Resilient tires and wheels – Tires – resilient – Inflating devices
Patent
1986-03-12
1987-04-14
Scherbel, David A.
Resilient tires and wheels
Tires, resilient
Inflating devices
301 5VH, 137 57, 180282, B60C 2900
Patent
active
046570578
ABSTRACT:
A safety air valve for a tire comprising a casing adapted to be vertically mounted to a rim of a tire, the casing defining an air channel extending therethrough, the air channel containing an internal shoulder which extends into the air channel, a valve extending through the air channel for opening and closing the flow of air through the channel, the valve including a valve stem containing a valve head at one end thereof, the valve head being provided with a lip which is adapted to engage the shoulder in the air channel through the movement of the valve head through the air channel, a spring operatively associated with the valve stem to bias the valve head in closed position with the lip in engagement with the shoulder, and a weight member attached to the valve head whereby upon the achieving of excessive speed and correspondingly excessive tire rotation the centrifugal force on the weight member causes the valve to open against the bias of the spring.
REFERENCES:
patent: 2470873 (1949-05-01), Seitz
patent: 2737223 (1956-03-01), Plath
patent: 3003539 (1961-10-01), Tone
patent: 3603332 (1971-09-01), Canale
patent: 4375200 (1983-03-01), Bertani et al.
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