Power steering device for wheeled vehicles

Details Power steering device for wheeled vehicles Power steering device for wheeled vehicles

Filed on

1979-08-21

Date issued

1981-07-21

Examiner

Reese, Randolph A.

Patent Class

Motor vehicles

SubClass

Including one or more ski-like or runner members

SubSubClass

With at least one surface-engaging propulsion element

Other Related Categories

74388PS, B62D 506

Type

Patent

Status

active

Patent number

042793238

Description

ABSTRACT:
A power steering device includes a steering shaft assembly, a driven member for operative connection with the steering road wheels for a vehicle and operatively connected with the steering shaft assembly, an hydraulic cylinder of actuating the driven member by fluid under pressure supplied thereto, an hydraulic circuit connecting the cylinder to a source of fluid pressure, and a switching valve having a valve member to be moved in response to rotation of the shaft assembly in an axial direction, the valve disposed within the hydraulic circuit to control the supply of fluid under pressure in response to axial movement of the valve being member. A cam mechanism is associated with the steering shaft assembly to conduct the axial movement of the valve member in response to rotation of the steering shaft assembly.

REFERENCES:
patent: 2826258 (1958-03-01), Livers
patent: 3292499 (1966-12-01), Duffy
patent: 3481147 (1969-12-01), Goff
patent: 3645296 (1972-02-01), Adams
patent: 3973640 (1976-08-01), Nismikawa

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