The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 1993
Filed:
Dec. 27, 1991
Robert M Griffin, Hamilton, MA (US);
Peter R Gagnon, Topsfield, MA (US);
Stephen J Leadvaro, Salem, MA (US);
Roy C Martin, Peabody, MA (US);
GTE Products Corporation, Danvers, MA (US);
Abstract
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.