Hydraulic power steering valve with three-orifice reactive chamb

Details Hydraulic power steering valve with three-orifice reactive chamb Hydraulic power steering valve with three-orifice reactive chamb

1988-04-13

1989-02-14

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91380, 91434, 180143, B62D 506, B62D 508, F15B 1314

Patent

active

048039136

ABSTRACT:
A power steering system for use in a motor has a pair of reactive pressure chambers in which the opposite ends of a valve spool are exposed, one of the reactive pressure chambers communicating with one fluid-pressure chamber in a reciprocable fluid-pressure cylinder assembly through a first orifice, the other reactive pressure chamber communicating with both fluid-pressure chambers in the cylinder assembly through second and third orifices, respectively. The first, second and third orifices are the first and second orifices are defined in the valve spool. A third passage define by a space between the spool and the valve cylinder communicates the first and third orifices.

REFERENCES:
patent: 3602101 (1971-08-01), Jablonsky et al.
patent: 3719124 (1973-03-01), Katz et al.
patent: 4249456 (1981-02-01), Luckel et al.
patent: 4438827 (1984-03-01), Lang

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