Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1993-12-15
1996-07-30
Page, Thurman K.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428198, 428233, 428284, 428286, 428324, 4284744, 428480, 428241, 428242, 156305, B32B 302, B32B 516, B32B 2706, C09J 500
Patent
active
055409695
ABSTRACT:
To improve the thermal conductivity of the main insulation of an electrical machine, an insulating tape is proposed which is composed of one or more glass-fabric layers (6) and mica layers (5). Only essentially the interspaces of the glass fabric (6) which is made up of glass threads (7) are filled with a resin (8) which is provided with a filler containing microscopically small particles (9) having a thermal conductivity which is greater than that of the resin. To protect the glass threads (7) of the fabric, its threads (7) are provided with a protective coating (10) of resin or lacquer, said protective coating (10) essentially only surrounding the threads of the glass fabric (6), but otherwise not completely filling the interspaces of the fabric. A main insulation made up of such an insulating tape fulfils all the requirements with regard to mechanical and thermal stability and electrical strength.
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patent: 4606785 (1986-08-01), Zeise
patent: 4806806 (1989-02-01), Hjortsberg et al.
patent: 5079077 (1992-01-01), Sakayanagi et al.
Asea Brown Boveri Ltd.
Page Thurman K.
Shelborne Kathryne E.
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