Global Patent Index - EP 1040510 A1

EP 1040510 A1 2000-10-04 - A METHOD FOR PROLONGING THE LIFE OF A GAS DISCHARGE LAMP

Title (en)

A METHOD FOR PROLONGING THE LIFE OF A GAS DISCHARGE LAMP

Title (de)

VERFAHREN ZUM ERHÖHEN DER GEBRAUCHSDAUER EINER GASENTLADUNGSLAMPE PROCEDE D'ALLONGEMENT DE LA DUREE DE VIE D'UNE LAMPE A DECHARGE DANS UN GAZ

Title (fr)

PROCEDE POUR PROLONGER LA VIE D'UNE LAMPE A DECHARGE GAZEUSE

Publication

EP 1040510 A1 (EN)

Application

EP 98952864 A

Priority

  • GB 9803324 W
  • GB 9725388 A

Abstract (en)

[origin: WO9928948A1] A method for increasing the useful life of a gas discharge lamp having an envelope (1) comprising quartz or a high silica content glass and a neon gas fill, includes placing a heat sink (3) in thermal contact with the envelope (1) in use, thereby reducing diffusion of the neon gas through the envelope. Additionally, an optional flexible or resilient thermally conductive layer (9) may be placed between the heat sink (3) and the envelope (1) such that it is in thermal contact with both the heat sink and the envelope, thereby improving the uniformity of heat flow.

IPC 1-7 (main, further and additional classification)

H01J 61/52

IPC 8 full level (invention and additional information)

H01J 61/52 (2006.01)

CPC (invention and additional information)

H01J 61/52 (2013.01)

Citation (search report)

See references of WO 9928948A1

Designated contracting state (EPC)

DE FR GB SE

EPO simple patent family

WO 9928948 A1 19990610; AU 1041299 A 19990616; AU 738895 B2 20010927; CA 2312895 A1 19990610; EP 1040510 A1 20001004; GB 9725388 D0 19980128

INPADOC legal status


2002-11-13 [18R] REFUSED

- Effective date: 20020527

2001-08-01 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010618

2000-10-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000626

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB SE