Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-08-27
1988-03-15
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303119, B60T 832, B60T 844, B60T 848, B60T 1312
Patent
active
047308788
ABSTRACT:
A hydraulic skid-controlled brake system comprising a master cylinder (2) pressurizable by a hydraulic force booster (1). The master cylinder piston (5) is provided as a stepped piston, with the small piston step (14) cooperating with the booster piston (4) traversing an annular chamber (19). The large piston step (15) plunges into the annular chamber (19). When the brakes are applied, the pressure fluid flows from a brake circuit (22, 31) into the annular chamber (19) by way of a first pressure fluid conduit (18, 21) and in which a blocking valve (26) is provided. By way of a second pressure fluid conduit (33, 34, 47, 36) the pressure fluid flows from the annular chamber (19) into an intake reservoir (11) in which a current control valve including a blocking slide (35) is provided. The connection (33) to the annular chamber (19), in the brake releasing position, is closed by the large step (15) of the master cylinder piston (5 ). A defined resetting movement of the master cylinder piston (5), during the skid control, is achieved by blocking the two pressure fluid conduits.
REFERENCES:
patent: 4416491 (1983-11-01), Belart et al.
patent: 4634190 (1987-01-01), Wupper
patent: 4660898 (1987-04-01), Steffes
patent: 4662688 (1987-05-01), Reinartz
Reninartz Hans D.
Steffes Helmut
Alfred Teves GmbH
Butler Douglas C.
Raden James B.
Seitter Robert P.
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