Small electric motor

Details Small electric motor Small electric motor

1982-10-07

1985-02-19

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310219, 310239, H02K 1306

Patent

active

045008043

ABSTRACT:
A small electric motor wherein brushes are disposed on the contact surface of a commutator having a lubricant coated thereon at a predetermined angle with respect to the direction normal to a rotor rotating shaft so that the brushes plow through the lubricant film over a wide area while making slide contact with the commutator, whereby the contact resistance of the brushes is stabilized.

REFERENCES:
patent: 1771609 (1930-07-01), Berger
patent: 2812454 (1957-11-01), Buck
patent: 3234420 (1966-02-01), Lindner
patent: 4322650 (1982-03-01), Mabuchi

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