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US 5,313,030 AGranted
Vacuum switch
AssigneeSiemens Aktiengesellschaft
InventorsJoerg Kusserow, Roman Renz
Life of this patent
Estimating the term…
Abstract
A vacuum switching tube has a cylindrical housing, including an insulator which directly surrounds contact pieces of the tube. The radial distance of the insulator from the contact pieces is less than or at most equal to the length of the contact stroke. In addition, the contact pieces can be structured as axial magnetic field contacts, and the free cross-section can be narrowed in the back space of the contact pieces by radial expansion at the contact pins or by radial constriction of the insulator.
Claims12
A vacuum switching tube, comprising:
- a fixed contact piece;
- an axially movable contact piece having a predetermined contact stroke;
- a cylindrical housing surrounding said fixed and axially movable contact pieces, said cylindrical housing having two end surfaces and at least one hollow cylinder insulator, said cylindrical insulator surrounding said fixed and axially movable contact pieces;
- wherein a radial distance of said insulator from each of said contact pieces is less than or equal to said contact stroke;
- a metallic end plate arranged at each of said end surfaces of said cylindrical housing;
- and
- a contact pin associated with each of said contact pieces, each contact pin connecting a corresponding contact piece with its corresponding metallic end plate.
4 more elements
Dependencies are inferred from the claim text.