Pipe lifting hook having clamp assembly

Details Pipe lifting hook having clamp assembly Pipe lifting hook having clamp assembly

1981-12-03

1984-06-12

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Fixed and moveable jaw

B66C 144

Patent

active

044537581

ABSTRACT:
A pipe lifting hook is provided having a generally "C" shaped hook member having an elongated lower portion being insertable within the end of a joint of pipe and having an upper portion positionable above the pipe and provided with lifting connection means. The hook member is frictionally clamped to the pipe by grip shoe means that is movably supported by the upper portion of the hook member and is selectably movable from a released position out of contact with said pipe to a locked position in frictional locking engagement with the outer surface of the pipe. A ratchet mechanism couples said grip shoe means to the upper portion of the hook member and is manually positionable to lock said grip shoe means at said locked position or release said grip shoe means for movement toward said released position thereof.

REFERENCES:
patent: 2654629 (1953-10-01), Renfroe
patent: 3171178 (1965-03-01), Smith et al.

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