Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1989-07-27
1990-10-09
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01H 3366
Patent
active
049622897
ABSTRACT:
A switch chamber for a vacuum switch including a housing composed of a ceramic insulating tube, a contact pin mounting a stationary contact within the housing and a terminating cover connecting the insulating tube with the contact pin in a vacuum-tight manner. Another contact is positioned adjacent the stationary contact and is movable in the axial direction of the insulating tube. A bellows forms a vacuum-tight connection between the movable contact and the housing. In the switched-on position the movable contact contacts the stationary contact under action of a contact spring force and shock stresses are transferred to the housing by the terminating cover which includes an elastically deformable section and a plastically deformable section. The elastically deformable section has an inner end connected with the contact pin and an outer end connected to the plastically deformable section which in turn is fastened to the ceramic tube thereby forming a vacuum-tight housing and minimizing stresses at the point of connection to the ceramic tube resulting from switching operations, short-circuits and shrinkage caused by manufacturing processes.
REFERENCES:
patent: 3082307 (1963-03-01), Greenwood et al.
"Hutte, " Theoretische Grundlagen, Verlag Von Wilhelm Ernst & Sohn, Berlin, 1955, pp. 1048-1049.
Macon Robert S.
Sachsenwerk Aktiengesellschaft
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