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:
Apr. 29, 2014
Filed:
Aug. 11, 2010
Tomoaki Utsumi, Hitachi, JP;
Takashi Shirone, Hitachi, JP;
Takashi Sato, Mito, JP;
Kenji Tsuchiya, Hitachi, JP;
Ayumu Morita, Hitachi, JP;
Tomoaki Utsumi, Hitachi, JP;
Takashi Shirone, Hitachi, JP;
Takashi Sato, Mito, JP;
Kenji Tsuchiya, Hitachi, JP;
Ayumu Morita, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A switchgear includes an earthing and disconnecting switch which linearly moves and is switchable to a disconnecting and an earthing positions, a vacuum valve which performs closing and breaking of a current in a vacuum container producing vacuum inside, and a solid insulator with which the earthing and disconnecting switch and the vacuum valve are covered, therein the earthing and disconnecting switch and the vacuum valve are electrically connected, and closing and breaking of a current is performed in the vacuum valve.