Hydraulic servo-mechanism

Details Hydraulic servo-mechanism Hydraulic servo-mechanism

1978-10-19

1981-02-10

Cohen, Irwin C.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91368, 91466, 13762569, F15B 910

Patent

active

042494559

ABSTRACT:
Hydraulic servo-mechanism having a housing in which is defined a cavity with an input member and an output member mounted coaxial therein and each supporting a single sprocket. In a bore of the housing having its axis perpendicular to that of the input and output members, a distribution spool is slidably disposed, with push rod and means facing its respective ends for imparting movement thereto. A double sprocket is rotatably mounted at each outer end of the respective push rod means. The housing rotatably supports another double sprocket which is disposed in substantially the same plane as the sprockets of the input and output members. A first chain meshes with the sprocket of the input member and a first set of the teeth of each of the double sprockets. A second chain meshes with the sprocket of the output member and a second set of the teeth of each of the double sprockets. The distribution spool controls fluid flow towards the compartments of a fluid motor for providing a power assistance to movement of the output member.

REFERENCES:
patent: 2761285 (1956-09-01), Beecroft
patent: 3280842 (1966-10-01), Weisenbach
patent: 3528454 (1970-09-01), Lewis

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