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. 15, 2018
Filed:
Jul. 22, 2016
Kabushiki Kaisha Toshiba, Tokyo, JP;
Naoki Asari, Tokyo, JP;
Junichi Sato, Tokyo, JP;
Tetsu Shioiri, Saitama, JP;
Yuki Sekimori, Saitama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A vacuum valve according to embodiments of the present disclosure comprise a prescribed shaped vacuum insulation vesselhaving openings on its both ends, sealing metal fittingsconfigured to seal the openings of the vacuum insulation vesselrespectively, and a pair of contact pointswhich can be brought into contact or out of contact with each other and is arranged within the vacuum insulation vessel, wherein the vacuum insulation vesselincludes a base material layerof aluminum oxide, a 1st oxidization promotion layerwhose oxygen combination was promoted, which 1st oxidization promotion layeris formed on the inner circumference of the base material layer, and a 2nd oxidization promotion layerwhose oxygen combination was promoted, which 2nd oxidization promotion layeris formed on the outer circumference of the base material layer