Vehicle car steering system

Details Vehicle car steering system Vehicle car steering system

1986-10-20

1987-12-08

Love, John J.

Motor vehicles

Surface effect vehicles

Dynamic seal or fluid curtain

91375R, 91382, B62D 5083

Patent

active

047113154

ABSTRACT:
A hydraulic power assisted vehicle steering system having an input member connected with a manual steering wheel to be rotated thereby, an output member coaxial with the input member and connected with a vehicle steering mechanism, a torsion bar connecting the input member with the output member, a hydraulic power assist cylinder provided in the vehicle steering mechanism, a control valve for selectively applying a hydraulic pressure to the cylinder to produce a hydraulic assist force. The control valve includes a valve member connected with the output member for limited axial displacements. A locking device is provided to lock the vlave member at a position offset from a neutral position to hydraulically bias the cylinder when the input member is steered beyond a predetermined value so that a centering or restoring force is produced to provide a self centering function.

REFERENCES:
patent: 4421010 (1983-12-01), Elser
patent: 4421011 (1983-12-01), Elser
patent: 4465101 (1984-08-01), Hasegawa
patent: 4595071 (1986-06-01), Mehren

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