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:
Dec. 28, 2021
Filed:
Dec. 12, 2019
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Kevin L. Callan, Manchester, MO (US);
Andrew M. Singleton, Manchester, MO (US);
Ryan M. Crittenden, O'Fallon, MO (US);
Michael L. Fisher, Foley, MO (US);
Wade Collins, Wentzville, MO (US);
Francis L. Struemph, Villa Ridge, MO (US);
Edward F. Stephens, IV, Golden Eagle, IL (US);
NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US);
Abstract
An optical primer for igniting an ignition material in an ammunition cartridge. The primer includes a conductive cylindrical cup electrically coupled to a cartridge case and a circular conductive button including a top button portion positioned in the cup and a bottom button portion extending through an opening in the cup, where the button and the cup are electrically isolated. The primer further includes a first bracket electrically coupled to the button, a second bracket electrically coupled to the cup, and a pair of laser diodes electrically coupled in a reverse parallel direction and being electrically coupled to the first and second brackets, where one of the laser diodes generate a laser beam that ignites the ignition material in response to a current flow in either direction through the case, the cup and the button.