Electrical brush assembly

Details Electrical brush assembly Electrical brush assembly

1989-12-13

1991-01-08

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310233, 310239, 310242, H02K 1300

Patent

active

049838733

ABSTRACT:
An electrical brush assembly for use with a d.c. dynamoelectric machine commutator 44 having a substantially cylindrical commutator contact surface 46 comprising an electrical brush element 48 having a sliding contact surface 50 engageable with the contact surface of the commutator. The brush element is slidably supported by a brush holder 54, and is urged against the contact surface of the commutator by a spring 58. The sliding contact surface of the brush element is a concave cylindrical surface having a central axis 62 substantially parallel to the central axis 45 of the commutator contact surface, and has a radius R2 about 1.2 to 2.5 times larger than the radius R1 of the commutator contact surface.

REFERENCES:
patent: 4536669 (1985-08-01), Morishita
patent: 4554476 (1985-11-01), Gotoh
patent: 4673836 (1987-06-01), Akiyama et al.
patent: 4673838 (1987-04-01), Takagi et al.
patent: 4737654 (1988-04-01), Morishita et al.
patent: 4785214 (1988-11-01), Mummert
patent: 4868441 (1989-09-01), Bulick

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