Patent ID: 6559613
Filing Date: 2003-05-06
Classification: B25B

Abstract:
A method for controlling an open end power wrench including a motor, a switch connected to the motor for selectively operating the motor, a transmission operatively connected to the motor, a tool engaging end having a housing defining a clearance opening, and a drive socket operatively connected to the transmission and rotatable with respect to the housing, the drive socket defining a socket opening correlating to the clearance-opening, the method including the steps of:operating the motor to generate an output torque; measuring an angle of rotation the drive socket rotates through; comparing the angle of rotation with an angle defined by the clearance opening; limiting the output of the motor to a torque level less than a level defined by the output torque; and increasing the output of the motor to the output torque when the angle of rotation exceeds the angle defined by the clearance opening.