Electromagnetic devices

Details Electromagnetic devices Electromagnetic devices

1976-12-17

1978-05-16

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Reciprocating

335220, 335266, H02K 3300

Patent

active

040900975

ABSTRACT:
An electromagnetic device comprises an annular member and a core member the latter having formed in its slots and the annular member having projections located in said slots. The projections and the adjacent wall of the slot define attraction faces which when a winding located in the slot is energized, are attracted towards each other thereby to produce relative movement between the members. The other faces of the projection are provided in accordance with the invention, with a coating of an electrically conductive material so that when the windings are energized eddy currents flow in the conductive material which act to assist the relative movement of the members.

REFERENCES:
patent: 3353040 (1967-11-01), Abbott
patent: 4003013 (1977-01-01), Seilly

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