Commutator motor with a magnetic field deflecting moving charge

Details Commutator motor with a magnetic field deflecting moving charge Commutator motor with a magnetic field deflecting moving charge

1999-05-18

2000-09-05

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310220, 310221, 310222, 310231, 310239, 310248, H02K 3908

Patent

active

061147923

ABSTRACT:
In order to reduce the wear on the brushes (6) and thus extend the operating lives of the brushes and of the commutator motor, brush sparking on the trailing edges (6.2) of the brushes (6) is reduced a commutation magnetic field (M), produced for example by an additional magnet (4) placed axially behind the brushes (6), such that the magnetic field (M) deflects the moving charge carriers in the brushes (6), to thereby reduce the current density at the trailing edges (6.2) of the brushes (6).

REFERENCES:
patent: 3648089 (1972-03-01), DeWolf
patent: 4110718 (1978-08-01), Odor et al.
patent: 4342931 (1982-08-01), Grossmann et al.
patent: 4980593 (1990-12-01), Edmundson
patent: 5481150 (1996-01-01), Tanaka et al.

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