Patent ID: 6665923
Filing Date: 2003-12-23
Classification: B25B,F16D,Y10T

Abstract:
A screw gun comprising:a drive means; a first spindle having a first helical spline formed on a portion thereof; a first clutch having a second helical spline formed on a portion thereof so that the second helical spline engages the first helical spline of the first spindle, the first clutch being movable rotationally and axially relative to the first spindle; a second spindle, one of the first spindle or the second spindle being driven by the drive means; a bit adapted for driving a fastener into a work piece, the bit being operatively connected to the other of the first spindle or the second spindle; and a second clutch mounted on the second spindle and rotationally fixed relative to the second spindle, the second clutch being movable in an axial direction relative to the first spindle to engage the first clutch, torque being transmittable between the first clutch and the second clutch upon engagement with one another.