# US 7,744,373 B2 · Dispersion burner for firefighter training > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,373 B2 - Document ID: US7744373B2 - Status: Granted - Kind: B2 - Application number: 11/498,978 - Filed: 2006-08-02 - Published: 2008-02-28 - Granted: 2010-06-29 - Earliest claimed: 2006-08-02 - Assignees: Kidde Fire Trainers, Inc. - Inventors: Steven J. Williamson; Louis Orotelli - Web page: https://patentgrep.com/patent/US7744373B2 ## CPC - A62C 99/0081: {Training methods or equipment for fire-fighting} - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) ## Abstract A firefighting trainer includes a tank for containing a volume of a non-combustible dispersion medium such as water. The water resides within the tank having an upper surface of the water exposed through an open upper end of the tank. A fuel distribution system distributes a combustible fuel into the tank beneath the water surface. An air distribution system distributes an oxygen containing gas (such as air) into the tank beneath the upper water surface. An ignition system ignites a mixture of a vapor of the fuel and the air at the upper surface of the water. A screen covers the open end of the tank and is spaced from the upper surface of the water. The screen has open spaces permitting passage of flame through the screen. ## Claims ### Claim 1 A fire fighting trainer comprising: a tank for containing a volume of a non-combustible medium with the non-combustible medium having an upper surface within the tank; the tank having an open upper end exposing the upper surface; a fuel distribution system for distributing a combustible fuel into the tank beneath the upper surface, the fuel distribution system including a plurality of fuel outlets within the tank; an oxygen-containing gas distribution system for distributing an oxygen-containing gas into the tank, the oxygen-containing gas distribution system including a plurality of gas outlets within the tank, the gas outlets being positioned to deliver the oxygen-containing gas at a surface of the non-combustible medium in a core area of the tank surrounded by the fuel outlets of the fuel distribution system; an ignition system for igniting a mixture of a vapor of the fuel and the oxygen-containing gas at the upper surface for said mixture to ignite into flame. ### Claim 2 (depends on 1) A fire fighting trainer according to claim 1 further comprising a mesh material covering the open upper end of the tank at a level spaced upwardly from the upper surface, the mesh material having open spaces permitting passage of the flame through the mesh material. ### Claim 3 (depends on 1) A fire fighting trainer according to claim 1 wherein the non-combustible medium is water. ### Claim 4 (depends on 3) A fire fighting trainer according to claim 3 further comprising an overflow control for limiting a maximum level of the water with the tank. ### Claim 5 (depends on 1) A fire fighting trainer according to claim 1 wherein the fuel distribution system includes a piping system within the tank for distributing combustible fuel into the medium and ejecting the fuel from the piping into the medium with the fuel forming a vapor distributed at the upper surface. ### Claim 6 (depends on 1) A fire fighting system according to claim 1 wherein the oxygen-containing gas distribution system includes a plurality of tubes disposed within the tank and extending from a bottom of the tank upward toward the upper surface and connected to a source of air for admitting air into the tubes for distribution of air at the upper surface to mix with fuel at the upper surface in a core of the flame. ### Claim 7 (depends on 6) A fire fighting system according to claim 6 wherein the tubes terminate at upper ends defining a plane at the upper surface for water within the tank to spill into the tubes as the water exceeds the upper surface. ### Claim 8 A fire fighting trainer comprising: a tank for containing a volume of a non-combustible medium with the non-combustible medium having an upper surface within the tank; the tank having an open upper end exposing the upper surface; a fuel distribution system for distributing a combustible fuel into the tank beneath the upper surface; an oxygen-containing gas distribution system for distributing an oxygen-containing gas into the tank at a core area surrounded by the fuel distribution system within the tank, so that oxygen-containing gas is supplied at the upper surface of the non-combustible medium for combustion with the fuel; an ignition system for igniting a mixture of a vapor of the fuel and the oxygen-containing gas at the upper surface for said mixture to ignite into a flame; a mesh material covering the open upper end of the tank at a level spaced upwardly from the upper surface, the mesh material having open spaces permitting passage of the flame through the mesh material. ### Claim 9 (depends on 8) A fire fighting trainer according to claim 8 wherein the non-combustible medium is water. ### Claim 10 (depends on 9) A fire fighting trainer according to claim 9 further comprising an overflow control for limiting a maximum level of the water with the tank. ### Claim 11 (depends on 8) A fire fighting trainer according to claim 8 wherein the fuel distribution system includes a piping system within the tank for distributing combustible fuel into the medium and ejecting the fuel from the piping into the medium with the fuel forming a vapor distributed at the upper surface. ### Claim 12 (depends on 8) A fire fighting system according to claim 8 wherein the oxygen-containing gas distribution system includes a plurality of tubes disposed within the tank and extending from a bottom of the tank upward toward the upper surface and connected to a source of air for admitting air into the tubes for distribution of air at the upper surface to mix with fuel at the upper surface in a core of the flame. ### Claim 13 (depends on 12) A fire fighting system according to claim 12 wherein the tubes terminate at upper ends defining a plane at the upper surface for water within the tank to spill into the tubes as the water exceeds the upper surface. ### Claim 14 A fire fighting trainer comprising: a tank for containing a volume of water with the water having an upper surface within the tank; the tank having an open upper end exposing the upper surface; a fuel distribution system for distributing a combustible fuel into the tank beneath the upper surface, wherein the fuel distribution system includes a piping system including a plurality of outlets within the tank for distributing combustible fuel into the water and ejecting the fuel from the piping into the water with the fuel forming a vapor distributed at the upper surface; an oxygen-containing gas distribution system for distributing an oxygen-containing gas into the tank, wherein the oxygen-containing gas distribution system includes a plurality of vertical tubes disposed within the tank in a core area surrounded by the piping system and extending from a bottom of the tank upward toward the upper surface and connected to a source of air for admitting air into the tubes for distribution of air at the upper surface to mix with fuel at the upper surface, wherein the tubes terminate at upper ends defining a plane at the upper surface for water within the tank to spill into the tubes as the water exceeds the upper surface to form an overflow control system, the overflow control system including a collection trough; an ignition system for igniting a mixture of a vapor of the fuel and the oxygen-containing gas at the upper surface for said mixture to ignite into a flame; a mesh material covering the open upper end of the tank at a level spaced upwardly from the upper surface, the mesh material having open spaces permitting passage of the flame through the mesh material.