The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1988
Filed:
Mar. 09, 1987
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A vacuum switching tube comprises a simply-constructed housing which is established in that cap-like metal portions are soldered blunt to the end faces of a ceramic portion, in that the metal parts comprise a cylindrical region of reduced wall thickness in the region of the ceramic parts, in that a step is formed in the inner wall at the transition to the thick-wall region to the thin-wall region, in that a vapor shield comprises an expanded edge region, and in that the edge region lies against the thin-wall cylindrical region and against the step and is soldered thereto. The tube is suitable for vacuum switching tubes in which the temperature coefficient of the metal portions is not matched to the temperature coefficient of the ceramic portion.