Fluid-pressure and analogous brake systems – Pipeless valves
Patent
1985-10-04
1987-07-07
Reger, Duane A.
Fluid-pressure and analogous brake systems
Pipeless valves
60582, 303114, B60T 1368
Patent
active
046782427
ABSTRACT:
A hydraulic vehicle brake system with anti-locking, wherein a braking pressure generator (25) comprising a hydraulic power booster (26) and a master cylinder (27) connected downstream thereof is employed for the pressure supply of the brake circuits. Wheel brakes (37, 34) are connected to the pressurizable working chambers (31, 32) of the braking pressure generator (25) by way of first valves (33, 36), while the working chambers (31, 32) are connectible with an auxiliary pressure source (1) by way of second valves (46, 146). A third valve (60) is interposed between the auxiliary pressure source (1) and the second valves (46, 146), which can be switched to assume an open position in response to a pedal contact (6) and sufficient pressure of the auxiliary pressure source (1). The second valves (46, 146) are designed as double seat valves of the same kind, each including a piston (53, 153) which is slidable by the pressure in the respective brake circuit and which causes, in the brake pedal's release position, a hydraulic connection between the respective working chamber and an unpressurized supply reservoir (4). Upon a failure of one brake circuit, the anti-locking function will be maintained in the other brake circuits because each brake circuit has its own second valve.
REFERENCES:
patent: 4530209 (1985-07-01), Steffes
patent: 4586591 (1986-05-01), Belart
Alfred Teves GmbH
Michals William J.
Raden James B.
Reger Duane A.
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