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. 11, 2012
Filed:
Dec. 13, 2006
Norbert Lesch, Vaals, NL;
Jozef Merx, Vaals, NL;
Gerald Scholak, Baesweiler, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A method for manufacturing a discharge lamp comprising at least two tubes or bulbs is disclosed. The lamp is especially a high intensity discharge lamp for use for example in a head lamp of a vehicle, and comprises an inner tube or bulb for enclosing an arc discharge chamber and an outer tube or bulb () for sealingly enclosing the inner tube or bulb, wherein the inner volume of the outer tube or bulb () is evacuated or filled with a gas in an easy and reliable way by using at least one two-step pinching and/or roll-on process for fixation of both tubes at least at one of their axial ends, wherein in a first step the fixation is carried out in such a way that a passage () remains that runs in an at least substantially axial direction of the lamp between the inner volume of the outer tube () and the outside of the axial end () of the inner tube or bulb through which passage the inner volume is evacuated and/or filled with a gas, and wherein in a second step the passage is sealingly closed by carrying out a second pinching or roll-on process.