Power plants – Pressure fluid source and motor – Pulsator
Patent
1985-05-17
1988-09-27
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Pulsator
60578, 60593, 60586, 92 5R, 188 111, 1376275, 91461, B60T 1722, F15B 1518, F16D 6300, F16K 3112
Patent
active
047732229
ABSTRACT:
A pneumatic-hydraulic booster for vehicle includes a master cylinder part; a pneumatic cylinder part combined with the master cylinder part which includes a power piston slidable fitted to a cylindrical casing and an output rod fixed to the power piston, extending to the master cylinder part; a partition wall body fitted to the cylindrical casing; and a relay valve part arranged at the opposite side of the partition wall body from the power piston in the cylindrical casing. The relay valve supplies compressed air into an air pressure chamber formed between the partition wall body and the power piston and discharges the compressed air from the air pressure chamber to the atmosphere. When compressed air is suppplied into the air pressure chamber through the relay valve part the power piston and the output rod are moved forwards to generate hydraulic pressure in the master cylinder. The hydraulic pressure is applied to a wheel cylinder for braking. The cylindrical casing is open at the side of the partition wall body opposite to the power piston, and a cover member is fixed to the cylindrical casing by a fixing member bolt. The relay valve part sits between the cover member and the partition wall body.
REFERENCES:
patent: 2832316 (1958-04-01), Ingres
patent: 2957454 (1960-10-01), Stelzer
patent: 3106874 (1963-10-01), Schultz
patent: 3259146 (1966-07-01), Hager
patent: 3712340 (1973-01-01), Deem
patent: 4316529 (1982-02-01), Yanagawa et al.
patent: 4445334 (1984-05-01), Derrick
Tanaka Masakatsu
Totoki Hirohisa
Garrett Robert E.
Kapsalas George
Nippon Air Brake Co., Ltd.
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