AIR-OPERATED HARPOON RIFLE FOR UNDERWATER SHOOTING Russian patent published in 1997 - IPC

FIELD: underwater hunting. SUBSTANCE: air-operated harpoon rifle includes pneumatic accumulator and barrel placed concentrically. Volume of pneumatic accumulator is 10 times higher than volume of barrel. Diameter of harpoon is maximally close to inner diameter of barrel, their difference is not more than 1.0-2.0 mm. Area of hole for throw away of interbarrel water is twice as large as cross-section of barrel. Handle which can be adjusted for length and circumference is mounted on pneumatic accumulator. Loading valve integrated with limiter of piston stroke is located in rear plug of pneumatic accumulator. EFFECT: facilitated manufacture, improved functional reliability and efficiency. 4 dwg