Global patent index - EP 1006552 A1

EP 1006552 A1 2000-06-07 - Method of making a ceramic arc tube for metal halide lamps

Title (en)

Method of making a ceramic arc tube for metal halide lamps

Title (de)

Verfahren zur Herstellung eines keramischen Bogenröhres für Metallhalogenidlampen

Title (fr)

Procédé de fabrication d'un tube d'arc en céramique pour lampes à halogénures métalliques

Publication

EP 1006552 A1 (EN)

Application

EP 99123779 A

Priority

US 20319098 A

Abstract (en)

A method of making a ceramic arc tube for a metal halide lamp comprises the steps of forming as an integral unit a hollow body having one open end and a substantially closed end. The substantially closed end includes an outwardly extending capillary tube having an electrode receiving aperture therein that communicates with the hollow body. An end cap is then formed for closing the open end. The end cap comprises an annular portion and an extending capillary tube. The end cap is fitted into the open end of the hollow body to form a pre-assembly. The pre-assembly is then fired to seal the end cap to the hollow body to form an assembly and the assembly is subsequently fired to sinter the same. <IMAGE>

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

H01J 9/24; H01J 61/30; H01J 61/82

IPC 8 full level (invention and additional information)

H01J 9/24 (2006.01); H01J 61/30 (2006.01)

CPC (invention and additional information)

H01J 9/247 (2013.01); H01J 61/30 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE FR GB IT NL

EPO simple patent family

EP 1006552 A1 20000607; CN 1255724 A 20000607; JP 2000277013 A 20001006

INPADOC legal status

2003-12-10 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030603

2001-02-21 [AKX] PAYMENT OF DESIGNATION FEES

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- Free Format Text: BE DE FR GB IT NL

2001-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001205

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE FR GB IT NL

2000-06-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI