Erasing machine

Details Erasing machine Erasing machine

1988-07-12

1989-09-12

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

15 353, 51170PT, 200 6185, 310 89, H02K 714, B43L 1900, A47L 524

Patent

active

048663190

ABSTRACT:
A hand-held, motor-driven erasing machine which operates directly from the nominal wall outlet voltage and comprises a generally tubular housing having a front portion and a rear portion which are releasably attached together. A chuck tube is mounted for rotational movement within the generally tubular housing. A DC permanent magnet motor is operatively disposed within the generally tubular housing and includes a wire-wound armature surrounding and attached to the chuck tube, a commutator whose brush surface is positioned at a right angle with respect to the rotational axis of the DC motor, a permanent magnet assembly operatively surrounding the wire-wound armature. A rectifier device is operatively connected to receive the AC voltage from the wall outlet and provide a DC output to the DC motor. A switch assembly is operatively connected between the output of the rectifier device and the DC motor.

REFERENCES:
patent: 3322925 (1967-05-01), Korshak
patent: 3903558 (1975-09-01), Anderson
patent: 3925842 (1975-12-01), Selinder et al.
patent: 4033077 (1977-07-01), Chester et al.
patent: 4808862 (1989-02-01), Carvalho et al.

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