Apparatus for lifting heavy equipment
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United States of America Patent
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May 26, 1992
Grant Date -
N/A
app pub date -
Jan 16, 1991
filing date -
Jan 16, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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