Long linear stroke reciprocating electric machine

Details Long linear stroke reciprocating electric machine Long linear stroke reciprocating electric machine

1983-12-27

1985-09-17

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

310 27, 310 15, 310 30, H02K 3300

Patent

active

045423113

ABSTRACT:
A linear stroke reciprocating electric machine provides both high efficiency and linearity. A cylindrical air gap is defined between outer and inner gap defining surfaces, at least one of which has a length equal to the length of an electric coil plus the length of the stroke. A flux focusing ring, having a length in the direction of movement equal to the length of the coil in the same direction, concentrates substantially all the field flux and all of the electric coil turns to interact over the entire stroke.

REFERENCES:
patent: 3018467 (1962-01-01), Harris
patent: 3505544 (1970-04-01), Helms
patent: 4161666 (1979-07-01), Bacsanyi et al.
patent: 4227142 (1980-10-01), Jarret et al.
patent: 4427906 (1984-01-01), Kainuma et al.
patent: 4439700 (1984-03-01), Menzel et al.

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