Patent ID: 9308406
Filing Date: 2016-04-12
CPC Classification: A62C

Claim Text:
1. An automatic fire extinguishing system, comprising: a canister having a central axis; an outlet port disposed on the canister; a dip tube disposed in the canister about the central axis and in partial fluid communication with the canister and coupled to the outlet port, the dip tube including an inlet port on an end opposite the outlet port, the dip tube including at least two holes disposed about the circumference of the dip tube; a semi-permeable membrane is disposed over the inlet port, the semi-permeable membrane configure to move from a closed position to an open position when the propellant gas mixture is discharged in operation; a rod extending axially through the dip tube and through the semi-permeable membrane, the rod being operably coupled to the canister opposite the inlet port, the rod movable from a first position to a second position; a ring member coupled to the rod and disposed within the dip tube, wherein the ring member closes the at least two holes when the rod is in the first position and opens the at least two holes when the rod is in the second position; a propellant gas mixture disposed within the canister; and a gaseous fire suppression agent disposed in the canister, an electric actuator coupled to the canister opposite the outlet port, the electric actuator being at least partially external to the canister; a diaphragm disposed between the electric actuator and the rod; and a pin coupled between the electric actuator and the rod, the pin arranged to extend through the diaphragm and move the rod from the first position to the second position when the electric actuator is activated; wherein a diameter of the outlet port is sized relative to a pressure of the propellant gas mixture to discharge when the rod is in the second position a mixture of the propellant gas mixture and gaseous fire suppression agent from the outlet port within predetermined vehicle confined space parameter threshold.