Patent ID: 8356702

Claim:
An oscillation damper ( 3 ) for being mounted on a power tool housing ( 2 ) of a hand-held power tool ( 1 ), the oscillation damper ( 3 ) being formed as a mirror-symmetrical element having a mirror-symmetrical plane ( 5 ) and comprising a housing ( 9 ) for securing the damper ( 3 ) on the power tool housing (S); an oscillating damping mass ( 4 ) having at least a major portion thereof located within the damper housing ( 9 ); and at least one spring ( 5 ) completely located, with respect to an entire axial extent thereof, within the damping mass ( 4 ) and arranged between two, axially spaced from each other, first stops ( 13 ) which are provided in the damping mass ( 4 ), for preloading the damping mass ( 4 ) against the power tool housing ( 2 ) in an axial direction defined by a spring axis, wherein the damper housing ( 9 ) has two, axially spaced from each other, second stops ( 12 ) for the at least one spring, which are located in a mirror-symmetrical plan (S) of the mirror-symmetrical element, wherein one of the second stops ( 12 ) forms, with an axially opposite first stop ( 13 ), a first pair of stops, and another one of the second stops ( 12 ) forms with another one of the first stops ( 13 ), a second pair of stops, and wherein the at least one spring ( 5 ) is alternatively preloaded between the first and the second pairs of stops during oscillation of the damping mass.