Electromagnetic devices

Details Electromagnetic devices Electromagnetic devices

1980-06-18

1982-04-20

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 27, 310 30, 310112, H02K 1500

Patent

active

043261396

ABSTRACT:
An electromagnetic device comprises a stator structure and an armature surrounding the stator structure. The stator structure is provided with axially spaced pole pieces which are of annular form and between which are located electrical windings connected so that adjacent pole pieces have opposite magnetic polarity. The armature has complementary pole pieces and when the windings are energized the armature will move relative to the stator structure. In order to facilitate construction of the device the stator structure is formed as a plurality of portions each of which has a cylindrical portion and a rim portion. The armature is formed as a stack of annular portions each of which includes an inwardly extending pole piece. The device is constructed by assembling the armature and stator structure alternately and in sequence.

REFERENCES:
patent: 3596122 (1971-07-01), Stewart
patent: 3976965 (1976-08-01), Remus
patent: 4156822 (1979-05-01), Roddy et al.
patent: 4238699 (1980-12-01), Seilly

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