Patent ID: 7168349
Filing Date: 2007-01-30
Classification: B25B

Abstract:
1. An omnidirectional twisting tool comprising: a handle; the handle being a hollow tube body; one end of the handle being opened; a strain gauge installed at a lower portion of the handle; the strain gauge including an integrating element and a connecting unit for connecting the integrating element and a driving portion; values of twisting forces in operation being displayed on a display; a driving head at a front end of the spanner body; a rotary unit at one end of the driving head; an annular groove being formed at a lateral wall of the rotary unit; the rotary unit being pivotally installed at one end of the handle so that the driving head can rotate through 360 degrees around an axis of the handle; a connecting rod extending from a lower end of the rotary unit; the connecting rod being received within the handle; the connecting rod being connected to the connecting unit so as to transfer twisting forces of the spanner to the integrating element of the strain gauge; and wherein a C ring is received in the annular groove of the rotary unit so as to confine the rotary unit within the handle; and wherein two ends of a cross section of the annular groove are formed as tapered shapes; thereby other than rotating through 360 degrees around the axis of the handle, the driving portion can rotate around a center of the annular groove according to the arc of the tapered shape.