Brush assembly for use with a direct current machine

Details Brush assembly for use with a direct current machine Brush assembly for use with a direct current machine

1993-01-13

1994-01-18

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310233, 310239, 310242, H02K 1300

Patent

active

052802124

ABSTRACT:
A direct current machine, such as a motor or a dynamo, has a commutator. The commutator has a contact surface which includes a generally cylindrical contact surface. The commutator is rotatable around an axis. A brush assembly of the direct current machine includes at least two brushes. Each brush has a distal surfaces which is engagable to a contact surface of the commutator. A brush holder movably holds the brushes toward the commutator. A clearance is defined between the brush and the brush holder. Each spring urges the corresponding brush against the contact surface of the commutator. Further, the spring urges the brush to be off-set toward the front side of a rotational direction of the commutator, within the brush holder.

REFERENCES:
patent: 1342583 (1920-06-01), Borgner
patent: 2989656 (1961-06-01), Herbst
patent: 4324997 (1982-04-01), Taylor
patent: 4554476 (1985-11-01), Gotoh
patent: 4876475 (1989-10-01), Smith
patent: 4977345 (1990-12-01), Toperzer
patent: 4983873 (1991-01-01), Tanaka et al.
A part of a Japanese Publication "Applications and Developments of Materials for New Compact motors", Dec. 25, 1985 in Japan.

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