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:
Nov. 12, 1985
Filed:
Aug. 08, 1983
Larry R Fields, Winchester, KY (US);
George B Kendrick, Lexington, KY (US);
GTE Products Corporation, Stamford, CT (US);
Abstract
A multi-filament lamp that includes a tubular envelope having a pinch seal at one end thereof and containing therein a halogen atmosphere. At least two coiled tungsten filaments are disposed in the tubular envelope and are supported so as to be oriented parallel to each other in the longitudinal direction of the envelope. Lead-in wires are provided within the envelope and are hermetically sealed using metal foil strips, these being hermetically sealed within the pinch seal. Outer lead-in wires extend from the pinch seal and are each connected to a respective contact pin. A lead-in wire is associated with each filament and a common lead-in wire is also provided. A wire grid extends longitudinally within the envelope substantially in parallel to the filaments and is disposed therebetween so as to isolate one filament from the other and thereby provide filament redundancy.