The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 1980
Filed:
Dec. 01, 1977
Harihar D Chevali, Mentor, OH (US);
Thomas A Evans, Mentor, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A photoflash lamp unit is described having a plurality of flash lamps fired individually and in sequence to include a plurality of solid state switching devices each capable of being converted from a high electrical resistance to a low electrical resistance upon activation by either radiant energy or a high voltage pulse. The switch material composition comprises an admixture of a metallic silver source with a sufficient amount of a metal containing material to convert the switch to said low electrical resistance state by the high voltage pulse customarily employed to flash the individual lamps. In this manner, the switch device can be more reliably converted to the conductive state if not already completely converted by radiant energy supplied from an adjacent flash lamp and so provide a conductive path in the electrical circuit.