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. 07, 2012
Filed:
Mar. 29, 2007
Applicants:
Hiroki Ichikawa, Gamagori, JP;
Kiyohito Katsumata, Numazu, JP;
Yukihiro Takeshita, Numazu, JP;
Kazuhiro Nagatake, Numazu, JP;
Inventors:
Hiroki Ichikawa, Gamagori, JP;
Kiyohito Katsumata, Numazu, JP;
Yukihiro Takeshita, Numazu, JP;
Kazuhiro Nagatake, Numazu, JP;
Assignee:
Japan AE Power Systems Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 33/666 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vacuum circuit breaker includes a movable-side conductor that is tubular and comprises an inside cavity. A movable side contact case includes a chamber which communicates with a space on a non-vacuum side of a bellows. The chamber is isolated from a space filled with insulating gas in a ground tank by a sealing device. The chamber communicates with an outside atmosphere through the inside cavity of the movable-side conductor.