GEAR TO REMOVE PISTON OUT OF LIGHT GAS GUN Russian patent published in 1999 - IPC

FIELD: gas dynamics equipment. SUBSTANCE: gear is intended for removal of piston from passage of light gas gun, it is related to devices of gas dynamic action. Gear includes powder charge, initiating unit and is positioned in cylindrical passage of gun. Piston-countermass has initiating unit placed in through longitudinal passage and knock-out powder charge is located between removed piston and piston-countermass. Additional ignition compound can be placed in through longitudinal passage of the latter and knock-out powder charge can be positioned in its space on side of removed piston. Owing to possibility of installation of piston-countermass in unspecified section of passage of light gas gun charge burns within minimally needed space independent of depth of penetration of removed piston into passage. EFFECT: reduced labor input for manufacture of removing equipment and consumption of powder for piston pressing off. 2 cl, 3 dwg