Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1975-11-25
1977-02-22
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, 310156, 310112, 310114, 310257, H02K 2114
Patent
active
040094065
ABSTRACT:
A synchronous micrometer wherein the rotor has a permanent magnet structure. This permanent magnet structure is surrounded by a cylindrical stator component of soft magnetic material formed with elongated axially extending cutouts which except for their opposed ends are of substantially elliptical configuration to define between themselves elongated axially extending wall portions of the cylindrical stator component which are of a substantially hourglass configuration. To one end of this cylindrical stator component is fixed a transverse wall which engages a transverse wall of a casing which houses a coil structure which coaxially surrounds the cylindrical stator component as well as the permanent magnet rotor.
REFERENCES:
patent: 2122307 (1938-06-01), Welch
patent: 2548633 (1951-04-01), Stephenson
patent: 3135886 (1964-06-01), Kavanaugh
patent: 3501658 (1970-03-01), Morley
patent: 3504253 (1970-03-01), Kavanaugh
patent: 3541363 (1970-11-01), Vettermann et al.
patent: 3549918 (1970-12-01), Croymans et al.
patent: 3571638 (1971-03-01), Inariba
patent: 3668585 (1972-06-01), Johnson
patent: 3684907 (1972-08-01), Hinachi et al.
patent: 3693034 (1972-09-01), Inariba
patent: 3894252 (1975-07-01), Miwa et al.
patent: 3950663 (1976-04-01), Mead
patent: R28075 (1974-07-01), Kavanaugh
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