Link engaging pipe elevator

Details Link engaging pipe elevator Link engaging pipe elevator

1982-08-30

1983-08-02

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Collar-engaging

175 85, B66C 142

Patent

active

043962165

ABSTRACT:
A link engaging pipe elevator is shown having link engaging arms and an automatic locking mechanism. Spring tension in the locking mechanism is overcome when the elevator body is rested on a substantially flat surface allowing unrestrained movement of the link engaging arms. As the elevator is lifted off the flat surface, the locking mechanism is activated and the link engaging arms are locked into place. A cam and cam roller assist in moving the link engaging arms between the full open and closed positions.

REFERENCES:
patent: 1834429 (1931-12-01), Smith
patent: 1917669 (1933-07-01), Smith
patent: 2215649 (1940-09-01), Mullinix
patent: 3063509 (1962-11-01), Guiel
patent: 3358341 (1967-12-01), Berstall

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