Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1988-01-13
1989-08-08
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303111, 303 92, B60T 834, B60T 864, B60T 888
Patent
active
048546496
ABSTRACT:
An anti-skid control apparatus includes a master cylinder, a fluid pressure control valve for controlling fluid pressures of wheel cylinders connected to one of two brake conduit circuits, and a valve apparatus for controlling fluid pressure of wheel cylinders connected to the other of the two brake conduit circuits. The valve apparatus includes a casing having first and second input ports, an output port, a piston, a control chamber and a volume chamber formed at both sides of the piston. A valve part is disposed between the first input port and the volume chamber, the first input port being connected to one fluid pressure generating chamber of the master cylinder and the output port being connected to the wheel cylinders that are connected to the other of the two brake conduit circuits. A changeover valve is connected to the second input port. The changeover valve is set either in a first position for connecting another fluid pressure generating chamber of the master cylinder to the control chamber or else a second position for connecting the output side of the fluid pressure control valve with the control chamber. When the changeover valve is in the first position, the valve part is open, and when the changeover valve is in the second position and the fluid pressure control valve is operated, the piston is moved toward the control chamber to close the valve part so as to cut off the first input port from the volume chamber and change the volume of the volume chamber.
REFERENCES:
patent: 3532391 (1970-10-01), Klein
patent: 3674317 (1972-07-01), Mangold
patent: 3756666 (1973-09-01), Leiber
patent: 3866983 (1975-02-01), Kondo
patent: 3871713 (1975-03-01), Lister
patent: 3874745 (1975-04-01), Peruglia et al.
patent: 3980346 (1976-09-01), Leiber
patent: 4033638 (1977-07-01), Bertone et al.
patent: 4229049 (1930-10-01), Ando
patent: 4602824 (1986-07-01), Nishimura et al.
Kashnikow Andres
Newholm Timothy
Nippon A B S Ltd.
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