Photoflash switching array and fabrication utilizing silver-oxide coated solids
AssigneeGTE Products Corporation
InventorsMichael R. Kling, Carl F. Kackenmeister
Life of this patent
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Abstract
A sequentially operable multilamp photoflash array includes a plurality of radiation-responsive normally open (N/O) connect type switches which are prepared from a composition which includes a filler material, a binder, silver coated particulate solids and silver-salt coated particulate solids. The switches are fabricated by a process wherein the silver coated particulate solids are stirred in potassium permanganate, added to an admixture of silver coated glass beads, a filler material and an organic binder and deposited onto a printed circuit board.
Claims24
A multilamp photoflash sequential array having at least one radiation-responsive switch including an admixture of a filler material, a binder, silver-coated non-conductive particulate solids and characterized by the improvement wherein said admixture includes silver-salt coated non-conductive particulate solids.
A radiation-responsive switch for a multilamp photoflash array and fabricated from an admixture of filler material, binder material, silver-coated non-conductive particulate solids and characterized by the improvement of the addition of silver-salt covered non-conductive particulate solids.
A radiation-responsive switch fabricating process comprising the steps of:
- stirring silver-coated glass beads in a stoichiometric solution of potassium permanganate (KMnO.sub.4) to provide silver-oxide coated glass beads;
- adding said silver-oxide coated glass beads to an admixture of silver-coated glass beads, a filler material and an organic binder to provide a switch paste;
- and
- depositing said switch paste onto a printed circuit board to provide a plurality of radiation-responsive switches.
Dependencies are inferred from the claim text.