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:
Sep. 09, 1980
Filed:
Sep. 21, 1978
Bela Kerekes, Budapest, HU;
Egyesult Izzolampa es Villamossagi Reszvenytarsasag, Budapest, HU;
Abstract
The high-pressure electric discharge tube of the invention can operate in the open air, with at least 10 Hg mm inner pressure. It has a preferably ceramic (or crystalline) envelope that constitutes an illuminator, with electrodes disposed in two opposite portions of the envelope, appropriate inlets, lead-ins and terminals leading to the electrodes. The discharge tube does not have to be surrounded by the hitherto applied, conventional, glass or other transparent protective envelope, as a result of which the emitted luminous output is free from reflections and the tube can be used throughout the entire spectrum, such as for pumping or driving a laser crystal. The protective envelope, which so far has been an indispensable part of all high-pressure discharge tubes, has been eliminated as a result of the present invention. Adapter tubes are used that prevent oxidation of the electrical elements, as well as specially configured electrodes.