Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1991-04-09
1993-01-19
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
303 241, B60T 828
Patent
active
051802120
ABSTRACT:
A brake pressure reducing valve assembly (1) includes first (2) and second (3) normally open valve sets each for controlling communication between respective associated inlet (4A,15) and outlet (4,16) chambers. The first valve set (2) is controlled by a brake pressure responsive piston (6) and a deceleration responsive member (7). The second valve set (3) is controlled by a pressure responsive piston (14). The respective pressure responsive pistons (6,14) are biased apart by a common compression spring (9). In use, the force applied to the piston (14) of the second valve set (3) by the spring (9) is determined by the position of the piston (6) of the first valve set (2) relative to the valve body. Accordingly the pressures at the outlet chambers (4,16) are maintained equal. The valve provides deceleration responsive brake pressure reduction to the rear brakes of a dual braking system without the need for two separate deceleration responsive members.
REFERENCES:
patent: 3727987 (1973-04-01), Shellhause
patent: 4050744 (1977-09-01), Nogami
patent: 4736989 (1988-04-01), Myers et al.
Lucas Industries Public Limited Company
Muratori Alfred
Oberleitner Robert J.
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