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. 20, 2012
Filed:
Feb. 27, 2007
Kenji Ikeda, Hitachi, JP;
Hisashi Morooka, Hitachinaka, JP;
Keiji Suzuki, Hitachi, JP;
Mitsuru Onoda, Takahagi, JP;
Nobuaki Tanaka, Hitachi, JP;
Kenji Ikeda, Hitachi, JP;
Hisashi Morooka, Hitachinaka, JP;
Keiji Suzuki, Hitachi, JP;
Mitsuru Onoda, Takahagi, JP;
Nobuaki Tanaka, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention is designed to provide an insulation coil with high insulation reliability using a dry mica tape, an integral impregnation coil and a mica tape for the electrical rotating machines using these coils, said mica tape having a long shelf life and capable of preventing run-off of the impregnating epoxy resin composition during curing, with the cured product of said epoxy resin composition being high in heat resistance. It is also envisaged to provide a single insulation coil using a mica tape containing epoxy adduct imidazole as an epoxy resin curing catalyst or a mica tape containing a mixture of epoxy adduct imidazole and zinc naphthenate. An integral impregnation coil made by using said insulation coil and an epoxy resin composition, and the electrical rotating machines using such coils are also provided.