Miniature electric motor employing a conversion mechanism for li

Details Miniature electric motor employing a conversion mechanism for li Miniature electric motor employing a conversion mechanism for li

1978-03-23

1980-07-22

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 83, 310112, H02K 700

Patent

active

042141800

ABSTRACT:
A miniature electric motor including a shaft, at least one rotor coaxially mounted on the shaft and having a plurality of pole teeth angularly spaced from each other, at least one permanent magnet stator magnetized to provide north and south poles alternating at angular spacings corresponding to the angular spacings of the pole teeth, at least one annular exciting coil, and a yoke member made of magnetic material. The yoke member, exciting coil and stator are positioned relative to the rotor so that a magnetic flux developed by the exciting coil combines with the pole teeth of the rotor to form a magnetic loop. The motor further includes a motion translating mechanism located between the rotor and the shaft for converting the rotation of the rotor into a linear movement of the shaft.

REFERENCES:
patent: 2366239 (1945-01-01), McCoy
patent: 3159758 (1964-12-01), Hemperly, Jr. et al.
patent: 3165656 (1965-01-01), Korthaus et al.
patent: 3984709 (1976-10-01), Kuwako et al.
patent: 4048531 (1977-09-01), Buess et al.

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