Patent ID: 6591732
Filing Date: 2003-07-15
Classification: F41A

Abstract:
A method for cooling a gun barrel of a firearm comprising the steps of:conveying coolant from a reservoir into a pressure cylinder by drawing up a hydraulic piston, while a pressure feed line between the pressure cylinder and a nozzle is closed, thereafter moving the hydraulic piston in the opposite direction by a pressure reversal, so that the coolant in the pressure cylinder is placed under a predefined operating pressure which is higher than the ambient pressure, opening said pressure feed line to said nozzle before firing a round, so that the coolant flows to the gun barrel via said pressure feed line and nozzle, allowing the coolant pressure in said gun barrel to be compressed to a pressure above said predefined operating pressure and pushed out of the gun barrel by the gas pressure in the barrel chamber built up when firing a shot, expanding the coolant in a buffer reservoir adjacent the nozzle to said predefined operating pressure, and injecting the coolant back into the gun barrel after the gas pressure built up by firing the shot has been reduced to below said predefined operating pressure.