Power plants – Pressure fluid source and motor – Pulsator
Patent
1975-10-03
1976-09-07
Schwadron, Martin P.
Power plants
Pressure fluid source and motor
Pulsator
91391R, 188345, B60T 1320
Patent
active
039786692
ABSTRACT:
The arrangement comprises a brake valve for controlling servo pressure which is proportional to the actuating force at a brake pedal and first and second displacement pistons each actuating a different brake circuit. The second displacement piston is actuated on its rear surface under control of the brake valve by the servo pressure introduced into a chamber behind the second displacement piston. The chamber is defined by the second displacement piston and an ancillary piston in a common housing bore. The ancillary piston has connected to its surface remote from the second displacement piston a tappet which in its end position rests against a housing stop. The first displacement piston is actuated by a balance arm, which is pivotably supported by the first displacement piston and the tappet, and a force transmitting member which is displaced by servo pressure when the servo pressure is present. The force transmitting member, in the event of failure of servo pressure, is actuated by the driver's pedal effort directly to actuate the balance arm and, hence, the first and second displacement pistons.
REFERENCES:
patent: 2282472 (1942-05-01), Herman et al.
patent: 2472695 (1949-06-01), Chouings
patent: 3064431 (1962-11-01), Schnell
patent: 3751912 (1973-08-01), Bach
Burks, Sr. H.
Hill Alfred C.
IT&T Industries, Inc.
O'Halloran John T.
Schwadron Martin P.
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