Apparatus for lifting heavy equipment

Details Apparatus for lifting heavy equipment Apparatus for lifting heavy equipment

1991-01-16

1992-05-26

Focarino, Margaret A.

Handling: hand and hoist-line implements

Grapple

Expanding

294 8625, B66C 162, E21B 2500

Patent

active

051160951

ABSTRACT:
Running tool apparatus for lifting heavy equipment such as diverters and other devices utilizing a drilling rig drawworks. The running tool has a slotted discs and pins mechanism to cause engaging dogs to engage and disengage the heavy equipment when rotational force is applied. A keeper assembly mounted at the top of the running tool keys into an impression at the top of the heavy equipment to secure the outer body of the running tool with respect to the heavy equipment. The inner body is sealed with respect to the outer body and the tool is shaped so that the heavy equipment can be pressure tested with the running tool engaged in the bore of the heavy equipment.

REFERENCES:
patent: 812214 (1906-02-01), Law et al.
patent: 3307871 (1967-03-01), Russell et al.
patent: 4050731 (1977-09-01), Coone et al.
patent: 4277875 (1981-07-01), Worrell
patent: 4361353 (1982-11-01), Vinson
patent: 4666200 (1987-05-01), Walker et al.
patent: 4784398 (1988-11-01), Lund
Set of drawings and operating instructions for Hughes Running Tool, Jul. 1986.

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