Power steering device for vehicles

Details Power steering device for vehicles Power steering device for vehicles

1978-10-17

1981-10-06

Silverstrim, John P.

Motor vehicles

Surface effect vehicles

Dynamic seal or fluid curtain

60405, 180143, B62D 508

Patent

active

042930510

ABSTRACT:
A power steering device for vehicles having a main hydraulic pump and a hydraulic motor type vehicle speed sensor, the number of rotation of which is regulated to be proportional to vehicle speed. In order to make a power steering system safe even when the main pump breaks down, and to warn the driver of trouble in the power steering system by the increase of resistance to the steering operation, an emergency switchover device is provided to alter a hydraulic motor functioning as the vehicle speed sensor to a substitute hydraulic power source when a main power source breaks down.

REFERENCES:
patent: 3613818 (1971-10-01), Schubert
patent: 3625240 (1971-12-01), MacDuff
patent: 3747725 (1973-07-01), Feustel
patent: 3964566 (1976-06-01), Smith
patent: 3994361 (1976-11-01), Nishikawa

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