Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1980-03-31
1981-07-21
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188349, 30322R, B60T 802
Patent
active
042794480
ABSTRACT:
Brake power control units for two-circuit brake systems are known in which a control piston and a locking piston are provided. The control piston reduces the brake pressure of the rear axle brake circuit in relation to the brake pressure of the front axle brake circuit and the locking piston acts on the control valve in the case of failure of the front axle brake circuit in such a way that the reducing effect for the rear axle brake pressure is neutralized. The two pistons of this known unit are arranged one behind the other which requires a great overall length for the control unit. According to the present invention, the overall length of the control unit is reduced by disposing the two pistons coaxial with respect to each other with the control piston enclosing the locking piston.
REFERENCES:
patent: 3441318 (1969-04-01), Bueler
patent: 3608977 (1971-09-01), Kersting
Butler Douglas C.
Hill Alfred C.
IT&T Industries, Inc.
O'Halloran John T.
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