Patent · US Expired

Incandescent lamp for motor vehicle headlamps

US6709130B2 · kind B2 · utility

3Cited by

5References

6Claims

0Family size

Assignee

PÃƒÂ¤tent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH · DE

Inventors

Gerhard Behr · Riedlingen, DE
Peter Helbig · Sontheim, DE
Christian Seichter · Herbrechtingen, DE

Key dates

Filing date	Sep 12, 2002
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Oct 20, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01K1/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a double-filament halogen incandescent lamp for a motor vehicle headlamp. In order to reduce the light shading effects caused by the filament holder, at least one of the power supply wires (8) is provided with a section (8a) that projects out of the common plane of the power supply wires (7, 8, 9) and is guided past the main filament (5), this section (8a) being shaped such that light beams that are emitted by the main filament (5) perpendicular to its filament axis are not obstructed by the power supply wire (8).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.