Brush protection in an electric motor

Details Brush protection in an electric motor Brush protection in an electric motor

1988-02-16

1990-01-09

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 89, 310242, 310246, H02K 1300

Patent

active

048930431

ABSTRACT:
In an electric motor having a commutator, when a brush wears the associated brushleaf carrying the brush may snag in gap between commutator segments of the commutator, the rotating commutator dragging a bushleaf around into electrical contact with the other brushleaf. To prevent electrical contact being made directly, or via a common commutator segment, a stop is integrally formed with a holder carrying the brushleaves to limit the movement of the brushleaf.

REFERENCES:
patent: 4296343 (1981-10-01), McMillen
patent: 4414481 (1983-11-01), de Jong
patent: 4596941 (1986-06-01), Kluck

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