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AssigneeGTE Products Corporation
InventorsRobert M. Griffin, Peter R. Gagnon, Stephen J. Leadvaro, Roy C. Martin
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A method for mounting a filament in a double ended incandescent lamp capsule. A filament assembly, including a filament, filament supports attached to each end of the filament and an external lead connected to each filament support, is located in a tubular lamp envelope. The position of the filament relative to the lamp envelope is determined, and the filament is moved to a predetermined position relative to the lamp envelope, if necessary. Then, the lamp envelope is heated sufficiently to cause the lamp envelope to deform into contact with at least one of the filament supports so as to securely anchor the filament support. The heating of the lamp envelope in regions of the filament supports can be performed simultaneously or at different times. One or both filament supports can be anchored by the tacking process.
A method for making a double-ended incandescent lamp capsule having an elongated lamp envelope comprising a central region, first and second seal regions in each end thereof, a first filament-support region between said first seal region and said central region, and a second filament-support region between said second seal region and said central region, said method comprising the steps of:
Dependencies are inferred from the claim text.