Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1985-04-10
1986-07-15
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303114, 303119, B60T 806
Patent
active
046002456
ABSTRACT:
A liquid pressure control device for an anti-lock brake system is provided. The device includes a control valve which intermittently interrupts the liquid pressure feed from a master cylinder to a wheel cylinder, a liquid pressure control piston which moves in such a manner as to control the liquid pressure to the wheel cylinder, a differential pressure-responding member which closes the control valve and moves the liquid pressure control piston in conjunction with its forward motion, a stopper arranged engageably with the differential pressure-responding member located in its initial position, and a gas pressure chamber and liquid chamber, which produce the pressure difference acting on the differential pressure-responding member. The gas pressure chamber is charged with gas, the gas pressure of which is used to return the differential pressure-responding member to its initial position during the non-braking and normal braking condition, while the liquid chamber receives an input of controlling liquid pressure which acts against the gas pressure in the gas pressure chamber during the anti-lock action, so as to make the differential pressure-responding member shift forwards. During non-braking and normal braking conditions, the stopper is engaged with the differential pressure-responding member to inhibit its forward motion and disengaged therefrom during the anti-lock action, so as to allow its forward motion.
REFERENCES:
patent: 2868338 (1959-01-01), Lucien et al.
patent: 4017126 (1977-04-01), Ohta
patent: 4422695 (1983-12-01), Farr
Reger Duane A.
Watanabe Engineering Kabushikigaisha
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