Insulated coil

Details Insulated coil Insulated coil

1982-01-06

1983-11-29

Dixon, Jr., William R.

Electricity: conductors and insulators

Conduits, cables or conductors

Insulated

310208, 428251, 428252, 428267, 428268, 428324, 428363, H01B 702, H01H 8502, B32B 516, B32B 700

Patent

active

044182414

ABSTRACT:
An insulated coil formed by a method, comprising: (a) heat bonding an integrated mica sheet (1) to an aromatic polyamide fibril sheet (2), said integrated mica sheet obtained by forming a mixture of mica flakes and aromatic polyamide fibrils into a sheet and said aromatic polyamide fibril sheet obtained by impregnating an insulating cloth or glass fiber cloth with aromatic polyamide fibrils; (b) treating the integrated sheet material obtained with a thermosetting resin; (c) wrapping an electric conductor with the integrated sheet material; (d) impregnating the wrapped electric conductor with a thermosetting resin under the force of a vacuum or a vacuum-pressure treatment, and (e) molding the resin impregnated wrapped conductor while heating the same.

REFERENCES:
patent: 3775628 (1973-11-01), Andersson et al.
patent: 4033805 (1977-07-01), Mitsui et al.
patent: 4273825 (1981-06-01), Nishiyama et al.
patent: 4286010 (1981-08-01), Staley et al.
patent: 4335367 (1982-06-01), Mitsui et al.

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