EP 0807316 B1 19990428 - PROCESS FOR PRODUCING ELECTRIC INCANDESCENT LAMPS
Title (en)
PROCESS FOR PRODUCING ELECTRIC INCANDESCENT LAMPS
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER ELEKTRISCHEN GLÜHLAMPE
Title (fr)
PROCEDE DE PRODUCTION DE LAMPES ELECTRIQUES A INCANDESCENCE
Publication
Application
Priority
- DE 9600100 W 19960124
- DE 19503026 A 19950131
Abstract (en)
[origin: WO9624157A1] An electric incandescent lamp is disclosed, in particular a low-watt, low-voltage incandescent lamp, as well as a process for producing the same. The lamp has a helical tungsten filament (4) with straight ends (4a, 4b) that are each soldered or welded to a current supply (2, 3). The current supplies (2, 3) are made of a metal with a lower fusion temperature than tungsten. In order to solder or weld the incandescent helical filament (4) to the current supplies (2, 3), the latter are arranged in such a way that the straight ends (4a, 4b) of the helical filament and the preferably hook-shaped ends (2a, 3a) of the current supplies cross each other. The ends (2a, 3a) of the current supplies are quickly heated up to their fusion temperature by a laser. The molten mass flows over the corresponding end (4a, 4b) of the helical filament, so that after the molten mass solidifies the ends of the helical filament are embedded in the metal of the current supplies.
IPC 1-7
IPC 8 full level
H01K 1/16 (2006.01); H01K 3/06 (2006.01); H01K 1/18 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 9624157 A1 19960808; CA 2211857 A1 19960808; CN 1104035 C 20030326; CN 1172550 A 19980204; DE 59601772 D1 19990602; EP 0807316 A1 19971119; EP 0807316 B1 19990428; HU 220536 B1 20020328; HU P9800336 A2 19980629; HU P9800336 A3 20000728; JP H11502663 A 19990302
DOCDB simple family (application)
DE 9600100 W 19960124; CA 2211857 A 19960124; CN 96191694 A 19960124; DE 59601772 T 19960124; EP 96900847 A 19960124; HU P9800336 A 19960124; JP 52316196 A 19960124