Power plants – Pressure fluid source and motor – Pulsator
Patent
1987-09-08
1992-03-10
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Pulsator
91401, 91422, B60T 1112, F15B 1518
Patent
active
050940813
ABSTRACT:
A hydraulic vehicle brake system of the type having a high system return pressure is provided. In order to minimize the size and strength of brake return springs required, the invention provides a device to be interposed between the brake and the brake control valve. Preferred embodiments of the device include an inlet port communicating with a brake valve and an outlet port communicating fluid pressure to a vehicle brake. A control assembly is provided intermediate the inlet and outlet ports and includes mechanisms for amplifying the hydraulic pressure effect in the direction from the outlet port to the return pressure system so that the brake return pressure exerted by the brake return springs can be substantially less than the hydraulic system return pressure.
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Garrett Robert E.
Kapsalas George
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