ABSTRACT:
A radial spare tire which, upon inflation, stretches from a shape having a reduced diameter adjacent the wheel rim on which the tire is mounted, to a regularly sized radial tire which the spare tire is designed to replace. The tire is molded and vulcanized in an unstretched configuration of reduced size. The stretching of the tire is made possible by the utilization in the carcass and belt plies of reinforcement cords which, during the processing of the cord and building of the tire, have a relatively high modulus of elasticity. When the cords are subjected to vulcanization temperatures, they lose their strength and have a low modulus of elasticity to permit the stretching of the tire to a regular size. The cords then develop a high modulus of elasticity in the stretched condition to provide the required reinforcement of the tire in the inflated regular size condition.
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Schmit Georges J. E.
Welter Thomas N. H.
Lacher Frederick K.
Pincelli Frank
Powell William A.
Rodgers Lois E.
The Goodyear Tire & Rubber Company
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