Fluid-pressure and analogous brake systems – Motorman's valves – Multiple motors
Patent
1989-06-27
1990-10-23
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Motorman's valves
Multiple motors
188358, 303 92, 303114, 303119, B60T 826, B60T 832, B60T 1312, B60T 844
Patent
active
049646761
ABSTRACT:
A fail safe control for a brake unit with an integral hydraulic brake booster for a road vehicle with a hydraulic dual-circuit braking system having a static front-axle brake circuit and a static rear-axle brake circuit connected respectively to primary and a secondary outlet-pressure space. The primary outlet-pressure space is delimited, by a piston element of the primary-piston arrangement and is in constant communicating connection with a second part space which is delimited by a secondary piston and by two piston elements which are displaceable relative to one another. One of these two piston elements is designed as an annular piston and the second as a plunger piston. A yoke-shaped first axial-force transmission element couples the primary piston with only one of the two piston elements. There is also a second axial-force transmission element coupling the other piston element with the drive piston and a third axial-force transmission element, via which a pedal force acts on the yoke-shaped axial-force transmission element upon failure of the brake booster.
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patent: 4850655 (1989-07-01), Takata et al.
Butler Douglas C.
Daimler-Benz Aktiengesellschaft
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