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:
Feb. 25, 1992
Filed:
May. 28, 1991
Takatsugu Kanbara, Funabashi, JP;
Hiroshi Asabuki, Sakura, JP;
Satoshi Ibori, Funabashi, JP;
Kengo Hasegawa, Sakura, JP;
Kenji Nandou, Matsudo, JP;
Takehiko Yanagida, Tsuchiura, JP;
Naoto Suzuki, Funabashi, JP;
Shigeyuki Baba, Funabashi, JP;
Hiroshi Fujii, Chiba, JP;
Takuji Torii, Ushiku, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an inverter device comprising a main circuit section which switches a power at high speed, having a switching element and a smoothing condenser for smoothing the power supplied to the switching element, and a logic section for controlling the main circuit section, a shielding member is disposed between the main circuit section and the logical section. The shielding member includes a combination of a heat shielding member and an electromagnetic shielding member so as to protect the logic section from heat, electromagnetic noise, and vibration generated in the main circuit section for improving reliability of the inverter device.