Patent ID: 7604071

Claim:
A power tool comprising: a tool bit; a driving motor; a first operating mechanism that linearly drives the tool bit and thereby causes the tool bit to perform a predetermined operation, the first operating mechanism including: a first driving mechanism that converts a rotating output of the driving motor into a linear motion in the axial direction of the tool bit; and a striker that is caused to reciprocate by the first driving mechanism and thereby drives the tool bit; a dynamic vibration reducer that reduces vibration in the operation of the tool bit via a weight that reciprocates under the action of a biasing force of an elastic element; and a second operating mechanism that mechanically excites the elastic element to thereby forcibly drive the weight, the second operating mechanism including: a second driving mechanism that converts a rotating output of the driving motor into a linear motion in the axial direction of the tool bit; and a slider that is caused to reciprocate by the second driving mechanism and thereby excites the elastic element.