Bidirectional brush holder assembly

Details Bidirectional brush holder assembly Bidirectional brush holder assembly

1993-04-30

1994-05-24

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310242, H02K 1300

Patent

active

053151992

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).

REFERENCES:
patent: 3553504 (1971-01-01), Balcke et al.
patent: 3898493 (1975-08-01), Schaffer
patent: 4254353 (1981-03-01), Matsuda
patent: 4347455 (1982-08-01), Major et al.
patent: 4926075 (1990-05-01), Fushiya et al.
patent: 4990811 (1991-02-01), Nakata et al.
patent: 5113106 (1992-05-01), Schmid
patent: 5184041 (1993-02-01), Baer et al.
patent: 5198712 (1993-03-01), Bolzan et al.

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