Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1995-01-09
1997-11-25
Choi, Kathleen
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428377, 336182, 336223, B32B 1502
Patent
active
056910584
ABSTRACT:
An electrically insulated coil, characterized in that an electrical insulation layer wound around an electrical conductor is formed by laminating layers of glass flakes having a thickness of 0.2-1 .mu.m and a diameter of 40-250 .mu.m on a backing member of a sheet-like electrical insulation material and by impregnating with a semi-cured thermosetting resin. An electrically insulated coil is provided, having an excellent partial discharge resistance as well as having a high dielectric break down strength even when subjected to a large mechanical distortion.
REFERENCES:
patent: 3633140 (1972-01-01), Lake et al.
patent: 3723797 (1973-03-01), Andersson et al.
"Glass-Flake Paper--A New Electrical Insulation Material", Conklin et al, Electrical Manufacturing, Jun. 1958, pp. 87-91.
Higashimura Yutaka
Kamiya Hiroyuki
Miyao Hiroshi
Onoda Mitsuru
Satoo Takanori
Choi Kathleen
Hitachi , Ltd.
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