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:
Nov. 06, 2012
Filed:
Nov. 29, 2010
Toshiyuki Uchii, Kanagawa, JP;
Yoshihiko Hirano, Tokyo, JP;
Yoshikazu Hoshina, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
Disclosed is a gas insulated switchgear constituted such that electrical contacts are placed inside a sealed vessel filled with an arc extinguishing gas, and when electrical current passes, the electrical contacts are held in contact and pass electricity, and when the current is interrupted, the electrical contacts are separated and an arc discharge is produced in the arc extinguishing gas, and the current is interrupted by extinguishing this arc. The arc extinguishing gas is a mixed gas, the main constituents of which are Ngas and CHgas, and the CHcontent is at least 30%. Alternatively, the arc extinguishing gas is a mixed gas, the main constituents of which are COgas and CHgas, and the CHcontent is at least 5%.