Automatic safety latch lift hook unit

Details Automatic safety latch lift hook unit Automatic safety latch lift hook unit

1976-06-23

1977-08-02

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

24241PL, 24242, B66C 136

Patent

active

040392198

ABSTRACT:
A lift hook unit is described having a hook element swiveled to a supporting yoke; the hook element has a safety latch which is automatically movable from a normal open position to a closed position upon loading of the hook and is automatically returnable to open condition upon relaxing the load. A manual handle enables manual movement and guidance of the hook element in various directions as needed.

REFERENCES:
patent: 1545377 (1925-07-01), Westmoreland
patent: 3008210 (1961-11-01), Stovern
patent: 3811158 (1974-05-01), Merser
Engineering News, June 17, 1915.

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