Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1983-06-24
1985-06-04
Stoner, Jr., Bruce H.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
605471, 188181R, B60T 810, B60T 1300, B60T 812
Patent
active
045210616
ABSTRACT:
The hydraulic brake system with slip control comprises a master cylinder piston for operating a wheel brake, in which hydraulic medium tapped from the wheel brake during slip control will be supplied to the wheel brake from an auxiliary pressure source via a master cylinder gasket acting as check valve. The operating stroke of the master cylinder piston is limited by pressurization of a positioning piston through which a master cylinder piston rod is passed in a sealed manner and which is guided axially displaceable in a sealed manner in a housing. In order to prevent an abrupt movement of the positioning piston upon pressurization the positioning piston is constructed as a stepped piston whose smaller diameter is sealed with respect to the housing and having a piston step which in combination with the seal between the smaller diameter portion of the positioning piston and the housing annular chamber with a volume which is dependent on the pedal travel. The annular chamber has a throttling connection to the front surface of the positioning piston pressurized in case of slip control, which throttling connection has a check valve which opens towards the annular chamber.
REFERENCES:
patent: 3910643 (1975-10-01), Kobashi et al.
patent: 4354714 (1982-10-01), Belart
patent: 4440454 (1984-04-01), Belart et al.
Belart Juan
Burgdorf Jochen
Goossens Andre F. L.
Kircher Dieter
Weise Lutz
IT&T Industries, Inc.
Michals William J.
Oberleitner Robert J.
Raden James B.
Stoner Jr. Bruce H.
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