Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1976-03-29
1978-09-19
Skudy, R. S.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, 310 68R, 310 90, 310194, H02K 3700
Patent
active
041157133
ABSTRACT:
A miniature electric motor is disclosed wherein a synthetic bobbin or frame has a rotor inside of a central cylindrical cavity, the rotor being supported in bearings which include large diameter flanges bonded to the bobbin. The windings are disposed around the bearing flanges and in grooves whose bottom surfaces are tangential to the cylindrical cavity. The windings thus assist in holding the bearing flanges to the bobbin and form part of the motor framework. The angular bottom surfaces effect increase in the number of turns in the windings and effects an increase in the rotor diameter and thus in the motor torque.
A ring yoke of high permeability and low remanence surrounds and is bonded to the bobbin. Attached to the inside wall of the yoke are two diametrically opposed soft iron pins located at an angle to the normal of axis of the field created by the windings to create poles for stopping the rotor at a predetermined position.
REFERENCES:
patent: 3486098 (1969-12-01), Bullinger
patent: 3495113 (1970-02-01), Haydon
patent: 3652884 (1972-03-01), Vuffray
patent: 3747320 (1973-07-01), Vuffray
patent: 3803430 (1974-04-01), DACosta
daCosta Harry H.
Foster Victor W.
Thornton, deceased Charles G.
Bingham Michael D.
Motorola Inc.
Skudy R. S.
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