Mechanical centering mechanism for rotary valve power steering s

Details Mechanical centering mechanism for rotary valve power steering s Mechanical centering mechanism for rotary valve power steering s

1992-05-07

1993-08-10

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91371, 180143, F15B 910

Patent

active

052339068

ABSTRACT:
A hydraulic power steering rotary valve of generally conventional construction characterized in that the on-center characteristics of the valve are governed by an arrangement of rolling elements and pairs of notched elements arranged to produce a detent action between the input shaft and the sleeve or driven member. One notched element of each pair is fixed to a carrier which is connected to the sleeve or driven member by a securing device. During assembly, the carrier is free to move under the influence of springs acting on the notched elements and thereby take up a position such that after completion of assembly the notched elements and rolling elements are precisely in the correct position to provide the required detent action.

REFERENCES:
patent: 4819545 (1989-04-01), Dymond
patent: 4966192 (1990-10-01), Umeda
patent: 5016723 (1991-05-01), Sano
patent: 5046574 (1991-09-01), Goodrich et al.

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