Patent ID: 8919255
Filing Date: 2014-12-30
Classification: F42B

Abstract:
1. A chemiluminescent tracer insert for use with a shotgun shell having a lower end and an upper end, and further having propellant and a shot cup having a first end and an opposing second end and holding shot, the propellant being contained inside the lower end of the shotgun shell below the second end of the shot cup, the tracer insert having a centerline and comprising a resilient, elastic, translucent cylindrical container holding a first reactant, a second reactant, a fluorescent dye, and means for physically separating the first reactant from the second reactant and the fluorescent dye prior to their combination resulting in a chemiluminescent reaction, the tracer insert located inside the upper end directly under the crimped top of the shotgun shell, inside the first end of the shot cup and above the shot held in the shot cup, the cylindrical container having an outer surface having a plurality of integral resilient, elastic thin-flaps, the thin-flaps being symmetrically arranged with respect to the centerline of the tracer insert, each thin-flap having an unattached free end, the tracer insert moving separately from the shot cup and the shot after leaving a shotgun barrel, the free ends of the thin-flaps configured to peel away from the cylindrical outer surface of the container, each of the free ends individually extending elastically outwardly evenly therefrom and curling backwards in a position perpendicular to the flow stream and resulting drag forces acting on the free ends while the tracer insert is in flight, resulting in an increased projected area of the plurality of thin-flaps as the ends of the thin-flaps extend radially with respect to the centerline of the container, the increased projected area perpendicular to the flight path of the insert resulting in an increase in the dynamic pressure drag forces acting on the tracer insert, the increased drag forces thereby decelerating the tracer insert.