Electric manual machine tool driven by an electric motor

Details Electric manual machine tool driven by an electric motor Electric manual machine tool driven by an electric motor

2007-03-27

2007-03-27

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S233000

Reexamination Certificate

active

10520432

ABSTRACT:
A hand power tool that is driven via an electric motor (20), the electric motor (20) having a commutator (28) which is formed of disklike annular segments or laminations (32), is made more secure against contact spark development by providing that at least one of the laminations (32) has at least one central recess (42, 44, 46).

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