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:
Mar. 02, 1982
Filed:
Oct. 29, 1979
Applicant:
Inventors:
Assignee:
Heimann GmbH, , DE;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313220 ; 313179 ; 313217 ; 313218 ; 313246 ;
Abstract
A flash tube is disclosed having metallic end caps attached either in the shape of a plate or a cup upon ends of a glass or quartz tube. They are attached by adhesive, or are soldered on by soldering glass. One of the end caps internally supports a sintered body as a cathode. Soldering temperatures and a distance of the sintered body from the soldered joint when soldering glass is used are chosen such that no activating metal of the sintered body evaporates, since this reduces the work function of the electrons at the ends of the tube.