Patent ID: 6277013
Filing Date: 2001-08-21
Classification: B24B

Abstract:
An electric power tool, comprising:a motor having a motor shaft which is rotatable in a predetermined direction and includes a first section;a first gear freely rotatably provided on the motor shaft, the first gear including a gear shaft which coaxially opposes the first section of the motor shaft and which has approximately the same diameter as that of the first section;a second gear provided on a spindle, the second gear engaging the first gear in order to transmit torque from the motor to the spindle; anda coil spring wound around the first section of the motor shaft and the gear shaft of the first gear, the coil spring having an approximately uniform cross-section and being wound in the direction opposite to the rotational direction of the motor shaft such that the coil spring transmits torque between the motor shaft and first gear.