Photoflash lamp

Claim 2

A high-voltage pulse actuated photoflash lamp comprising a sealed bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship established at least in part by the presence of electrically insulating material between said inleads, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inleads which includes conductive primer material being disposed upon one of said inlead wires and an electrically conductive film spaced from said one inlead wire and interconnecting said primer material and the other inlead wire, insulating means protecting all of said one inlead except that portion exposed to the primer material, said conductive film being disposed adjacent said mass of filamentary combustible material and having contast therewith.

Claim 3

A lamp as in claim 1 wherein a sleeve of electrically insulating material is disposed along the length of at least one inlead.

Claim 4

A lamp as in claim 1 wherein one of said inlead wires extends further into the bulb than the other inlead wire.

Claim 5

A lamp as in claim 1 wherein the electrically conductive film further interconnects the mass of metallic coombustible material at a location remote from the ignition means.

Claim 6

A high voltage pulse actuated photoflash lamp comprising a sealed bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship wherein one of said inlead wires extends further into the bulb than the other inlead wire and has a sleeve of electrically insulating material being disposed along part of its length, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inlead wires which includes a mass of conductive primer material being disposed upon the unsleeved portion of the sleeved inlead wire and an electrically conductive film spaced from said sleeved inlead wire and interconnecting the primer mass with the other inlead wire, said conductive film being disposed adjacent said mass of metallic combustible material and having contact therewith.

Claim 7

A high voltage pulse actuated photoflash lamp comprising a sealed bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship wherein one of said inlead wires extends further into the bulb than the other inlead wire and has a sleeve of electrically insulating material being disposed along part of its length, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inlead wires which includes a mass of conductive primer material being disposed upon the unsleeved portion of the sleeved inlead wire and an electrically conductive film spaced from said sleeved inlead wire and interconnecting the primer mass with the other inlead wire, said conductive film being disposed adjacent said mass of metallic combustible material and having contact therewith.

Claim 8

A lamp as in claim 5 wherein the electrically conductive film further interconnects the mass metallic combustible material at a location remote from the ignition mass.

Claim 9

A high-voltage pulse actuated photoflash lamp comprising a sealed bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship wherein one of said inleads wires extends further into the bulb than the other inlead wire and both of said inlead wires have sleeves of electrically insulating material being disposed along parts of their respective lengths, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inlead wires which includes a mass of conductive primer material being disposed upon the unsleeved portion of the inlead wire extending further into the bulb and an electrically conductive film providing a coating upon said primer mass and spaced from the inlead extending further into the bulb and connected with the other inlead wire, said conductive film being disposed adjacent said mass of metallic combustible material and having contact therewith.

Claim 10

A high-voltage pulse actuated photoflash lamp comprising a sealed bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship wherein one of said inleads wires extends further into the bulb than the other inlead wire and both of said inlead wires have sleeves of electrically insulating material being disposed along parts of their respective lengths, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inlead wires which includes a mass of conductive primer material being disposed upon the unsleeved portion of the inlead wire extending further into the bulb and an electrically conductive film providing a coating upon said primer mass and spaced from the inlead extending further into the bulb and connected with the other inlead wire, said conductive film being disposed adjacent said mass of metallic combustible material and having contact therewith.

Claim 11

A lamp as in claim 7 wherein the electrically conductive film further interconnects the mass of metallic combustible material at a location remote from the ignition means.

Claim 12

A high-voltage pulse actuated photoflash lamp comprising a seAled bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship established at least in part by the presence of electrically insulating material between said inleads, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inlead wires which includes a mass of electrically conductive primer material being disposed upon one of said inlead wires, an electrically conductive film providing a coating upon said primer mass which extends to the other inlead wire, and a dielectric barrier layer associated with the primer mass to preclude a conductive path therethrough.

Claim 13

A high-voltage pulse actuated photoflash lamp comprising a seAled bulb of light transparent material, a pair of inlead wires extending into said bulb in a spaced apart relationship established at least in part by the presence of electrically insulating material between said inleads, a mass of metallic combustible material substantially filling said bulb, a combustion supporting atmosphere in said bulb, and ignition means connected between said inlead wires which includes a mass of electrically conductive primer material being disposed upon one of said inlead wires, an electrically conductive film providing a coating upon said primer mass which extends to the other inlead wire, and a dielectric barrier layer associated with the primer mass to preclude a conductive path therethrough.

Claim 14

A lamp as in claim 9 wherein a sleeve of electrically insulating material is disposed along the length of at least one inlead.

Claim 15

A lamp as in claim 9 wherein one of said inlead wires extend further into the bulb than the other inlead wire.

Claim 16

A lamp as in claim 9 wherein the electrically conductive film further extends to the mass of metallic combustible material at a location remote from the ignition means.