Electrical generator or motor structure – Dynamoelectric – Rotary
Reissue Patent
2007-07-31
2007-07-31
Tamai, Karl (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S06800R, C310S112000
Reissue Patent
active
09885942
ABSTRACT:
A sealed actuator includes a motor stator having rotation-drive magnetic poles; a motor rotor arranged so as to confront magnetic pole surfaces of the motor stator while interposing a small distance therebetween and rotatably supported through roller bearings; and displacement detecting means for measuring displacement of the motor rotor. A partition wall made of a nonmagnetic metal is disposed in a clearance between the motor stator and the motor rotor, so that the inner space where the motor stator is disposed is hermetically covered. The bearings are disposed at both sides of the partition wall in the axial direction so that the load applied to the bearings are directly received by a housing. At least a part of the partition wall is reinforced by reinforcing members and a mold agent is charged into the space on the motor stator side.
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Translation of French Patent 2527854 by Jacquin “Direct Current Motor Operating Submerged”, Dec. 1983, 10 pages.
Horikoshi Atsushi
Watanabe Hayao
NSK Ltd.
Sughrue & Mion, PLLC
Tamai Karl
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