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US 4,226,583 AGranted
Photoflash lamp with knurled foil strip
AssigneeGTE Products Corporation
InventorHoward S. Painter
Life of this patent
Estimating the term…
Abstract
A long-duration photoflash lamp comprising a sealed glass bulb containing a gas filling of oxygen and nitrogen, an ignition filament, and a corrugated strip of magnesium foil having a knurled surface for optimizing usable light output.
Claims10
A photoflash lamp comprising:
- a hermetically sealed, light-transmitting envelope;
- a combustion-supporting gas filling in said envelope;
- a corrugated strip of combustible foil disposed in said envelope, said foil having a knurled surface;
- support means for said corrugated strip of knurled foil;
- and
- ignition means disposed in said envelope in operative relationship with respect to said knurled foil.
3 more elements
Dependencies are inferred from the claim text.