Lock and lift tool

Details Lock and lift tool Lock and lift tool

1999-12-13

2000-10-17

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Expanding

294 89, B66C 166

Patent

active

061319767

ABSTRACT:
A tool for quickly coupling a crane hook to a dovetailed socket attached to a load consists of a heavy frame with a plate that pivots out on bushings near the lower end of the frame. Both the frame and pivoting plate have outward slanting surfaces at the lower ends that engage the dovetailed socket when the plate is pivoted up against the frame and they are locked together by a crane hook passing through aligned holes through both the plate and frame.

REFERENCES:
patent: 956938 (1910-05-01), Ciardelli
patent: 1851116 (1932-03-01), Spiro
patent: 1938485 (1933-12-01), Cossor
patent: 2404775 (1946-07-01), Ehmann
patent: 4304432 (1981-12-01), Silva
patent: 4575144 (1986-03-01), Silva et al.

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