Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1982-07-27
1984-08-14
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310154, 310197, H02K 2100
Patent
active
044659504
ABSTRACT:
A synchronous motor which has a ring-shaped stator with a radially magnetized ring-shaped permanent magnet and an external housing of a material of high permeability to complete the magnetic circuit. At the inner side of this ring-shaped stator lies a rotor having a central core provided at its ends with pole rings of a material of high permeability. The coil of the motor is provided in the center of the stator and mounted between the pole rings. This construction gives rise to a high magnetic flux in the permanent magnet in the region of the poles of the rotor, which in turn, provides a high driving torque; while the rotor is made exclusively of material of high permeability, having a low weight and a low moment of inertia. Such motors, even when constructed to operate at relatively high power, are thus assured of positive starting.
REFERENCES:
patent: 2982872 (1961-05-01), Fredrickson
patent: 3517237 (1970-06-01), Lloyd
patent: 3555325 (1971-01-01), Inariba
patent: 3754155 (1973-08-01), Oudet
patent: 4185214 (1980-01-01), Geber
patent: 4324995 (1982-04-01), Sakai
patent: 4363984 (1982-12-01), Torii
IBM Technical Disclosure Bulletin, vol. 9, No. 7, Dec. 1966.
Skudy R.
Sodeco-Saia SA
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