Receptacles – Envelope for electric lamp or similar device – Tv tube
Patent
1996-05-22
1998-03-03
Moy, Joseph M.
Receptacles
Envelope for electric lamp or similar device
Tv tube
445 23, H01J 938
Patent
active
057225494
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.
REFERENCES:
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patent: 3500118 (1970-03-01), Anderson
patent: 3987334 (1976-10-01), Anderson
patent: 4027363 (1977-06-01), Belknap
patent: 4160186 (1979-07-01), Kerekes
patent: 4787865 (1988-11-01), Livzra et al.
patent: 4850500 (1989-07-01), White et al.
patent: 5557170 (1996-09-01), Ooms
Lima Joseph V.
Wentzel David C.
Zaslavsky Gregory
Bessone Carlo S.
Moy Joseph M.
Osram Sylvania Inc.
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