Patent ID: 7190100

Claim:
A power tool, comprising: a housing ( 4 ); an electrical motor ( 6 ) located in the housing ( 4 ), rotatable in clockwise and counterclockwise rotational directions, and having a commutator ( 12 ) rotatable about an axis (A) of the motor ( 6 ); a brush carrier ( 14 ) carrying at least two brushes ( 2 ) that electrically contact the commutator ( 12 ) of the motor ( 6 ); an actuation member ( 26 ) accessible from outside of the housing ( 4 ) for rotating the brush carrier ( 14 ) relative to the housing ( 4 ) in a circumferential direction (U) of the commutator ( 12 ) between clockwise rotational position and counterclockwise rotational position; and a device for preloading the brush carrier ( 14 ) in both the clockwise and counterclockwise rotational positions and having at least one spring member ( 32 ) for biasing the brush carrier ( 14 ) both in the circumferential direction (U) and an axial direction of the commutator ( 12 ).