Pressure-responsive switch device for pneumatic tires

Details Pressure-responsive switch device for pneumatic tires Pressure-responsive switch device for pneumatic tires

1974-08-01

1976-06-15

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83S, 200 6125, 340 58, H01H 3534

Patent

active

039638871

ABSTRACT:
There is described a pressure-responsive switch device particularly suitable for the detection of a pressure drop in a pneumatic tire on a vehicle wheel, wherein a contact carrying movable rod member is securely urged into a contact closing position by means of a conical compression spring to actuate a warning device whenever the internal pressure of the tire drops below a predetermined level. A permanent magnet may be mounted at the contact point of the switch to impart a quick motion thereto.

REFERENCES:
patent: 3109908 (1963-11-01), Clason
patent: 3430196 (1969-02-01), Dalton
patent: 3444341 (1969-05-01), Mighton
patent: 3588813 (1971-06-01), Robinson
patent: 3636484 (1972-01-01), Lea
patent: 3657501 (1972-04-01), Hoyt

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