Brush assembly and mounting arrangement for a portable tool

Details Brush assembly and mounting arrangement for a portable tool Brush assembly and mounting arrangement for a portable tool

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

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