Automatic mechanism for the discharge of fluid in a pressurized system

Claim 1

An automatic device capable of initiating the discharge of a liquid or gas, contained in a pressurized system, in function of activation produced by a sensor controlling a variable, characterized by the fact of comprising a rigid body in which are formed a closed cylindrical chamber, a coaxial bore parting from the bottom of said chamber and debouching at the outside of said body, a first communication conduit communicating the bottom of said chamber with the outside, a second communication conduit communicating a region adjacent to the chamber cover with a second bore the axis of which is directed transversally with regard to the chamber axis, said second bore communicating the pressurized system with the coaxial bore and communicating with the chamber bottom through a restricted diameter connection and a regulatable valve, said chamber housing a slidable piston having a stem which projects into the coaxial bore and terminates in a membrane puncturing means facing a membrane closing the outside bore outlet, a seal element being provided between the stem and the wall of the coaxial bore, situated between the entry of the second bore to the coaxial bore and the bottom of the chamber, said first conduit communicating the chamber with the outside being provided with a closure means facing a perforating device connected to the control sensor.