Patent ID: 7419008

Claim:
A power slip for releasably gripping a tubular comprising: a base plate; a top plate; one or more selectively actuated lift cylinders mounted between said base plate and said top plate for raising said top plate relative to said base plate; and at least two slip assemblies, each of said slip assemblies comprising: a slip linkage pivotally mounted to said top plate; a slip connector pivotally mounted to the slip linkage at one end and adapted at the other end for pivotally mounting to a slip segment for releasably gripping a tubular positioned between said slip assemblies; a pulley mounted to said top plate; and a cable having one end anchored to said base plate and the other end anchored to either the slip linkage or the slip connector, or to both the slip linkage and the slip connector, and passing over the pulley for pulling a slip segment up and back away from a tubular positioned between said slip assemblies when said top plate is raised relative to said base plate by actuating said lift cylinders.