Percussion ignition system for a smokeless, flashless, low noise cartridge

A percussion ignition system for a closed combustion cartridge which comprises:

• a cartridge case having a forward open end and a rear end;
• a base fixedly positioned in the rear end of said case, said base having an axial bore therein and an annular cavity which communicates with said axial bore;
• a cartridge impact primer fixedly positioned in said axial bore;
• a round slidably positioned in said case;
• delay means, axially positioned in the rear end of said round, for actuating said round after said round is expelled from said case;
• sealed telescoping means, positioned in said case intermediate said base and the rear end of said round, for propelling said round out of said case toward a target without evidence of smoke or flash;
• ignition means, positioned intermediate said telescoping means and said delay means, for initiating said delay means when said round is being propelled from said case;
• and
• propelling means, slidably positioned in the annular cavity of said base, for generating gases which rapidly expand said telescoping means and for impacting against said telescoping means to activate said ignition means.