D.C. Subfractional horsepower motor with flux shunt for variable

Details D.C. Subfractional horsepower motor with flux shunt for variable D.C. Subfractional horsepower motor with flux shunt for variable

1979-07-20

1981-07-14

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 47, 310154, H02K 100, H02K 2340

Patent

active

042789079

ABSTRACT:
For adjusting the rpm with the assistance of mechanical regulators consisting of low-retentivity magnetic material, the air gap between the rotor and the stator, and/or the magnetic return between the stator field poles of opposite polarity, and/or a magnetic shunt is adjusted. The illustrative embodiments are particularly provided for d.c. subfractional horsepower motors for the drive of dental tools.

REFERENCES:
patent: 501532 (1893-07-01), Offrell
patent: 1377229 (1921-05-01), Tanner
patent: 1399803 (1921-12-01), Schafer
patent: 1470092 (1923-10-01), Modigliani
patent: 2949552 (1960-08-01), Benoit
patent: 3209457 (1965-10-01), Billin et al.
patent: 3842300 (1974-10-01), Daykin et al.
patent: 4110649 (1978-08-01), Mas

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