Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-09-08
1988-03-22
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
60550, 60582, 303119, B60T 832
Patent
active
047324295
ABSTRACT:
A hydraulic brake system with slip control comprising a master cylinder (2) pressurizable by a hydraulic power booster (1). A booster sleeve (52) is provided which annularly encloses the booster piston (4), and which is slidably accommodated in the booster housing. The sleeve's end face directed towards the pressure chamber (10) of the booster (1) is applied by the pressure in the pressure chamber (10), while an annular chamber (59) filled with pressure medium and connected to a brake circuit (32) is constituted between the booster sleeve (52) with its head portion (61) and the bore (60) in the booster housing. The booster sleeve (52) is coupled to the booster piston (4) by way of a circlip (53) such that, on movement of the booster piston (4) in the direction of brake actuation, the booster sleeve (52) and the booster piston (4) will displace uniformly. On failure of the booster (1) and displacement of the booster piston (4) exclusively by way of the brake pedal (8), the booster sleeve (52) will remain in its initial position which brings about an abrupt change in ratio.
REFERENCES:
patent: 4440454 (1984-04-01), Belart et al.
patent: 4521061 (1985-06-01), Belart et al.
patent: 4555144 (1985-11-01), Belart et al.
patent: 4643488 (1987-02-01), Reinartz
Belart Juan
Ocvirk Norbert
Schonlau Juergen
Seibert Wolfram
Trach Guenter
Alfred Teves GmbH
Butler Douglas C.
Raden James B.
Seitter Robert P.
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