Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-08-12
1987-09-08
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303116, 303119, B60T 842
Patent
active
046919694
ABSTRACT:
An antiskid control system for a vehicle, comprises a gate valve device inserted in a braking hydraulic pressure transmission line disposed between a master cylinder device and a braking device and is provided with a valve mechanism receives a pressure fluid from a pressure accumulator and is arranged to close the braking hydraulic pressure transmission line and to initiate communication with the braking device through a branch line; an electromagnetic valve device including a first solenoid valve which is arranged to normally close a transmission pressure fluid supply line provided for supplying the pressure fluid from the accumulator to the gate valve device and to open the transmission pressure fluid supply line when the pressure of the braking device must be lowered and a second solenoid valve which is arranged to normally open a hydraulic pressure release line to release hydraulic pressure from the pressure fluid input chamber of the gate valve device to a reservoir and to close the release line when the pressure of the braking device must be lowered; and a braking hydraulic pressure control device including a control fluid chamber connected to the branch line coming from the gate valve device and a control piston arranged to increase or decrease the internal volume of the control chamber approximately in proportion to the value of the hydraulic pressure which is received from the pressure fluid input chamber of the gate valve device.
REFERENCES:
patent: 3741611 (1973-06-01), Depenheuer
patent: 4561701 (1985-12-01), Fujii et al.
Akebono Brake Industry Co. Ltd.
Reger Duane A.
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