Electrical generator or motor structure – Dynamoelectric – Reciprocating
Patent
1976-12-08
1978-10-17
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Reciprocating
417416, H02K 3318
Patent
active
041211251
ABSTRACT:
The invention relates to an oscillating electrodynamic compressor having an electromagnetic drive which maintains a radial magnetic field in an annular gap in which a coil is arranged for axial contactless movement. The coil is mounted on a plunger guided inside a bore of a cylinder member forming the compressor. The plunger and coil unit is held in position by a pair of vibrating springs so as to provide a resilient support bearing on the one hand on the magnet drive and on the compressor on the other hand. The springs overlap the cylinder so that the planes in which the springs bear against the plunger and coil unit intersect the cylinder bore guide for the plunger even during the stroke of the plunger.
REFERENCES:
patent: 3781140 (1973-12-01), Gladden
patent: 3903438 (1975-09-01), Dolz
patent: 4002935 (1977-01-01), Brauer
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