Swivel-mounted pneumatic-controlled releasing hook device

Details Swivel-mounted pneumatic-controlled releasing hook device Swivel-mounted pneumatic-controlled releasing hook device

1976-11-18

1978-06-20

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

B66C 138

Patent

active

040958337

ABSTRACT:
The hook portion of the device has unrestricted rotational freedom relative to a swivel connection for a suspension chain and air supply hose. The hook is released by the upward movement of a latch piston. To produce this release movement air pressure is introduced under the piston by an axial tube in the piston cylinder which penetrates the piston from the top while allowing both rotational and axial movements of the piston.

REFERENCES:
patent: 4007957 (1977-02-01), Roden
patent: 4034992 (1977-08-01), Epstein
patent: 4039219 (1977-08-01), Bagman

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