Lifting gear and testing it

Details Lifting gear and testing it Lifting gear and testing it

1986-11-03

1988-04-05

Levy, Stewart J.

Handling: hand and hoist-line implements

Grapple

Lewises

73831, 294 8153, B66C 112

Patent

active

047354500

ABSTRACT:
A lifting attachment for lifting a heavy load comprises a generally cylindrical member (7,30) which may be a post passing through a hole in the load, or a sleeve fitting over a post (6) fixed to the load. To retain a lifting sling, the member (7,30) has a radially projecting retaining flange (8), that extends circumferentially at least partly around it; the flange (8) has a curved shaped with wings (12) curving upwardly from its lowermost portion, so that an increasing amount of the flange (8) contacts the sling as the angle of approach of the sling to the sleeve becomes more acute. The flange (8) and member (7,30) may be a re-usable one-piece casting. Apparatus is also provided for test-loading the lifting attachment.

REFERENCES:
patent: 2748646 (1956-06-01), Harold et al.
patent: 3137051 (1964-06-01), Bethea
patent: 3342067 (1967-09-01), Bush
patent: 3626508 (1971-12-01), Sharrow
patent: 4074519 (1978-02-01), Garrett
patent: 4374473 (1983-02-01), Brockman
patent: 4478086 (1984-10-01), Gram

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