Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-04-20
1998-09-29
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310114, 310126, 310156, H02K 720, H02K 1744, H02K 1938
Patent
active
058149139
ABSTRACT:
A multishaft electric motor has a plurality of juxtaposed rotors having respective permanent magnets disposed therearound, and a plurality of sets of armature elements disposed fully circumferentially around the rotors, respectively, the permanent magnets of adjacent two of the rotors having a plurality of pairs of unlike magnetic poles for magnetically coupling the rotors through the armature elements between the permanent magnets. A positive-displacement vacuum pump includes a casing, a pair of pump rotors rotatably disposed in the casing in confronting relation to each other, and a two-shaft electric motor coupled to the pump rotors for rotating the pump rotors in opposite directions. The two-shaft electric motor may comprise a pair of juxtaposed rotors and a pair of sets of armature elements disposed fully circumferentially around the rotors, respectively.
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Hisabe Yasushi
Matake Kozo
Nagayama Masami
Ogamino Hiroaki
Ojima Yoshinori
Ebara Corporation
Enad Elvin G.
Stephan Steven L.
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