The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1994
Filed:
Mar. 31, 1993
Atsushi Higashiura, Hiratsuka, JP;
Fumikazu Sano, Hiratsuka, JP;
Yoshitaka Tokimori, Anjo, JP;
Yoshitaka Natsume, Kariya, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
The present invention provides a magnet wire having a high heat resistance, a conductor, and an inner layer formed by baking a first resin coating covering the outer surface of the conductor. The inner layer has a heat resistance which is not lower than 130.degree. C. and is lower than 200.degree. C. An outer layer is formed by baking a second resin coating covering the outer surface of the inner layer, the outer layer having a heat resistance which is not lower than 200.degree. C., the thickness of the lower layer falling within a range of between 0.3 .mu.m and 5 .mu.m and being not larger than 1/3 of the sum of the thicknesses of the outer and inner layers. The present invention also provides a method of removing an insulating covering from a magnet wire having a high heat resistance comprising the steps of: preparing a magnet wire having a high heat resistance, and irradiating an insulating covering of said magnet wire with a converged laser beam having a high energy.