Automatically adjustable power jaw

摘要

An improved jaw apparatus is provided for making or breaking a tubular pipe connection. The jaw includes a head adapted to receive a hook having a threaded shank end. The threaded shank end is engaged at the head end opposite the hook end by a hydraulic powered nut adjustment assembly. The adjustment assembly may be operated by a control unit to allow for the automatic opening and closing of the jaw for receiving pipes of varying diameters.