Filament-type lamp primer and fabrication process
AssigneeGTE Products Corporation
InventorThomas L. Gavenonis
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Abstract
A filamentary-type photoflash lamp suitable for use with a relatively low voltage high current power source includes a glass envelope with a shredded metal fill, a pair of leads interconnected by a filament wire and a primer having percussively-ignitable and powdered combustible incandescible material on the leads with the primer material responsive to heat generated by the filament wire. A process for fabricating the above-described photoflash lamp is also provided as well as a primer material composition.
Claims14
A filament-type photoflash lamp having a combustion-supporting gas and shredded metal fill contained within a glass envelope with a pair of electrically conductive leads hermetically sealed to and passing through said envelope and interconnected by a filament wire interiorly of the envelope, the improvement comprising a primer including a percussively-ignitable material and a powdered combustible incandescible material disposed within said envelope and responsive to heat generated upon energization of said filament wire to effect activation thereof and of said shredded metal fill whereby the time for initiating actinic light production is reduced.
A primer material for a filamentary-type photoflash lamp responsive to a relatively low wattage high current power source comprising a fuel including a persuasively-ignitable material and a powdered combustible incandescible material in the form of zirconium powder and an oxidizer disposed within said photoflash lamp and contiguous to a filament therein.
Dependencies are inferred from the claim text.