Abstract: A vacuum circuit interrupter includes a cylinder made of a metal relatively easy to deform plastically, and first and second insulating disks closing the ends of the metallic cylinder to form therewith an evacuated envelope. A stationary rod enters the envelope through the first disk in such a manner as to provide a seal therewith. A movable conductive rod movably enters the envelope through the second disk. A bellows is fixed at its one end to the movable rod and at its other end to the second disk in such a manner as to provide a seal about the movable rod to allow for movement thereof without impairing the vacuum inside the envelope. Stationary and movable electrodes are connected to the stationary and movable rods respectively in such a manner as to engage and disengage with each other according to the movement of the movable rod.

Abstract: A vacuum circuit interrupter includes an evacuated envelope composed of a plastically deformable metallic cylinder and first and second insulating disks closing the opposite ends of the cylinder. Stationary and movable conductive rods project coaxially through the first and second disks respectively. Stationary and movable electrodes are connected to the stationary and movable rods in such a manner as to engage with each other when the movable rod moves toward the stationary rod and disengage with each other when the movable rod moves away from the stationary rod. A bellows surrounds the movable rod inside the envelope and is fixed at its one end to the movable rod and at its other end to the second disk in such a manner as to provide a seal about the movable rod to allow for movement thereof without impairing the vacuum inside the envelope. A first conductive shield surrounds the stationary rod inside the envelope.

Abstract: A vacuum interrupter envelope including a housing made of non magnetic metallic material with end plates fabricated from insulating material in the form of a ceramic or crystallized glass. Auxiliary sealing members are made of metallic material which are deformable in response to thermal stress at high temperture.

Abstract: A vacuum interrupter for electric power having a vacuum vessel into which a pair of electrode holders each having an electrode contact brazed to the end thereof are in contact with each other when the device is closed and are separated from each other when the device is open.