US Patent 11865386 Automatic fire self-extinguishing device and fire protection method

An automatic self-extinguishing fire device including an extinguishing substance, and a hose closed on both ends by pressed endings. The extinguishing substance is inside the hose. At least one of the endings of the hose has a closing screw. A pressure valve for filling by the extinguishing substance inside the hose is located on one of the endings of the hose. The extinguishing substance in the hose is under pressure and the hose is at least partially transparent in order to observe an inner content of the hose.