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. 08, 2005
Filed:
Jan. 22, 2003
Tatsuro Kato, Hitachi, JP;
Tomoaki Utsumi, Hitachi, JP;
Fumihiro Endo, Hitachi, JP;
Kazuo Kobayashi, Hitachi, JP;
Kazuhiro Saito, Hitachi, JP;
Tatsuro Kato, Hitachi, JP;
Tomoaki Utsumi, Hitachi, JP;
Fumihiro Endo, Hitachi, JP;
Kazuo Kobayashi, Hitachi, JP;
Kazuhiro Saito, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention combines sensor portionsof the device for measuring either current flowing through the line from the power inlet to the power outlet or voltage, or both, and bushingsinstalled at either the power inlet or the power outlet, or both, so as to reduce the size of the gas insulating apparatus. Specifically, the above-mentioned sensor portionsare installed in the space inside the porcelain tubethat constitutes the bushings. As this space, it is preferable to use the space on the outer-periphery side of the electric field relaxation memberprovided inside the porcelain tube