Fluid power steering system with valve operator control means

Details Fluid power steering system with valve operator control means Fluid power steering system with valve operator control means

1973-05-07

1976-02-24

Schwadron, Martin P.

Motors: expansible chamber type

With alternative manual actuation of load

Alternate pedal positions

91372, 91375A, 91434, 91438, 91441, 91465, 137636, F15B 1310, F15B 1108, F15B 1304

Patent

active

039397572

ABSTRACT:
The steering wheel controlled valve operator in a fluid power steering system, is mechanically held in a neutral position by centering springs associated with fluid pressure controlled reaction pistons yieldably resisting movement of the control valve by the valve operator. Check valves opened in response to suction pressure, conduct fluid in by-pass relation to the control valve between a servo motor chamber and a return fluid line, the control valve connecting both servo motor chambers to the return line in the neutral position.

REFERENCES:
patent: 2063937 (1936-12-01), Kundig
patent: 2462544 (1949-02-01), Parker
patent: 2781781 (1957-02-01), Hruska
patent: 2904957 (1959-09-01), Quayle
patent: 2930357 (1960-03-01), Brueder
patent: 2934089 (1960-04-01), Meyers
patent: 3213762 (1965-10-01), Dubuf
patent: 3353554 (1967-11-01), Ludkin
patent: 3460440 (1969-08-01), Brent
patent: 3464318 (1969-09-01), Thayer et al.
patent: 3469890 (1969-09-01), Fulmer
patent: 3473443 (1969-10-01), Mikkelsen
patent: 3601153 (1971-08-01), Page et al.
patent: 3630233 (1971-12-01), Miyamoto
patent: 3638678 (1972-02-01), Symmons
patent: 3657967 (1972-04-01), Suzuki
patent: 3772962 (1973-11-01), Suzuki
patent: 3777839 (1973-12-01), Uchiyama et al.

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