Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1993-12-03
1995-07-25
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
3031154, 3031191, 3031171, B60T 832
Patent
active
054356369
ABSTRACT:
An antiskid brake apparatus for a vehicle comprises a braking mechanism for braking wheels of a vehicle, a master cylinder assembly operated in response to a brake operation force and adapted to brake the wheels through the braking mechanism, a sensor for detecting a rotating speed of the wheels, a direction control valve disposed on a fluid passage connecting the master cylinder assembly and the braking mechanism, a pressure reducing cylinder assembly which is operatively connected to the direction control valve, a pump unit connected through a fluid passage between the master cylinder assembly and the pressure reducing cylinder assembly for returning the hydraulic oil from the pressure reducing cylinder assembly to the master cylinder assembly, and a control unit for detecting a sign of locking of the wheels in accordance with an input from the sensor. The pressure reducing cylinder assembly has a capacity smaller than a hydraulic oil discharge capacity corresponding to a full stroke of the master cylinder assembly. A pressure cut valve is further connected to the master cylinder assembly and the pump unit through fluid passages for cutting a pump pressure of the pump unit with respect to the master cylinder assembly and the pressure cut valve is operatively connected to the braking mechanism through a fluid passage.
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patent: 5281010 (1994-01-01), Brown
patent: 5288142 (1994-02-01), Burgdorf
patent: 5290098 (1994-03-01), Burgdorf et al.
Butler Douglas C.
Kananen Ronald P.
Suzuki Kabushiki Kaisha
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