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:
Jul. 05, 1977
Filed:
Feb. 24, 1976
Hisayasu Mitsui, Yokohama, JA;
Jun-ichi Kamiuchi, Yokohama, JA;
Ryozi Kumazawa, Yokohama, JA;
Kimikazu Umemoto, Yokohama, JA;
Toshimitsu Yamada, Yokohama, JA;
Katsuhiko Yoshida, Yokohama, JA;
Taichi Takechi, Yokohama, JA;
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JA;
Abstract
A compound mica sheet is prepared by bonding a mica sheet to a woven fabric through a powdered epoxy resin with curing agent. The mica sheet holds a cured thermosetting resin composition impregnated therein and has an uncured epoxy resin composition including a curing agent impregnated therein. When thermosetting resin is forcedly impregnated, through vacuum/pressure impregnation, into a coil wound with the compound mica sheet which is adapted for use in medium and high voltage electric apparatus, and then cured, an excellent insulated coil is obtained.