Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1982-10-26
1984-10-02
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
B60T 8087
Patent
active
044744137
ABSTRACT:
In an hydraulic anti-skid braking system for a vehicle a supply of fluid from a master cylinder is modulated by a modulator assembly in accordance with skid signals from a skid sensing means device, and an hydraulic pump incorporating at least one plunger has a working chamber in communication with the modulator assembly to control brake re-application following skid correction. The modulator assembly incorporates a piston which is normally urged into an advanced inoperative position against a stop by a spring, in which position the piston holds a spring-loaded valve in an open position to place the master cylinder in communication with the brake. Support and expander chambers on opposite sides of the piston are interconnected at all times by a restricted passage with the support chamber defined in a bore in which the piston is guided to slide, between the piston and normally closed dump valve. Thus the position of the piston in the bore is determined by the loading in the spring either augmented or opposed by a force applied to the piston due to any pressure drop across the restricted passage.
REFERENCES:
patent: 4387934 (1983-06-01), Farr
Lucas Industries Public Limited Company
Reger Duane A.
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