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. 29, 2011
Filed:
Jul. 29, 2008
István Würsching, Budapest, HU;
József Fülöp, Budapest, HU;
Ferenc Papp, Budapest, HU;
László Bánkuti, Budapest, HU;
János Orbán, Veresegyház, HU;
István Würsching, Budapest, HU;
József Fülöp, Budapest, HU;
Ferenc Papp, Budapest, HU;
László Bánkuti, Budapest, HU;
János Orbán, Veresegyház, HU;
General Electric Company, Schenectady, NY (US);
Abstract
An electric lamp comprises an inner assembly including a light source and a control gear circuit. An outer envelope encloses the light source and at least a part of the control gear and has a predetermined wall thickness and an end portion. The outer envelope is comprised of two parts separated along a circumferential line. The two parts of the envelope are connectable and sealable to form a uniform outer envelope with a seal region. The seal region has a wall thickness and is merged in a surface portion of the two parts of the envelope so that the surface unevenness of the seal region is not greater than 0.5 millimeters, and the maximum difference of the wall thickness of the seal region with respect to the wall thickness of the outer envelope is not greater than 0.3 millimeters. A method for manufacturing an electric lamp as described above is also disclosed. During connecting, and sealing the two parts of the envelope by a welding process,