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:
Dec. 27, 2011
Filed:
Nov. 08, 2007
Frank Auer, Herbrechtingen-Bolheim, DE;
Gerhard Behr, Altheim, DE;
Peter Helbig, Sontheim/Brenz, DE;
Christian Seichter, Herbrechtingen, DE;
Klaus Wittmann, Sontheim, DE;
Sascha Zelt, Beimerstetten, DE;
Frank Auer, Herbrechtingen-Bolheim, DE;
Gerhard Behr, Altheim, DE;
Peter Helbig, Sontheim/Brenz, DE;
Christian Seichter, Herbrechtingen, DE;
Klaus Wittmann, Sontheim, DE;
Sascha Zelt, Beimerstetten, DE;
Osram AG, Munich, DE;
Abstract
The invention relates to a halogen bulb comprising two filaments that are located () in a lamp body (), a first filament () being designed for operation at a higher electrical output than the second filament (). To fulfil a daylight driving function, the second filament () is designed to produce an electrical output that is lower by a factor of 2.5 to 4 than the electrical output of the first filament () when operating with a standard operating voltage and is designed in such a way that it can be operated with an operating voltage that is lower than the standard operating voltage in order to produce a dimmed position light function.