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. 01, 2011
Filed:
Mar. 23, 2007
Naoaki Inoue, Tokyo, JP;
Masahiro Arioka, Tokyo, JP;
Naoaki Inoue, Tokyo, JP;
Masahiro Arioka, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Abstract
A switchgear including a vacuum valve which prevents partial discharges infallibly and whose reliability is high, and a method of fabricating the same are obtained. In a vacuum valvewherein a stationary electrodeand a movable electrodeare disposed within a vacuum vesselwhich is constituted by a metal flangeas well as a metal tubeand an insulating tube, and wherein a resin moldis applied onto the outer peripheral surface of the vacuum vessel; coiled metal-made shieldsand, in each of which a coiled metal wire is brought into an annular shape, are retained on the outer peripheral surface of the vacuum vesselso as to relax the electric fields of the electric field relaxation-requiring partsof the vacuum vessel