Apparatus for actuating operating valve unit for winch

Details Apparatus for actuating operating valve unit for winch Apparatus for actuating operating valve unit for winch

1977-06-13

1980-01-29

Schwadron, Martin P.

Fluid handling

Systems

With selective motion for plural valve actuator

74471R, 74527, 251 89, 2541871, F16K 1118, F16K 3146

Patent

active

041856627

ABSTRACT:
An apparatus for actuating an operating valve unit for winch comprising a casing, a first shaft fixedly supported within said casing, second and third shafts rotatably supported within said casing, said second and third shafts being operatively connected with a hook lever and a boom lever, respectively. Said valve unit includes six valves for operating a hook clutch, a hook brake, a boom clutch, a boom brake, a lifting clutch, and a lower clutch, respectively.
First and second cams are slidably and rotatably mounted on said first shaft and a third cam is rotatably but not slidably mounted on said first shaft. Said first shaft is operatively connected with said second and third shafts, respectively, so as to selectively actuate said valves in response to operations of said hook lever and said boom lever.

REFERENCES:
patent: 2855958 (1958-10-01), Welty et al.
patent: 4054083 (1977-10-01), Utter
patent: 4067546 (1978-01-01), Matsuda et al.

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