US Patent 7612482 Electric motor with brush plate

An electric motor fixedly axially securable in a housing includes a brush plate with a plurality of axially projecting, uniformly circumferentially distributed, convexly shaped, locking segments formed on the brush plate. The brush plate and the locking segments may be formed of an injection-moldable plastic material. The locking segments may be spherically shaped, and the there may be four locking segments. The brush plate may include a plurality of radial, circumferentially distributed, stop surfaces with which are associated a corresponding plurality of radially inwardly projecting radial guides in the housing.