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:
Mar. 20, 2007
Filed:
Aug. 20, 2004
Toshiaki Rokunohe, Hitachinaka, JP;
Yoshitaka Yagihashi, Hitachi, JP;
Fumihiro Endo, Hitachi, JP;
Tomoaki Utsumi, Hitachi, JP;
Shunji Ito, Hitachi, JP;
Takashi Omori, Hitachi, JP;
Toshiaki Rokunohe, Hitachinaka, JP;
Yoshitaka Yagihashi, Hitachi, JP;
Fumihiro Endo, Hitachi, JP;
Tomoaki Utsumi, Hitachi, JP;
Shunji Ito, Hitachi, JP;
Takashi Omori, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Japan AE Power Systems Corporation, Tokyo, JP;
Abstract
In a gas-insulated switchgear tank in which an electric insulating characteristic is improved by a gas, and which has a vacuum circuit-breaker, a disconnecting switch, and a container in which container the vacuum circuit-breaker and the disconnecting switch are arranged and an inside of which container is adapted to be hermetically sealed and filled with the gas in such a manner that the vacuum circuit-breaker and the disconnecting switch are at least partially surrounded by the gas, the gas includes Nand O.