HYDROPNEUMATIC UNDERWATER SPORTING GUN Russian patent published in 1997 - IPC

FIELD: hydropneumatic underwater sporting guns. SUBSTANCE: gun has a barrel, barrel mouthpiece, receiver, piston dividing the pneumatic and hydraulic spaces of the receiver, grip with the trigger mechanism. To reduce the ejection force at the harpoon at the initial moment of shot and, consequently, to reduce the trigger force, the tail portion of the harpoon, having a seal, at cocking makes up a chamber with a low pressure behind the holes for overflow of water due to provision of a check valve. EFFECT: improved design. 2 dwg