Patent · US Expired

Single-based high-pressure discharge lamp particularly for automotive-type headlights

US5627428A · kind A · utility

10Cited by

5References

4Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Peter Helbig · Sontheim, DE
Gerhard Behr · Riedlingen, DE
Claus Regitz · Overath, DE
Hans-Juergen Keck · Gummersbach, DE

Key dates

Filing date	Jun 27, 1995
Grant date	May 6, 1997
Priority date	—
Expiry date	Jun 27, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH01J9/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

To reliably and simply connect one end of a double-ended discharge vessel it (1) and a surrounding envelope (11) to a base (8), the base has a base sleeve (8a) which encloses a base holder portion (8b). The envelope (11) is melt-connected to the discharge vessel unit (1), for example just beyond pinch seals formed thereon, and is additionally formed with an extension (11a) which is, in turn, melt-connected to the holder portion (8b) of the base. Preferably, a metallic cuff is placed within the holder portion so that, by high-frequency inductive heating, a reception region (8d) of the holder portion can melt and tightly grip the extension (11a) of the envelope. To improve adhesion, the surface of the extension region (11a) may be ribbed, knurled or otherwise, slightly deformed.

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