DC motor brush assembly, method of producing the same and brush

Details DC motor brush assembly, method of producing the same and brush DC motor brush assembly, method of producing the same and brush

1997-05-27

1998-04-28

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310239, 29826, H02K 1300

Patent

active

057448914

ABSTRACT:
A DC motor brush assembly includes a brush brought into contact with a commutator piece which is connected to the coil of a DC motor, and a brush holder of plastic material for holding the brush against the motor housing. The brush is formed by bending from a bottom shield sheet. The bottom shield sheet is brought into intimate contact with a mold to form a non-molding chamber containing the brush when the brush holder is to be insert-molded. The brush holder is molded integrally over the bottom shield sheet.

REFERENCES:
patent: 3194931 (1965-07-01), Plasko et al.
patent: 4574215 (1986-03-01), Mabuchi
patent: 4746829 (1988-05-01), Strobl
patent: 5013952 (1991-05-01), Sekine et al.
patent: 5363005 (1994-11-01), Shibata et al.

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