Power steering apparatus for a vehicle

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

1975-08-06

1977-01-04

Peters, 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

040007855

ABSTRACT:
Power steering apparatus comprising a displaceable changeover value operated in one direction or the other by turning of a steering shaft so that an oil supply passage connected to an oil pressure pump is placed into communication with either a right chamber or a left chamber of a power cylinder. At least one external oil pressure reaction chamber is arranged to be reduced in volume by the operation in either direction of the changeover valve, the oil pressure reaction chamber being in communication through a first throttle with the oil supply passage and through a second throttle with an exterior oil tank. At least one of the two throttles is variable in size in proportion to vehicle speed so that the ratio of the area of opening of the first throttle relative to the second throttle can be increased according to increase of vehicle speed.

REFERENCES:
patent: 2893504 (1959-07-01), Jackson
patent: 3677140 (1972-07-01), Brown
patent: 3692137 (1972-09-01), Inoue
B310,149, Jan. 1975, Sugisawa, 180/143.

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