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:
May. 29, 2007
Filed:
Jun. 20, 2006
Masato Kobayashi, Hitachi, JP;
Kenji Tsuchiya, Hitachi, JP;
Satoru Kajiwara, Hitachi, JP;
Daisuke Sugai, Hitachi, JP;
Hironori Tonosaki, Hitachi, JP;
Masato Kobayashi, Hitachi, JP;
Kenji Tsuchiya, Hitachi, JP;
Satoru Kajiwara, Hitachi, JP;
Daisuke Sugai, Hitachi, JP;
Hironori Tonosaki, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed is a vacuum switchgear comprising an electro-conductive outer vacuum container, a plurality of inner container disposed in the outer vacuum container. The inner containers and the outer container are electrically isolated from each other. The outer container is made of stainless steel plate, for example. One of the inner vacuum containers accommodates a ground switch for keeping the circuit open while the switchgear is opened, having a movable electrode connected to an operating mechanism, and a fixed electrode connected to fixed electrode rod. Another inner vacuum container accommodates a function switch capable of having at least one of functions of a circuit breaker, a disconnector and a load switch. A plurality of electrode shields each surrounds the electrodes of the ground switch and of the function switch. The ground switch and the function switch are disposed in separate vacuum inner containers, respectively.