Patent ID: 6311602
Filing Date: 2001-11-06
Classification: F41A

Abstract:
A method for cooling a gun barrel comprising the steps of:conveying a coolant from a coolant reservoir into a pressure cylinder by drawing up a hydraulic piston connected to said cylinder while a coolant feed line from said cylinder to the gun barrel is closed,thereafter moving the hydraulic piston in the opposite direction by a pressure reversal, wherein the coolant in the pressure cylinder is placed under a predefined operating pressure which is higher than the ambient pressure,opening said coolant feed line prior to firing an ammunition round in said gun barrel so that the coolant flows to the gun barrel via the feed line and a nozzle,firing an ammunition round which thereby pushes said coolant back toward said pressure cylinder as a result of gases released by said fired ammunition round exerting a pressure above said predefined operating pressure, andinjecting coolant back into the gun barrel again after the gas pressure has been reduced to below said predefined operating pressure.