Patent ID: 7052384

Claim:
A power tool comprising a housing ( 12 ); a turnably driveable driven shaft ( 20 ) for a releasably attachable tool, said driven shaft ( 20 ) being arranged in the housing; means ( 34 ) for stopping the driven shaft ( 20 ), said means for stopping comprising an axially displaceable locking pin ( 36 ) extending and fitting in a sliding guide ( 35 ) provided in the housing ( 12 ) so that said locking pin ( 36 ) is operable from outside of the housing and an O-ring ( 43 ) installed in an annular groove ( 41 ) around the locking pin ( 36 ) and arranged approximately centrally on the locking pin, so that lubricant in an interior of the housing does not leak through the sliding guide ( 35 ) to the outside of the housing; wherein a diameter-length ratio of the sliding guide and of the locking pin fitting in the sliding guide is less than 1.8.