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US 4,400,430 AGranted
Magnet wires
AssigneeSumitomo Electric Industries, Ltd.
InventorsMasayoshi Miyake, Isao Ueoka, Munetaka Kawaguchi
Life of this patent
Estimating the term…
Abstract
A magnet wire comprising a layer of baked enamel formed on the conductor either directly or through another insulation is disclosed. At least the outermost layer of the wire has an insulation coating formed by applying and baking an enamel composition consisting essentially of a polyamide at least one molecule of which is terminated with a straight alkyl group having 21 or more carbon atoms.
Claims7
A magnet wire, comprising:
- an electrical conductor core;
- and
- at least one outermost insulation layer surrounding the core, the layer being formed by applying and baking an enamel composition consisting essentially of a polyamide polymer at least one molecule of which is terminated with a straight chain alkyl group having 21 or more carbon atoms, the straight chain alkyl group being contained in the polyamide in an amount of 0.3 to 3.5% by weight.
Dependencies are inferred from the claim text.