Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1997-09-26
1999-08-03
O'Shea, Sandra
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313634, H01J 162, H01J 6304, H01J 1716, H01J 6130
Patent
active
059329610
ABSTRACT:
A closed-loop, tubular lamp envelope and methods of manufacturing closed-loop, tubular lamp envelopes are disclosed. A dome is formed at one end of a light-transmissive tube. A blister is molded on the dome, and a hole is formed in the molded blister. Next, a dome is formed at the other end of the light-transmissive tube. A blister is formed on the dome, and a second hole is formed in the molded blister. Each of the molded blisters includes a rim which defines the respective hole. A second tube is processed in the same way. The respective rims at the ends of the first and second tubes are fused together to form a sealed, closed-loop lamp envelope. Each tube may be bent to provide a desired shape of the lamp envelope. The molding of the rims insures that the sealing surfaces match.
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Anderson, John M., Electrodeless Fluorescent Lamps Excited by Solenoidal Electric Fields, Illuminating Engineering (Apr. 1969), pp. 236-244.
Lima Joseph V.
Wentzel David C.
Zaslavsky Gregory
Bessone Carlo S.
Haynes Mack
O'shea Sandra
Osram Sylvania Inc.
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