Patent ID: 9097072
Filing Date: 2015-08-04
Classification: E21B

Abstract:
1. A pipe spinner comprising: a case having a stationary case member and a moving arm case member pivotally coupled to the stationary member; a gear rack mounted to the case; a moveable drive assembly capable of meshing with the gear rack; a continuous chain engaged by the drive assembly for rotating a pipe in an operative position relative to the case; an adjusting assembly mounted on the stationary member of the case alongside the gear rack where the adjusting assembly automatically translates the drive assembly along the gear rack upon the actuation of an adjustment sequence and where the moving arm case member is automatically moved toward and away from the stationary case member independent of the adjusting assembly; and the adjusting assembly includes a pivot arm mounted to a pivot mount, the pivot arm having a first and second end and being mounted at its first end to an adjusting actuator and at its second end to a slide pin coupled to the drive assembly such that the slide pin is slidably engaged with an elongated slot on the second end of the pivot arm.