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:
Apr. 10, 2007
Filed:
Sep. 15, 2006
Tadahiro Shimozono, Yachiyo, JP;
Takeshi Obata, Narashino, JP;
Koichiro Saito, Funabashi, JP;
Osamu Matsumoto, Yachimata, JP;
Kouji Obata, Hitachi, JP;
Tadahiro Shimozono, Yachiyo, JP;
Takeshi Obata, Narashino, JP;
Koichiro Saito, Funabashi, JP;
Osamu Matsumoto, Yachimata, JP;
Kouji Obata, Hitachi, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
A frequency converter for outputting a power to drive a motor, having: an inverter unit for inverting a d.c. power to an a.c. power; a control unit for controlling the inverter unit; and a housing for supporting at least the inverter unit and control unit, wherein a rise time change unit is provided in the housing, the rise time change unit changes a rise time of a waveform of a voltage output from the inverter unit.