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:
Oct. 25, 2016
Filed:
Jun. 12, 2013
Enig Associates Inc., Bethesda, MD (US);
Fred Irvin Grace, York, PA (US);
Yil Bong Kim, Silver Spring, MD (US);
Eric N. Enig, Bethesda, MD (US);
ENIG ASSOCIATES INC., Bethesda, MD (US);
Abstract
A gun system for launching a projectile that forms a component of a two-part payload that also includes a pusher that is separable from the projectile. The system includes a barrel, a source of propellant gas to propel the projectile and the pusher through the barrel, and a retarding coil and an accelerating coil, each having a coil axis parallel to the barrel axis and surrounding a projectile passage through the barrel, the retarding coil being disposed closer to the source of propellant gas than the accelerating coil. The retarding coil is configured to generate electromagnetic energy in response to passage of the pusher when being propelled by propellant gas ignition, and the accelerating coil is configured and coupled to impose an accelerating force on the projectile in response to the electromagnetic energy generated by the retarding coil.