Kabushiki Kaisha Toshiba

Yuki Sekimori

Junichi Sato

Tetsu Shioiri

Yoshimitsu Niwa

Naoki Asari

Wataru Sakaguchi

A vacuum valve according to embodiments of the present disclosure, comprising: an electrode having a first surface which a hollow part is formed on, which electrode spiral electrode slits which slantingly cross an axial direction are formed on outer circumference of, a conductor fixed on a second surface of the electrode, which second surface is opposite side of the first surface, a contact point having a first concavity which opens to the conductor side, which contact point is fixed on the first surface of the electrode, and a connecting plate whose resistivity is lower than one of the contact point, which connecting plate is disposed inside the first concavity, and connecting plate slits which extend inward from circumference as a starting point are formed on, wherein central axes of the connecting plate slits incline in a rotatory direction of the spiral of the electrode slits.

Vacuum valve

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

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Saitama, Japan

Yuki Sekimori