Tire pressure maintenance device

Details Tire pressure maintenance device Tire pressure maintenance device

1979-07-16

1981-05-26

Wityshyn, Michael G.

Resilient tires and wheels

Tires, resilient

Inflating devices

152429, B60C 2312

Patent

active

042692520

ABSTRACT:
An air pump mechanism which automatically pumps a small quantity of air into an automobile tire upon each rotation of the wheel in order to keep the tire from slowly deflating; the mechanism including an air pump inside the tire which is operated each time that the tire is deformed by rolling on the road surface, and the mechanism also including an adjustable safety valve to prevent over-inflation.

REFERENCES:
patent: 535505 (1895-03-01), Moore
patent: 1246464 (1917-11-01), Randall
patent: 2214597 (1940-09-01), Smith
patent: 2420224 (1947-05-01), Bymark
patent: 3097682 (1963-07-01), Harkins
patent: 3150705 (1964-09-01), Geraghty
patent: 3247882 (1966-04-01), Pratt

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