EP 1881518 A1 20080123 - Incandescent lamp
Title (en)
Incandescent lamp
Title (de)
Glühlampe
Title (fr)
Lampe à incandescence
Publication
Application
Priority
EP 06015180 A 20060720
Abstract (en)
This invention relates to an electric lamp (10) formed from a quartz tube (30) incorporating a U-bend (33). The filament (20) lies within a hollow central region (31), which is sealed at each end (32) in an airtight manner. Specific positioning means (40) are provided in the lamp (10) for insuring that sections of the filament (20) lie along these central axis of the puartz tube (30).
IPC 8 full level
H01K 1/24 (2006.01); H01K 1/18 (2006.01); H01K 1/32 (2006.01); H01K 3/20 (2006.01)
CPC (source: EP)
H01K 1/18 (2013.01); H01K 1/24 (2013.01); H01K 1/325 (2013.01); H01K 3/20 (2013.01); H01K 5/02 (2013.01)
Citation (search report)
- [DX] US 6400077 B1 20020604 - MICHEL JEAN PIERRE ALAIN [FR], et al
- [A] GB 2300297 A 19961030 - GEN ELECTRIC [US]
- [A] DE 2448348 A1 19750424 - GTE SYLVANIA INC
- [DA] EP 0849769 A2 19980624 - SCHOTT GLAS [DE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1881518 A1 20080123; EP 1881518 B1 20090930; AT E444563 T1 20091015; CN 101110344 A 20080123; DE 602006009501 D1 20091112
DOCDB simple family (application)
EP 06015180 A 20060720; AT 06015180 T 20060720; CN 200710136187 A 20070720; DE 602006009501 T 20060720