Patent ID: 7015618

Claim:
Arrangement for supplying power to an electric motor including a commutator, comprising: a carrier penetrable by the commutator in a central portion thereof, and having a base or bottom part carrying an at least partially encapsulated conductor track or printed circuit; a pair of leaf springs, each of said leaf springs being formed from a single piece bent into a U-shape having legs of unequal length comprising a longer leg and a shorter leg, the longer leg and the shorter leg being connected by a transverse portion, said longer leg having an inner side facing the shorter leg with a portion thereof extending therebeyond; said leaf springs being fixed to the carrier opposite to each other with the central portion penetrated by the commutator therebetween, each of said leaf springs being mounted such that the shorter leg thereof is adjacent the central portion and the longer leg is adjacent an outer edge of the carrier, and having means for connection to an electric terminal; a carbon brush attached to the inner side of the longer leg of each of said leaf springs on the portion extending beyond the shorter leg, each carbon brush having a rear side lying flat on the inner surface, and a running surface facing the central portion for contacting the commutator; the shorter leg of each of the leaf springs having a projecting section extending co-planar with the shorter leg and connected to the conductor track or printed circuit; said leaf springs subjecting the carbon brushes to force in the direction of the commutator.