Synchronized induction motor

Details Synchronized induction motor Synchronized induction motor

1974-04-11

1976-07-06

Haroian, Harry N.

Undertaking

310156, G11B 1700, H02K 2112

Patent

active

039678270

ABSTRACT:
A synchronized induction motor, designed to drive a turntable of a record player, has a stator with two pole pairs spaced 90.degree. apart and a rotor with a short-circuited cylindrical body inductively entrainable by the alternating stator field. The rotor body is provided at one end with a magnetic ring peripherally subdivided into eight magnet poles spaced 45.degree. apart, these poles coacting with an armature on the stator forming two pole shoes jointly magnetizable with one stator pole pair, in line therewith, and two pairs of pole shoes jointly magnetizable with the other stator pole pair, disposed midway between the stator poles. The inductive torque exerted upon the rotor with a 50% lag of the rotor is insufficient to cause further acceleration whereby the rotor is driven synchronously by the coacting pole shoes and magnet poles.

REFERENCES:
patent: 3485498 (1969-12-01), Smith
patent: 3531670 (1970-09-01), Loudon

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