Patent ID: 6598684
Filing Date: 2003-07-29
Classification: B25B

Abstract:
A power tool adapted to tighten a fastener, comprising:a drive source, means for generating an elevated torque operably coupled to the drive source, a sensor detecting when the means for generating an elevated torque has begun to operate and generate the elevated torque and a control device in communication with the sensor and the drive source, the sensor communicating signals to the control device when the means for generating an elevated torque has begun to operate and generate the elevated torque, wherein the control device determines whether the means for generating an elevated torque has begun to operate and generate the elevated torque either (1) before the fastener has reached a seated position against a workpiece or (2) after the fastener has reached the seated position against the workpiece, wherein the control device only controls the operation the drive source based upon signals generated by the sensor after the fastener has reached the seated position against the workpiece.