Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-03-06
1987-12-22
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303115, 188181A, B60T 842, B60T 1370
Patent
active
047143010
ABSTRACT:
In a modulator assembly of the kind including a dump valve operable by skid sensor to cause closure of a valve to isolate a master cylinder from a brake and initiate operation of a pump, the modulator assembly incorporates a time-delay piston of differential outline working in a stepped bore in a housing. The piston is exposed a its end of smaller area to pressure in the master cylinder which is applied to the brake through a flow-control regulator valve and at its end of greater area to pressure in an expansion chamber through fixed outline . Equalization of the pressures acting on the piston causes the piston to move in a direction to open the regulator valve whereby to ensure that fluid from the master cylinder can flow to the brake at a rate faster than the rate at which it is returned from the brake by the pump.
REFERENCES:
patent: 4353440 (1982-10-01), Farr
patent: 4556260 (1985-12-01), Maemara
Kashnikow Andres
Lucas Industries Public Limited Company
Oberleitner Robert J.
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