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:
Jul. 24, 2018
Filed:
Mar. 23, 2015
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Toshiyuki Uchii, Yokohama, JP;
Takeshi Shinkai, Yokohama, JP;
Takanori Iijima, Yokohama, JP;
Tadashi Mori, Yokohama, JP;
Tadashi Koshizuka, Saitama, JP;
Norimitsu Kato, Yokohama, JP;
Hiroshi Furuta, Yokohama, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Abstract
A pair of fixed arc electrodes are arranged facing each other within a sealed container that is filled with arc-extinguishing gas. There are provided: a compression puffer chamber for accumulating pressurized gas that is obtained by elevating the pressure of the arc-extinguishing gas; and an insulated nozzle that directs the pressurized gas towards the arc discharge from the compression puffer chamber. A buffer chamber is provided, in which hot exhaust gas generated by the heat of the arc discharge is temporarily accumulated. A pressurized gas through-flow space is provided, communicating with the compression puffer chamber. In the pressurized gas through-flow space, an opening/closing section prevents inflow of hot exhaust gas by assuming a closed condition during the earlier half of the current interruption period, and in the latter half of the current interruption period the opening/closing sectionis opened to allow flow of pressurized gas.