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:
Jan. 05, 2010
Filed:
Nov. 12, 2004
Masayuki Hirota, Narashino, JP;
Satoshi Ibori, Yatimata, JP;
Naoki Takata, Narashino, JP;
Masahiro Hiraga, Yotsukaidou, JP;
Masayuki Hirota, Narashino, JP;
Satoshi Ibori, Yatimata, JP;
Naoki Takata, Narashino, JP;
Masahiro Hiraga, Yotsukaidou, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Chiba, JP;
Abstract
The invention provides a technique and a product in which for a frequency converter supplying electric power to, for example, a motor, a downsizing, lightening or the like of the frequency converter is realized while providing a filter apparatus reducing electromagnetic noises and the like. The filter apparatus reducing electromagnetic noises and the like is provided near a main circuit terminal board of the frequency converter, and the filter apparatus is connected directly to a main circuit terminal as a wiring drawing portion of the frequency converter. Part of a housing of the frequency converter and part of a filter housing are fitted to each other to fix the filter housing to the frequency converter.