Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1980-08-27
1982-12-28
Miller, J. D.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 50, 310242, H02K 1300
Patent
active
043664032
ABSTRACT:
There is disclosed an easily demountable brush assembly for electric motors utilized in portable electric tools. The assembly includes brush units which when removed from an open end of the motor casing provides ready access to the brush holders for the conventional carbon brush. Each brush unit includes a non-conductive board which is mounted radially with respect to the commutator of the motor. The boards are secured within grooves formed on the inner wall of the motor casing. Finally, the open end of the motor casing is supplied with a removable cap which holds the brush units in position when the cap is secured to the motor.
REFERENCES:
patent: 1693322 (1928-11-01), Stanton
patent: 2727165 (1955-12-01), Schaffer
patent: 2870354 (1959-01-01), Antonidis et al.
patent: 3229135 (1966-01-01), Peltret
patent: 3745393 (1973-07-01), Spors
patent: 3813567 (1974-05-01), Schmuck
Johnson John W.
Oatham Robert J.
Simpson Frank F.
Black & Decker Inc.
Miller J. D.
Murphy Edward D.
Ottesen Walter
Rebsch D. L.
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