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:
Jul. 10, 2001
Filed:
May. 02, 2000
Toru Tanimizu, Hitachi, JP;
Masato Kobayashi, Hitachi, JP;
Shuichi Kikukawa, Hitachi, JP;
Ayumu Morita, Hitachi, JP;
Minoru Suzuki, Hitachi, JP;
Yoshimi Hakamata, Hitachi, JP;
Katsunori Kojima, Hitachi, JP;
Yozo Shibata, Hitachi, JP;
Yoshitomo Gotoh, Hitachi, JP;
Makoto Terai, Hitachi, JP;
Takuya Okada, Hitachi, JP;
Naoki Nakatsugawa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is disclosed a vacuum insulation switch provided with a movable electrode, a stationary electrode and an earthing electrode, which are insulated from each other, in a vacuum container made of a conductive material which is earthed, and a switchgear using the same. Since the vacuum insulation, which is excellent in the insulation ability, is utilized, the switch is drastically miniaturized and the number of constituent parts are reduced, whereby the manufacturing cost of the switch and the switchgear can be decreased.