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:
Nov. 25, 1997
Filed:
Jan. 09, 1995
Hiroshi Miyao, Hitachinaka, JP;
Yutaka Higashimura, Hitachi, JP;
Makoto Takamura, Hitachi, JP;
Takanori Satoo, Hitachi, JP;
Hiroyuki Kamiya, Hitachi, JP;
Mitsuru Onoda, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
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.