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:
Sep. 15, 2015
Filed:
Oct. 29, 2009
Kyoichi Ohtsuka, Chiyoda-ku, JP;
Masahiro Arioka, Chiyoda-ku, JP;
Kyoichi Ohtsuka, Chiyoda-ku, JP;
Masahiro Arioka, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
A dead tank vacuum circuit breaker of the invention has an object to obtain a dead tank vacuum circuit breaker in which an immovable end of a vacuum valve is supported on a tank immovable side via an insulating support member and a support frame or the immovable end of the vacuum valve is supported on a tank movable side via an insulating support rod, so that an insulating support member supporting a movable end of the vacuum valve is omitted, while an opening portion is provided to the movable side of the tank and a bushing center conductor has a slidable connection portion that is axially expandable and contractible, so that a de-assembly range can be minimized when the vacuum valve is replaced.