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:
Jun. 12, 2012
Filed:
Feb. 09, 2007
Kazuyuki Fukui, Tainai, JP;
Katsutoshi Inagaki, Niigata, JP;
Masao Hosokawa, Tainai, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
The iron core characteristics of an amorphous iron core transformer degrade significantly when machining from material into a transformer. This phenomenon is suppressed to improve the iron core characteristics of the finished transformer products. In the present invention, an insulating thin film is formed in at least one side of an amorphous ribbon, and is formed in at least one for each plurality of amorphous ribbons of iron core material. Moreover, in the surface of the amorphous ribbon that is the iron core material of the amorphous iron core transformer, silane or the like is vapor deposited to form an insulating thin film, the insulating thin film being formed in the thickness of approximately 1 μm. With such structure, an increase in eddy current loss occurring when machining from the material into a transformer is suppressed to reduce no-load loss of the transformer.