Hydraulic reaction mechanism for power steering system

Details Hydraulic reaction mechanism for power steering system Hydraulic reaction mechanism for power steering system

1986-07-18

1988-04-26

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

1376252A, 91375A, F15B 910

Patent

active

047396938

ABSTRACT:
There is disclosed a hydraulic reaction mechanism which is easy to manufacture and for use with an automotive power steering system. The mechanism has an input shaft and an output shaft which are rotatable relative to each other and mounted in a housing. A servovalve is mounted between the shafts and actuated in response to the relative movement between the shafts. Radially protruding portions are formed at the end of the input shaft that is on the side of the output shaft. The output shaft has an enlarged portion provided with cylinder holes in which reaction pistons are received. The pistons hydraulically push both sides of the radially protruding portions. The pistons have grooves in which retaining plates for restricting rearward movement of the pistons are engaged.

REFERENCES:
patent: 3407844 (1968-10-01), Linser
patent: 3669146 (1972-06-01), Adams
patent: 3877540 (1975-04-01), Masuda et al.
patent: 4034825 (1977-07-01), Adams
patent: 4434866 (1984-05-01), Duffy
patent: 4601358 (1986-07-01), Kozuka et al.

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