Electrical generator or motor structure – Dynamoelectric – Reciprocating
Patent
1991-03-29
1992-09-08
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Reciprocating
62 6, 417416, 417437, 417901, H02K 3316
Patent
active
051461242
ABSTRACT:
A linear drive motor of a cryogenic refrigerator, where a reciprocating armature is coupled to a piston which alternately compresses and expands a gaseous fluid in a thermodynamic cycle. The piston has a clearance seal and is attached at one end to a flexible coupling to reduce cross-bearing loads exerted by the piston along the clearance seal. A displacer assembly of the cryogenic refrigerator employs a displacer piston that reciprocates along a clearance seal. The displacer piston is coupled to the displacer cylinder and/or the armature of a displacer drive motor by a flexible coupling that reduces radial forces exerted by the displacer piston on the clearance seal.
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Higham Graham
Michaud Steven A.
Sand William
Weeks Alan
Young Niels
Helix Technology Corporation
Jones Judson H.
Stephan Steven L.
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