Patent ID: 8727034

Claim:
A rotary power tool operable in a first speed mode and a second speed mode comprising: a motor shaft; a driveshaft with an axis of rotation; a gear that is a component of a transmission for transmitting torque from the motor shaft to the driveshaft; a support member; at least one bearing member which contacts the gear, wherein the gear, the support member and the at least one bearing member form an assembly that is in a first position along the axis of rotation when the tool is operating in the first speed mode and is in a second position along the axis of rotation when the tool is operating in the second speed mode, and wherein at least one bearing member protrudes from the support member in the direction of the gear and rotates when the gear rotates, wherein the first speed mode is achieved by shifting the assembly at a first axial position, and wherein the second speed mode is achieved by shifting the assembly at a second axial position.