Power steering apparatus

Details Power steering apparatus Power steering apparatus

1974-12-27

1976-04-06

Song, Robert R.

Motor vehicles

Compensating devices

91437, 91458, B62D 508

Patent

active

039483380

ABSTRACT:
A power steering apparatus for a vehicle comprising: a hydraulic actuator for supplementing manual steering torque; a first valve means for controlling directions of pressure fluid supplied to the hydraulic actuator in response to manual steering; a second valve means for reducing the supplementing force of the hydraulic actuator by by-passing the pressure fluid; a vehicle speed detecting means for detecting the cruising speed of the vehicle; first switching means responsive to the vehicle speed detecting means for supplying electric energy to the second valve means when the cruising speed exceeds a predetermined value; and second switching means for decreasing electric energy supplied to the second valve means when the second valve means starts to by-pass the pressure fluid.

REFERENCES:
patent: 2221365 (1940-11-01), Ware
patent: 2341502 (1944-02-01), Ingres
patent: 2364917 (1944-12-01), Ray
patent: 3693747 (1972-09-01), Inoue
patent: 3744515 (1973-07-01), Inove
patent: B310149 (1975-01-01), Sugisawa

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