Cast tire and method of manufacture

Details Cast tire and method of manufacture Cast tire and method of manufacture

1979-10-01

1981-03-03

Kittle, John E.

Resilient tires and wheels

Tires, resilient

Patches

152374, 156110CL, 156125, 264501, 264255, 264260, B60C 100, B29H 308

Patent

active

042535131

ABSTRACT:
A tire having a pair of bead portions for mounting on a rim, a tread portion radially outward of said bead portions and connecting sidewalls is cast and cured from different liquid elastomer forming materials in a three-stage process. First, the inner layer of the tire is molded of high modulus material on a collapsible core in a mold with an outer shell. Second, the first outer shell is removed and a second outer shell of a second mold is mounted around the core and cast inner layer. The tread portion of the tire is then molded by centrifugal casting from a low modulus material. Third, the sidewalls are molded of low modulus, optionally microcellular, material by injection of the liquid elastomer forming material into the sidewall spaces between the molded inner layer and the second outer shell.

REFERENCES:
patent: 2902072 (1959-09-01), Reuter
patent: 3701374 (1972-10-01), McGillvary
patent: 4044811 (1977-08-01), Dudek et al.
patent: 4049767 (1977-09-01), Vaidya
patent: 4088523 (1978-05-01), Gallizia
patent: 4185065 (1980-01-01), Knipp et al.

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