Hydraulically operated power steering system

Details Hydraulically operated power steering system Hydraulically operated power steering system

1990-01-31

1991-09-03

Marmor, Charles A.

Motor vehicles

Surface effect vehicles

Dynamic seal or fluid curtain

180146, 74388PS, B62D 5087

Patent

active

050444565

ABSTRACT:
A power steering system is provided in which the rack portion of the power piston is strengthened while still shortening the axial length of the power piston associated therewith. This is accomplished by providing a control valve which includes a valve lever received in a power piston of the device which is relatively rotatable with respect to the power piston and moves in an axial direction of the housing with the power piston in response to rotation from an input shaft connected with the steering wheel. The valve lever has an engaging portion which projects outside of the power piston so as to be connected therewith when the valve reciprocates. The reciprocation of the valve will assist in the operation of the power steering unit and provide the power assist. The valve lever has a portion engageable with a pin member received in the valve spool of the control valve so as to reciprocate the control valve. This arrangement permits the rack portion of the power steering unit to be provided with increased strength even though the axial length of the power piston is decreased and the rack and valve operating lever are positioned on the same side of the power steering unit and still permits the size of the system to be decreased.

REFERENCES:
patent: 4421011 (1983-12-01), Elser

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