Power-assisted steering apparatus

Details Power-assisted steering apparatus Power-assisted steering apparatus

1989-06-23

1990-07-10

Marmor, Charles A.

Motor vehicles

Surface effect vehicles

Dynamic seal or fluid curtain

180148, 92166, 92167, B62D 506

Patent

active

049401041

ABSTRACT:
A power-assisted steering apparatus of the type which includes a control valve arranged to control hydraulic fluid under pressure supplied to a hydraulic power cylinder from a hydraulic pump therethrough in response to the driver's steering effort applied thereto, the power cylinder having a piston mounted therein for reciprocating movement and a piston rod supporting thereon the piston for movement therewith and extending outwardly from the cylinder in opposite directions. In the steering apparatus, a pair of axially spaced cylindrical reaction pistons are slidably mounted on the piston rod at the both sides of the power cylinder piston in such a manner as to be engageable at their inner ends with a pair of axially spaced internal end walls of the cylinder and at their outer ends with a pair of axially spaced retainer members on the piston rod when the power cylinder piston is retained in a neutral position.

REFERENCES:
patent: 3293994 (1966-12-01), Napolitano
patent: 4127186 (1978-11-01), Koyano et al.
patent: 4248138 (1981-02-01), Akkerman

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