Patent ID: 8496238
Filing Date: 2013-07-30
Classification: B25B,E21B,Y10T

Abstract:
1. A tubular gripping apparatus comprising: a jaw assembly having a tubular-contacting surface at an end thereof; a drive yoke having a tubular-contacting surface at an end thereof, the drive yoke being connected to the jaw assembly; a cylinder yoke having a nose positioned adjacent the drive yoke for movement relative thereto; an actuator connected to the cylinder yoke; a locking assembly interconnected between the cylinder yoke and the drive yoke, the locking assembly comprising a wedge assembly engaging the nose; the actuator moving the cylinder yoke into the wedge assembly which moves the drive yoke and jaw assembly such that the tubular-contacting surfaces move radially inwardly for a substantially identical distance; and, the locking assembly directing a load away from the actuator while the jaw assembly and the drive yoke grip the tubular, so as to prevent backward movement of the cylinder yoke.