Bidirectional brush holder assembly

Abstract

A brush holder assembly (10) adapted for selective cooperation with a plurality of motor housings (12,14) and for holding a brush (90) in contact with a rotatable commutator (42) is disclosed. The brush holder assembly (10) comprises an elongated brush (90), an elongated body (50) and an elongated insert (52). The brush (90) has a generally non-circular cross-section and a semi-cylindrical free end (93) shaped to complementarily engage the commutator (42). The elongated body (50) has a non-circular inner bore (60) and a mounting arm (66) for selectively mounting the body (50) to a plurality of motor housings (12,14) in at least two different angular orientations relative to the axis of the bore (60). The elongated insert (52) is adapted to be selectively received and held within the bore (60) of the body (50) in a plurality of different angular orientations relative to the axis of the bore (50). The insert (52) defines a non-circular cavity for receiving the brush (90) in a predetermined angular orientation with respect to the cavity. When the body (50) is mounted to the motor housing (12,14), the insert (52) may be angularly aligned within the bore (60) of the body (50) such that the brush (90) can only be placed within the insert (52) with the semi-cylindrical free end (93) of the brush (90) in coaxial alignment with the commutator (42).

Dependencies are inferred from the claim text.