Dual circuit braking system employing single load sensing valve

Details Dual circuit braking system employing single load sensing valve Dual circuit braking system employing single load sensing valve

1978-11-24

1980-12-02

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 22R, B60T 1300

Patent

active

042367611

ABSTRACT:
A fluid-pressure operated dual circuit braking system in which each circuit serves a rear axle brake and at least one front axle brake, one circuit only including a load sensing valve. The braking pressure in the other circuit is controlled by a relay valve in response to the modulated pressure from the load sensing valve. The relay valve includes a piston which is normally balanced but moves in the event of a failure in the circuit embodying the load sensing valve, to connect the unmodulated pressure in the relay valve circuit directly to the rear axle brakes.

REFERENCES:
patent: 2289559 (1942-07-01), Turek
patent: 3275381 (1966-09-01), Pfeifer
patent: 3674317 (1972-07-01), Mangold
patent: 3804468 (1974-04-01), Ishikawa et al.
patent: 3832015 (1974-08-01), Beck et al.
patent: 3944294 (1976-03-01), Masuda et al.
patent: 4040673 (1977-08-01), Ahaus et al.

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