Power steering apparatus for a vehicle

Details Power steering apparatus for a vehicle Power steering apparatus for a vehicle

1977-12-08

1979-05-15

Peters, Jr., Joseph F.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

91434, B62D 508

Patent

active

041543173

ABSTRACT:
A power steering apparatus for a vehicle comprising a center open type changeover valve which, on turning of a steering shaft, is moved to be changed over from a neutral straight running position to either of left and right steering positions so that an oil supply passage connected to an operation oil pressure source and an oil discharge passage connected to a return tank are selectively and respectively connected to the left and right chambers of a power cylinder. On one side of the changeover valve is at least one oil pressure reaction chamber which is connected through an oil passage to the oil supply passage to urge the changeover valve to return to its neutral straight running position on the changeover movement of the changeover valve in either direction. The operation oil pressure source is so constructed to provide increased delivery amount according to increase of vehicle speed. A throttle is interposed in the oil supply passage downstream of the connecting point of the oil supply passage with the oil passage to the reaction chamber.

REFERENCES:
patent: 3994361 (1976-11-01), Nishikawa

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