Title:
DYNAMOELECTRIC MACHINE HAVING AN ENCAPSULATED COIL STRUCTURE
Document Type and Number:
WIPO Patent Application WO2004008603
Kind Code:
A3
Abstract:
Magnet wires wound in slots in a lamination stack of a dynamoelectric machine are encapsulated, in whole or in par, with plastic. The plastic may be thermally conductive and have features molded therein that enhance heat transfer. The plastic may stiffen the armature and increase its critical speed. Characteristics of the plastic, its geometry and its distribution may be varied to adjust spinning inertia and resonant frequency of the armature. The magnet wires may be compressed into the slots, by application of iso-static pressure or by the pressure of the plastic being molded around them. Larger magnet wire can then be used which increases the power of the electric motor using the armature having the larger magnet wire. A two or three plate mold may be used to mold the plastic around the armature. Balancing features can be molded in place. The plastic can have a base polymer that is a blend of two or more polymers and various thermally conductive fillings.
Inventors:
DU HUNG T (US)
VERBRUGGE BRANDON (US)
WEST JOSHUA (US)
SELL MICHAEL (US)
WALTER RICHARD T (US)
SMITH DAVID J (US)
ORTT EARL M (US)
STONE JOHN C (US)
WHITE HOWARD (US)
VERBRUGGE BRANDON (US)
WEST JOSHUA (US)
SELL MICHAEL (US)
WALTER RICHARD T (US)
SMITH DAVID J (US)
ORTT EARL M (US)
STONE JOHN C (US)
WHITE HOWARD (US)
Application Number:
PCT/US2003/021544
Publication Date:
July 01, 2004
Filing Date:
July 10, 2003
Export Citation:
Assignee:
BLACK & DECKER INC (US)
DU HUNG T (US)
VERBRUGGE BRANDON (US)
WEST JOSHUA (US)
SELL MICHAEL (US)
WALTER RICHARD T (US)
SMITH DAVID J (US)
ORTT EARL M (US)
STONE JOHN C (US)
WHITE HOWARD (US)
DU HUNG T (US)
VERBRUGGE BRANDON (US)
WEST JOSHUA (US)
SELL MICHAEL (US)
WALTER RICHARD T (US)
SMITH DAVID J (US)
ORTT EARL M (US)
STONE JOHN C (US)
WHITE HOWARD (US)
International Classes:
B29C45/14; H02K1/30; H02K1/32; H02K3/12; H02K3/30; H02K3/34; H02K3/44; H02K3/46; H02K3/48; H02K7/04; H01F5/00; H02K9/22; H02K13/00; H02K13/04; H02K15/12; H02K15/16; H02K3/487; H02K3/50; H02K9/20; (IPC1-7): H02K15/12; H02K13/00; H02K3/34; H02K1/32; H02K9/22; H02K3/46; H02K3/48; H02K3/12; H02K1/30; H02K15/16; H02K7/04; H02K13/04; H02K3/30
Foreign References:
| US4983866A | 1991-01-08 | |||
| US1888211A | 1932-11-22 | |||
| FR1137505A | 1957-05-29 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 008, no. 029 (E - 226) 7 February 1984 (1984-02-07)
PATENT ABSTRACTS OF JAPAN vol. 008, no. 149 (E - 255) 12 July 1984 (1984-07-12)
PATENT ABSTRACTS OF JAPAN vol. 018, no. 411 (M - 1648) 2 August 1994 (1994-08-02)
PATENT ABSTRACTS OF JAPAN vol. 008, no. 149 (E - 255) 12 July 1984 (1984-07-12)
PATENT ABSTRACTS OF JAPAN vol. 018, no. 411 (M - 1648) 2 August 1994 (1994-08-02)
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