Patent ID: 6276243
Filing Date: 2001-08-21
Classification: B25B

Abstract:
An electromechanical releasing torque wrench comprising:a) an elongated enclosure having a first end and a second end with a handle disposed upon the second end, wherein said enclosure is a hollow metallic structure and irregular in shape,b) ratchet means disposed within with the first end of the enclosure for attachment and rotation of a threaded fastener workpiece,c) ratchet pivot means proximately adjoining the enclosure first end, allowing limited swiveling of the ratchet means within the enclosure,d) force sensing means contiguously engaging said ratchet means converting physical torque value energy into an analog electronic signal,e) locking latch means having a mechanical advantage, abutting and retaining said ratchet means in a fixed rigid position until a predetermined amount of torque is applied to the wrench, said mechanical advantage reducing level of applied torque,f) electromechanical actuated trigger means having mechanical motion and Interfacing with the locking latch means such that when a predetermined amount of torque is manually applied to the wrench both the locking latch and ratchet means are released by movement of the trigger means using the mechanical advantage of the locking latch means, simultaneously producing a momentary reduction in force felt by the operator and an audible clicking sound as the ratchet means strikes the enclosure, andg) an electronic controller amplifying and conditioning a signal from the force sensing means and switching a circuit to control the trigger means.