Abstract: A two-speed fastener driving tool includes a reversible rotary motor including means to reverse, having an output shaft connected in axial alignment with a tool driving output shaft by an improved drive assembly comprising a first overrunning clutch axially aligned with the motor output shaft for providing a high speed drive connection with the tool driving output shaft when the motor is rotated in a first direction. A second overrunning clutch surrounds the first overrunning clutch and functions for providing a low speed drive connection with the tool driving output shaft when the motor is rotated in a direction opposite to the first direction.

Abstract: The front end plate for the motor of a portable pneumatic tool has an integral annular portion extending forwardly of a bearing seat in the end plate. An internal ring gear is formed within the annular extending portion and engages planetary gearing carried by an output spindle. The planetary gearing engages a pinion gear on the motor shaft, and the shaft is journaled in a bearing retained in the bearing seat in the end plate. The annular extending portion of the end plate has an outer cylindrical surface for piloting the counterbored rear portion of a housing within which the output spindle is journaled. The end plate is alined circumferentially with the motor housing, and independently thereof, the end plate is alined circumferentially with the cylindrical liner of the motor. As a result, the motor liner is automatically alined with the motor housing during the assembly of the tool.