Percussively ignited photoflash lamp and method of making same
AssigneeGTE Sylvania Incorporated
InventorsJohn F. Waymouth, Andre C. Bouchard, Richard A. Fowler, Harold H. Hall, Jr.
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Abstract
A percussively-ignited photoflash lamp having an hermetically-sealed glass envelope containing no glass-to-metal seals therein. Ignition of the lamp is achieved by applying a percussive force (e.g. striking) to an external surface of the envelope which results in actuation of an ignition means disposed within the envelope. The ignition means, preferably a frictionally disposed, spring-loaded wire having a quantity of pressure sensitive primer thereon, ignites a quantity of shredded combustible material (e.g. zirconium) within the envelope to produce the desired flash. A method of making the lamp is also described.
Claims12
A percussively-ignited photoflash lamp comprising:
- an hermetically-sealed, light-transmitting envelope;
- a combustion-supporting atmosphere within said envelope;
- a quantity of filamentary combustible material within said envelope;
- and
- percussively-actuated ignition means disposed within said envelope for igniting said filamentary combustible material in response to the application of a percussive force to the external surface of said envelope;
- said ignition means including a resilient member located between opposed walls of said envelope for engagement therewith, and a quantity of primer material located on said resilient member in contact with an internal surface of the wall of said envelope to receive said precussive force.
Dependencies are inferred from the claim text.