Fluid-pressure and analogous brake systems – Inertia control
Patent
1980-04-30
1982-02-09
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Inertia control
303 24C, B60T 800
Patent
active
043147313
ABSTRACT:
A control valve assembly for a vehicle braking system comprises an inlet, an outlet, a valve having a pressure operated relay member movable to open and close the valve to control communication between the inlet and the outlet, and an inertia-responsive device, preferably a pendulum, responsive to deceleration of the vehicle and operable to reduce the pressure at the outlet after the valve has closed. The inertia-responsive device supplies a signal in dependence upon deceleration, and a servo system applies a force in opposition to the force on the relay member in response to the signal to move the relay member in a direction to reduce the outlet pressure. The servo system comprises an auxiliary valve operable in response to movement of the inertia-responsive device, a pressure operable member subjected to a pressure in dependence upon operation of the auxiliary valve, and an arrangement coupling the pressure operable member in force-transmitting relation with the relay member, whereby the relay member is subjected to a force which is dependent upon the vehicle deceleration.
REFERENCES:
patent: 3486800 (1969-12-01), Ayers, Jr.
patent: 3871713 (1975-03-01), Lister
patent: 3954307 (1976-05-01), Young
Butler Douglas C.
Girling Limited
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