Patent · US Expired

Discharge lamp

US6642640B1 · kind B1 · utility

1Cited by

17References

9Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Peter Helbig · Sontheim, DE
Uwe Kantim · Niederstotzingen, DE
Gerwin Thiel · Munich, DE

Key dates

Filing date	Jun 7, 2001
Grant date	Nov 4, 2003
Priority date	—
Expiry date	Sep 1, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01J5/62
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

To ensure reliable electric contact, a discharge lamp has a tubular lamp vessel (1), a lamp base (4) and lamp electrodes (2, 3) which are applied to the wall of the lamp vessel (1) and in each case have an electrode section (20, 30) which is arranged outside the interior (11) of the lamp vessel (1) and serves as supply lead. The electric base contacts (5, 6) are connected in each case to an electrically conductive spring element (8, 9), each spring element (8, 9) bearing against the wall of the at least one tubular lamp vessel (1) and making an electric contact between in each case one electrode section (20, 30), arranged outside the lamp vessel (1), and a base contact (5, 6).

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