Motor

Details Motor Motor

1991-07-11

1992-07-21

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310 91, 310238, 310248, H02K 1300

Patent

active

051325802

ABSTRACT:
A labyrinth ring having a section of L-shape is radially, inwardly and integrally projected from the inner periphery of a brush holder stay of a motor. This labyrinth ring provides a labyrinth construction in a space portion extending from brushes and a ball and roller bearing in cooperation with the brush holder stay, a commutator, a bearing holder and a distance ring. The thickness of this labyrinth ring is determined to be so thin as to increase the volume of a carbon accumulating space portion formed between the bearing holder and itself as large as possible.

REFERENCES:
patent: 4384225 (1983-05-01), Iwaki et al.
patent: 4387314 (1983-06-01), Iwaki et al.
patent: 4859894 (1989-08-01), Akutsu et al.
patent: 4926078 (1990-05-01), Isozumi et al.

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