Apparatus for indicating pressure in pneumatic tires

Details Apparatus for indicating pressure in pneumatic tires Apparatus for indicating pressure in pneumatic tires

1980-09-24

1982-09-14

Myracle, Jerry W.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

340 58, B60C 2302

Patent

active

043488960

ABSTRACT:
Apparatus for indicating pressure in a pneumatic tire on a wheel while in motion on a vehicle, includes an actuator secured to the wheel so as to rotate therewith. The actuator has an extendible bag member in communication with air in the tire, a spring controlling extension of the bag by air in the tire to cause the bag member to be extended by an amount indicative of the air pressure in the tire, and a magnet positioned in accordance with the amount of extension of the bag member and therefore in accordance with the air pressure in the tire. A series of magnetically actuated switches are mounted on the vehicle for selective actuation by the magnet in accordance with the position of the magnet as it rotates with the tire, and indicators connected to the magnetically actuated switches indicate air pressure in the tire by indicating the magnetically actuated switch selectively actuated.

REFERENCES:
patent: 1744590 (1930-01-01), Sutherland
patent: 2790155 (1957-04-01), Lucia et al.
patent: 4157530 (1979-06-01), Merz

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