Hydraulic power steering

Details Hydraulic power steering Hydraulic power steering

1997-05-01

1999-04-13

Boehler, Anne Marie

Motor vehicles

Steering gear

No mechanical connection between steering shaft and steering...

180417, 91 31, 91DIG2, B62D 506

Patent

active

058934286

ABSTRACT:
In a hydraulic power steering for a motor vehicle with a hydraulic servomotor and a servovalve arrangement in communication with opposite servomotor actuating chambers by way of separate communication conduits through which the actuating chambers can be pressurized or depressurized for the operation of the servomotor depending on a force applied by an operator to a steering means, the communication conduits include valve arrangements permitting, when they are open, the release of hydraulic fluid from the actuating chambers but blocking the release of hydraulic fluid when they are closed thereby hydraulically locking the power steering.

REFERENCES:
patent: 4549468 (1985-10-01), Trintignac et al.
patent: 4664210 (1987-05-01), Yamaoka et al.
patent: 4917001 (1990-04-01), Yoshikawa et al.
patent: 5147007 (1992-09-01), Kahrs et al.
patent: 5184691 (1993-02-01), Leutner

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