Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For filament
Patent
1996-02-28
1998-09-15
O'Shea, Sandra L.
Electric lamp and discharge devices
With support and/or spacing structure for electrode and/or...
For filament
313279, 313272, H01J 188, H01J 1942, H01J 194, H01J 1948
Patent
active
058083995
ABSTRACT:
Disclosed are a process for fixing a filament onto a support in an incandescent lamp in which the filament is prevented from being deformed when it is welded onto a support and also a filament supporting structure to be established by the process. The filament fixing process comprises wrapping a foil body around each supporting end portion of a filament; squeezing the wrapped foil body together at positions close to each end thereof to form a cylindrical portion and a fin-like portion protruding from the cylindrical portion; and welding the cylindrical portion onto a support (e.g. a support wire or a supporting piece of a shade) for the filament such that the fin-like portion of the foil body may be situated within the distance or range corresponding to the diameter of the cylindrical portion as measured from the surface of the support.
REFERENCES:
patent: 3524693 (1970-08-01), Kubo et al.
patent: 3612940 (1971-10-01), Sims
patent: 4801845 (1989-01-01), Kiesel
patent: 4896074 (1990-01-01), Williams et al.
patent: 5043624 (1991-08-01), Hirozumi et al.
Haynes Mack
Koito Manufacturing Co. Ltd.
O'Shea Sandra L.
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