Power plants – Pressure fluid source and motor – Pulsator
Patent
1976-08-02
1978-05-09
Schwadron, Martin P.
Power plants
Pressure fluid source and motor
Pulsator
60553, 60550, 91391R, 91413, B60T 1312
Patent
active
040879720
ABSTRACT:
A motor vehicle fluid power circuit is provided with a constant displacement pump, a control valve, an open center steering valve, and a brake booster with a spring type ratio changer. The brake booster includes an input rod which is connected to a brake pedal of the vehicle and an output rod which is connected to the brake master cylinder of the vehicle. One predetermined ratio of input rod movement to output rod movement is established under normal operating conditions, and a one-to-one ratio is established under emergency conditions when sufficient pressure from the pump is not available for the brake booster.
REFERENCES:
patent: 2517005 (1950-08-01), MacDuff
patent: 2844941 (1958-07-01), Ayers, Jr.
patent: 3050944 (1962-08-01), Schwartz
patent: 3119235 (1964-01-01), Lewis
patent: 3712057 (1973-01-01), Aiki
patent: 3751919 (1973-08-01), Ron
patent: 3774635 (1973-11-01), Farrell
patent: 3946564 (1976-03-01), Nakagawa
Hershkovitz Abraham
Schwadron Martin P.
The Weatherhead Company
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