Elevator for casing

Details Elevator for casing Elevator for casing

1981-08-11

1984-04-10

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294 90, B66C 142, E21B 1902

Patent

active

044417497

ABSTRACT:
An elevator for casing pullers with elevator links adapted for motorized opening and for the lateral approach to a casing which is to be pulled. One of the elevator links is constructed as a hook, into which a locking bolt of a power jack can be pivoted, which said power jack is copivotingly secured on the second movable elevator link and closes the elevator by retraction of the locking bolt.

REFERENCES:
patent: 2695189 (1954-11-01), Chrisman et al.

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