EP 0341749 A3 19910327 - IMPROVED ARC TUBE FOR HIGH PRESSURE METAL VAPOR DISCHARGE LAMP, LAMP INCLUDING SAME, AND METHOD

Title (en)

IMPROVED ARC TUBE FOR HIGH PRESSURE METAL VAPOR DISCHARGE LAMP, LAMP INCLUDING SAME, AND METHOD

Publication

EP 0341749 A3 19910327 (EN)

Application

EP 89108640 A 19890512

Priority

US 19406088 A 19880513

Abstract (en)

[origin: EP0341749A2] An arc tube for a high pressure metal vapor discharge lamp is provided. The arc tube of the present invention comprises a tubular ceramic envelope; a chemical fill within said envelope; a seal button at each end of said envelope; said seal button having an aperture therethrough for receiving a feedthrough member; a feedthrough member having an electrode projecting therefrom passing through said seal button aperture and being oriented such that the electrode projects into said tubular ceramic envelope, said feedthrough member being sealed into said seal button by means of a fritless seal between said seal button and said feedthrough; and sealing frit material sealing said seal buttons into the ends of said tubular ceramic envelope. A method for fabricating the above-described arc tube and high pressure metal vapor discharge lamp including the above-described arc tube is also provided.

IPC 1-7

H01J 61/36; H01J 9/32

IPC 8 full level

H01J 9/32 (2006.01); H01J 61/36 (2006.01)

CPC (source: EP)

H01J 9/323 (2013.01); H01J 61/366 (2013.01)

Citation (search report)

[YD] EP 0136505 B1 19881102
[Y] US 3564328 A 19710216 - BAGLEY RODNEY D, et al
[Y] FR 2326035 A1 19770422 - PHILIPS NV [NL]
[YD] US 4713580 A 19871215 - SCHOENE CARL M [US]
[Y] PATENT ABSTRACTS OF JAPAN vol. 2, no. 47 () 29 March 1978; & JP-A-53 004 384 (HITACHI SEISAKUSHO K. K.) 14 January 1978,
[A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 293 (E-443)(2349) 4 October 1986; JP-A-61 110 932 (TOSHIBA CORP.) 29 May 1986,

Designated contracting state (EPC)

BE DE FR GB NL

DOCDB simple family (publication)

EP 0341749 A2 19891115; EP 0341749 A3 19910327; EP 0341749 B1 19970102; DE 68927594 D1 19970213; DE 68927594 T2 19970724; JP H0265047 A 19900305

DOCDB simple family (application)

EP 89108640 A 19890512; DE 68927594 T 19890512; JP 11885589 A 19890515