Patent ID: 7806027
Filing Date: 2010-10-05
Classification: B25B

Abstract:
1. A torque wrench of the type having a jaw for rotating a workpiece and having a handle for rotating said jaw and with said handle being pivotal relative to said jaw upon applying a quantifiable torque to the workpiece, and said wrench having a longitudinal axis and said jaw and said handle extending along said axis and being pivotally joined together by a pin extending transverse to said axis, the improvement comprising: a cam rotatably interposed between said handle and said jaw for transmitting torque therebetween, a ratchet connected with said cam and rotatable therewith and impeding rotation of said cam in a first direction to thereby transmit torque from said handle to said jaw and permitting rotation of said cam in a direction opposite from said first direction, a connector on said handle and engaged with said cam for the transmission of torque between said handle and said jaw, and a spring imposed upon said connector for effecting the amount of torque transmission between said handle and said jaw and for having said connector override said cam to have said handle pivot relative to said jaw upon application of a predetermined amount of torque from said handle to said jaw.