Patent · US Expired

Compact low-pressure discharge lamp

US6707238B2 · kind B2 · utility

0Cited by

5References

22Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Bruno Bachetzky · Augsburg, DE
Andreas Jakob · Untermeitingen, DE
Paul Lange · New Haven, US
Thomas Noll · Kipfenberg, DE

Key dates

Filing date	Dec 17, 2002
Grant date	Mar 16, 2004
Priority date	—
Expiry date	Dec 17, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/327
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A compact low-pressure discharge lamp (1) includes a discharge vessel (3) with electrodes and power supply leads (7), a discharge vessel mount (5) and a cap (12) which has a housing (13), connecting contacts (14) and a mounting plate (15) with a ballast apparatus (16), with the mounting plate (15) being fitted with the ballast arrangement (16) in the interior of the cap housing (13), and having connections for electrical connection of the mounting plate (15) to the power supply leads (7) and to the connecting contacts (14). The discharge vessel mount (5) has an essentially H-shaped cross section and includes a plate (4) with collars (9, 18) running on the edge of each side of the plate. Both the housing (13) of the cap (12) and the cover part, which is in the form of an enveloping bulb (2), a reflector or a closure cap, are mounted on this H-shaped discharge vessel mount (5).

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