Patent ID: 7021180
Filing Date: 2006-04-04
Classification: B23P,B25B

Abstract:
1. A torque applying tool comprising a torque wrench or nutrunner having handle means and a drive head for torque output, and means for sensing the output torque applied by the drive head; wherein the drive head is located at one end of a hollow quill shaft an outer diameter of which is splined to receive a torque drive input from the handle at a location axially spaced from the drive head; a central shaft extends from the drive head up the hollow center of the quill shaft; and the ends of the hollow quill shaft and the central shaft remote from the drive head mount opposite ends of a flexible cantilever beam on a face of which or on opposed faces of which are mounted one or more strain sensing transducers the output or outputs of which represent sensed torque applied by the drive head.