Patent ID: 8067913

Claim:
A power tool comprising: a motor; a trigger switch operated by a user, the trigger switch having a main contact that is turned ON by operations of the trigger switch and a speed contact that is configured to output a speed signal having a signal level corresponding to an amount of operation of the trigger switch; and a driver that determines the presence or absence of operations of the trigger switch according to an ON/OFF state of the main contact of the trigger switch and controls, when it is determined that the trigger switch has been operated, a rotation speed of the motor in accordance with the amount of operation of the trigger switch; wherein the driver stops the motor, when the main contact is turned OFF, if the level of the speed signal outputted from the speed contact is less than a set level; and the driver maintains rotation of the motor if the level of the speed signal outputted from the speed contact is the set level or more even when the main contact is turned OFF.