Robert Boschgmbh

Guenther Berger

Stefan Heess

Mario Frank

Peter Stierle

Ralph Dammertz

Albert Kleider

Manfred-Otto Staebler

Maria-Margareta Sulea

Roland Walz

Claus Kemmner

Manfred-Wilhelm Staebler

Martin Schmideder

Dieter Butz

Arnulf Gutknecht

Juergen Stierle

An electric motor for hand power tools has a rotor shaft, a rotor provided with a metal plate pack which is rotatably supported and non rotatably connected with the rotor shaft, the metal plate pack having a plurality of grooves which are spaced from one another in a peripheral direction and provided with a coating of insulating material, a rotor winding received in the grooves provided with the groove coating, the metal plate pack having an end plate composed of insulating material and arranged at each end side of the metal plate pack, the groove coatings and the end plates together with the rotor shaft as shaft ends axially projecting from the end plates being formed as synthetic plastic parts produced by an injection molding.

Electric motor, in particular for hand power tools

A power tool ( ), in particular an angle grinder, having a housing ( ) that receives an electric motor ( ) and a gear ( ), the motor ( ) having a rotor ( ) which is guided in rotor bearings ( ) and on one hand carries a collector ( ), which collector can be put into contact with a voltage source via carbon brushes ( ) supported in brush plates, is made sturdier and easier to install in that the housing ( ) comprises two longitudinally split housing shells ( ), and that the brush plates are part of a bearing bridge ( ) that carries both the rotor bearing ( ) and the carbon brushes ( ), and the bearing bridge ( ), in the guide region of the carbon brushes ( ), comprises plastic.

Angle grinder with electric drive

Cut-out brush for electric hand tool

An eccentric disk grinder has a grinding disk, an eccentric shaft fixedly connected with the grinding disk, a motor, a shaft having an axis arranged so that the motor eccentrically, circulatingly and rotatably moves around the axis of the shaft, with the eccentric shaft being rotatable relative to the shaft, a braking device provided for delaying movement of the grinding disk and having a braking element which follows the movement of the grinding disk and is delayable relative to the grinding disk.

Eccentric disk grinder with a grinding disk brake

An eccentric disk grinder has a housing, a motor accommodated in the housing and having a shaft provided with an eccentric member, a first bearing supporting the shaft, a grinding disk eccentrically, circulatingly and rotatingly driven by the motor through the shaft, and a second bearing in which the grinding disk is rotatable relative to the shaft about an axis of the eccentric member. The second bearing includes at least one first bearing which takes up substantially radial forces and supports at least one of the shaft and the eccentric member at its end facing the grinding disk. The bearings also have at least another second bearing which takes up substantially axial forces and supports at least one of the shaft and the eccentric member at its side facing away from the grinding disk.

Eccentric disk grinder

A hand held power tool has a working disc and a working sheet held on the working disc by a burdock connection. The working disc has a burdock surface. An intermediate pad is held on the burdock surface of the grinding disc. The intermediate pad has a first side provided with a velour coating and releasably connectable with the burdock surface of the grinding working disc and a second side releasably connectable with the working sheet.

Hand held power tool with working disc

Growing community of inventors

Notzingen, Germany

Guenther Berger