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:
Dec. 14, 2004
Filed:
Jul. 30, 2003
Hirohide Aoki, Tokyo, JP;
Hiroyuki Hama, Tokyo, JP;
Takuya Ootsuka, Tokyo, JP;
Kouichi Oosumi, Tokyo, JP;
Yoshinori Shimizu, Tokyo, JP;
Kiyoshi Inami, Tokyo, JP;
TMT&D Corporation, Tokyo, JP;
Abstract
A compact and economical gas-insulated switchgear is provided. The gas-insulated switchgear includes: a grounding metal housing filled with insulating gas, and in which the disconnector part having a moving side electrode part and a stationary side electrode part is accommodated; and composite insulating shields integrally formed into one metal-dielectric member in which surface of a high electric field part located in the vicinity of ends of openings is coated with a dielectric so as to cover the moving side and stationary side electrode parts and with the dielectric. To form the composite insulating shields , a metal shield of less than 0.6 in non-uniform constant before coating with the dielectric is coated with dielectrics having a thickness of not more than approximately 30% of an inter-electrode distance from a facing electric-field relaxation shield.