Patent ID: 6202667
Filing Date: 2001-03-20
Classification: A62C,F16K,F16L,Y10T

Abstract:
An apparatus for stopping the propagation of an ignited flammable gas in a conduit comprising:an elongated conduit body having an inlet end and an outlet end,a mounting means fixedly attached to an inside wall of said elongated conduit body between said inlet end and said outlet end, anda bullet means comprising a head portion and a body portion, said body portion being detachably mounted to said mounting means such that the body portion is suspended in a cavity of said elongated conduit body with said head portion pointed toward said inlet end, said body portion being equipped with an explosive pack having an ignition means exposed to and facing said outlet end of the conduit body, said body portion further having an outside diameter larger than an inside diameter of the inlet end of the conduit body such that when said explosive pack is ignited by a flame entering said cavity of the conduit body from said outlet end, the bullet means severs from said mounting means and propels toward said inlet end such that the outside perimeter of said body portion of the bullet means frictionally engages said inside diameter of inlet end of said conduit body substantially blocking a passage in said inlet end and stopping propagation of said flame.