Power plants – Pressure fluid source and motor – Pulsator
Patent
1981-03-18
1983-09-20
Hershkovitz, Abraham
Power plants
Pressure fluid source and motor
Pulsator
60563, 60565, 60591, 303 2, 303 13, B60T 1300
Patent
active
044048033
ABSTRACT:
A brake unit comprising a hydraulic booster unit connected to hydraulic auxiliary energy and controllable by a brake pedal via a control piston drives a master brake cylinder unit to supply brake pressure to wheel brake cylinders through at least one hydraulic line connected to an output of the master brake cylinder unit. A bypass line connected to the work chamber of the booster unit supplies a preliminary feed of the auxiliary energy to the wheel brake cylinders to overcome the brake clearance. A two way, two position changeover valve is connected to the hydraulic line, the bypass line and the wheel brake cylinders to connect during a braking operation either the bypass line or the hydraulic line to the wheel brake cylinders dependent on the pressure in the two lines. This brake unit requires only a few hydraulic connections external of the unit, has a single construction, has small dimensions, has exact operation and has quick response.
REFERENCES:
patent: 2799140 (1957-07-01), Osborne
patent: 3712057 (1973-01-01), Aiki
patent: 3727986 (1973-04-01), Koirunen
patent: 3787147 (1974-01-01), McClocklin
patent: 4050251 (1977-09-01), Carre
patent: 4126996 (1978-11-01), Leiber
patent: 4208872 (1980-06-01), Shimizu
patent: 4225022 (1980-09-01), Belart
Hershkovitz Abraham
Hill Alfred C.
IT&T Industries, Inc.
O'Halloran John T.
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