Patent ID: 6918450

Claim:
An electric hand power tool selected from the group consisting of a hammer drill and an impact hammer drill, comprising a housing; a drive transmission received in said housing and having an intermediate transmission for turning a tool; an impact mechanism with a swinging drive for delivering axially oriented impacts to the tool; a drive shaft; a transmission toothed wheel fixed on said transmission shaft for turning the latter; a drive bearing provided on said swinging drive and loosely arranged on said transmission shaft; a manually releasable coupling provided for switching off said impact mechanism and connecting said drive bearing with said transmission shaft for a rotation transmission; a crank-shaped flat switching plate provided for releasing said coupling and turnably supported on a receiving dome arranged above said transmission shaft; a drive pin operative for turning said switching plate under said receiving dome and engaging said switching plate; and a handle which is available outside of said housing and displacing said drive pin in a longitudinal direction of said transmission shaft.