Patent ID: 6131667
Filing Date: 2000-10-17
Classification: A62C

Abstract:
A fire extinguisher which maintains a constantly high pressure inside a shell of the fire extinguisher throughout a shelf-life of the fire extinguisher comprising an ejection chamber having internal threads at its lower edge and a shell having external threads at its upper edge to mate tightly with said internal threads of said ejection chamber where said shell contains fire extinguishing agent in an absolutely closed system by means of fillet welding the threaded connection between said ejection chamber and said shell, to thoroughly prevent any possible leakage of fire extinguishing agent from said fire extinguisher, and whereof there is a pressing element which presses on top of a plate fillet welded to an inner lower wall of said ejection chamber; whereupon lifting up or destroying said pressing element, pressure inside said shell forces to cause a hole being formed in said plate allowing said fire extinguishing agent to flow out to put out a fire.