Patent ID: 8001903

Claim:
A combination of a tracer cylinder and a piercing valve, the combination for use with a shotgun shell having a lower end and an upper end, and further having primer, propellant and a shot cup, the primer and propellant being contained inside the lower end of the shotgun shell, the combination designed for placement inside the upper end of the shot cup, the tracer cylinder comprising a top cap and a container having a sidewall and a bottom, the container holding a liquid material, the piercing valve having an outer edge and further having a perpendicular point positioned adjacent to the bottom of the container, ignition of the propellant forcing the point of the piercing valve to puncture the bottom of the container forming a small opening plugged by the piercing valve, the piercing valve being detached from the bottom of the container by drag forces exerted on the outer edge after the tracer cylinder leaves a shotgun barrel and becomes airborne, with pressure differential causing the liquid material to be extracted from the container through the opening in the bottom of the container in the form of small droplets, creating a mist or fog cloud.