Patent ID: 7197963

Claim:
An apparatus for clamping a drilling tubular comprising: a. a first grip and a second grip adapted to clamp the drilling tubular; b. a first grip block, housing the first grip, and a second grip block, housing the second grip, c. the first grip block is connected to a first arm by means of a first linkage and the second grip block is connected to a second arm by means of a second linkage; d. the first arm is operatively disposed within a slot disposed in a first guide, and the second arm is operatively disposed within a slot disposed within a second guide; e. the first linkage and the second linkage are adapted to move in a plane perpendicular to the drilling tubular to open and close the first grip and the second grip, enabling the first arm and the first linkage to simultaneously slide through the first guide and the second arm and the second linkage to simultaneously slide through the second guide; f. a double-push link connected to the first arm and the second arm, wherein the double-push link is adapted to move each grip in a plane perpendicular to the drilling tubular; and g. a drive means connected to the first arm and the second arm.