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US 4,365,127 AGranted
Vacuum power interrupter
AssigneesKabushiki Kaishi Meidensha, Kabushiki Kaisha Gemvac
InventorsShinzo Sakuma, Junichi Warabi
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AssigneesKabushiki Kaishi Meidensha, Kabushiki Kaisha Gemvac
InventorsShinzo Sakuma, Junichi Warabi
Estimating the term…
A vacuum power interrupter is constituted by a vacuum vessel (21) consisting of a bell shaped metal casing (20) having substantially the same coefficient of thermal expansion as that of ceramic, and an insulating circular end plate (19, 19a), having a circular bore (24) in the center thereof, hermetically brazed to the opening end of the casing. The vacuum power interrupter comprises stationary and movable contact rods (38, 35), each having an electrical contact (22, 23) on the one end thereof, aligned in the axial direction of the vacuum vessel so that the latter is movable relative to the former, an arc-shield member (30) disposed within the vacuum vessel so as to surround electrical contacts, and a bellows (33) having one end hermetically brazed to the one end of the movable contact rod, and the other end hermetically brazed to the inner circumferential surface of the insulating end plate through an annular extended portion of the arc-shield member.
A vacuum power interrupter constituted by a vacuum vessel comprising an insulating circular end plate of ceramic, and a bell shaped metal casing, having substantially the same coefficient of thermal expansion as that of ceramic, fitted over the outer periphery of said end plate and hermetically brazed thereto, the vacuum power interrupter comprising a stationary contact rod, having a stationary electrical contact on the one end thereof, supported by the bottom portion of said casing so that the one end thereof extends in the axial direction of said casing, a movable contact rod, having a movable electrical contact on the one end thereof, aligned with said stationary contact rod so that it is movable relative to said stationary contact rod, and a cylindrical arc-shield member disposed within the vacuum vessel so as to surround stationary and movable electrical contacts.
Dependencies are inferred from the claim text.