Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-10-17
2006-10-17
Kim, Paul D. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S417000, C029S592100, C029S602100, C029S605000, C029S829000, C029S831000, C156S089110, C156S089120, C336S176000, C336S200000, C336S212000, C336S229000, C336S234000, C427S117000, C427S118000, C427S119000, C427S120000
Reexamination Certificate
active
07120993
ABSTRACT:
On a surface of a glass cloth adhered a mica layer sheet, a mixture of inorganic particles having a thermal conductivity of at least 5 W/mK, a resin, and a solvent is applied to form a layer of the mixture of the inorganic particles, the resin, and the solvent; the layer of the mixture is reduced in thickness using a doctor blade, followed by pressurizing to form a high thermally conducting layer; the mica layer sheet on which the high thermally conducting layer is disposed is cut to obtain a mica insulating tape; and the mica insulation tape is wound around a coil conductor. As a result, an insulated coil that is excellent in the voltage endurance characteristics and has a high thermal conductivity is manufactured.
REFERENCES:
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“High-current density coils for high-radiation environments”; Harvey, A.; Magnetics, IEEE Transactions on vol. 17, issue 5; Sep. 1981 pp. 1717-1719.
Brütsch et al, New High Voltage Insulation with Increased Thermal Conductivity,EEIC/ICWA Conference in Chicago, 1993, pp. 323-327.
Bito Wataru
Goshima Koichi
Isooka Toshio
Yamamoto Shigeyuki
Kim Paul D.
Leydig , Voit & Mayer, Ltd.
Mitsubishi Denki & Kabushiki Kaisha
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