Drive train for power tool e.g. rotary drill, power screwdriver, has actuator portion, included in speed selector mechanism, which moves reduction gear set between active and inactive modes

摘要

The actuator portion of a speed selector mechanism is operatively coupled to a transmission assembly (16). The actuator portion moves at least two of first, second and third reduction gear sets between active and inactive modes according to the movement of a switch portion among first, second and third positions. Independent claims are also included for the following: (a) a transmission assembly; (b) a power tool.