Differential pressure warning switch

Details Differential pressure warning switch Differential pressure warning switch

1974-10-24

1976-10-12

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Piston

200 83Y, 340 52C, 251324, H01H 3538, H01H 3534

Patent

active

039859860

ABSTRACT:
A differential pressure warning switch comprising a housing defining a chamber, hydraulic conduits communicating the master cylinder and front and rear fluid brake actuators of an associated vehicular brake system with the chamber, a shuttle piston movable within the chamber between opposed translated positions in response to differential pressure conditions existing between the front and rear brakes of the vehicle, and a pair of pressur responsive flexible diaphragm elements arranged adjacent the opposite ends of the shuttle piston and adapted to effect shuttle movement of the piston in response to predetermined differential pressur conditions in the brake system, whereby to complete an electrical circuit to an associated warning lamp or the like.

REFERENCES:
patent: 3011595 (1961-12-01), Heiss et al.
patent: 3187133 (1965-06-01), Pierce
patent: 3382333 (1968-05-01), Ihnacik, Jr.
patent: 3591051 (1971-07-01), Mitchell
patent: 3672732 (1972-06-01), Green
patent: 3916129 (1975-10-01), Cadeddu

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