# US 9,039,406 B2 · Combustible fluid cutting safety system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,406 B2 - Document ID: US9039406B2 - Status: Granted - Kind: B2 - Application number: 14/225,645 - Filed: 2014-03-26 - Published: 2014-07-24 - Granted: 2015-05-26 - Earliest claimed: 2013-01-13 - Applicants: David J. Logan; Jonathan A. Logan; Allan M. Horne; Paul E. Christensen - Inventors: David J. Logan; Jonathan A. Logan; Allan M. Horne; Paul E. Christensen - Web page: https://patentgrep.com/patent/US9039406B2 ## CPC - B23K 37/006: Safety devices for welding or cutting - B23K 7/10: Auxiliary devices, e.g. for guiding or supporting the torch - B23K 7/00: Cutting, scarfing, or desurfacing by applying flames - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM ## Abstract Embodiments of the present invention provide components and a system for providing a safer environment for using a cutting torch. The system includes a cutting torch and a control box. There is communication from the user to the control box to allow fluids to flow to the torch. The control box includes closed biased valve(s) such that if there is a condition where there is no instruction from the torch to the control box and/or power is lost, the valves will shut, preventing fluid from flowing into the torch. ## Claims ### Claim 1 An apparatus comprising: a cutting torch comprising: a safety actuator comprising a trigger; two torch inlets, comprising a first torch inlet and a second torch inlet; a secondary oxygen valve; a torch outlet; and a conduit; wherein the two torch inlets are configured to allow liquids, gasses, or a combination thereof into the cutting torch; the torch outlet is configured to allow the liquid, gas, or the combination of the two exit the torch outlet; the secondary oxygen valve is located in a path from the first torch inlet and the torch outlet, and the secondary oxygen valve is configured to increase the flow, along the path to the torch outlet, when actuated; and the safety actuator is in communication with the conduit, and the safety actuator is configured to express a state of the trigger along the conduit. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the safety actuator further comprises a pneumatic switch and the conduit comprises tubing. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the safety actuator further comprises an electrical switch and the conduit comprises a wireless transmitter. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the safety actuator further comprises an electrical switch and the conduit comprises electrical wire. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the cutting torch further comprises a connector connected to the conduit. ### Claim 6 (depends on 4) The apparatus of claim 4, wherein the conduit is integral with or adjacent to at least one of the two torch inlets. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the safety actuator comprises a remote safety actuator that is attached to a cable that extends from the cutting torch. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the cutting torch further comprises a battery. ### Claim 9 An apparatus comprising: a control box comprising: a housing; a fuel valve, wherein the fuel valve is closed biased; an oxygen valve, wherein the oxygen valve is closed biased; a fuel inlet; an oxygen inlet; a fuel outlet; and an oxygen outlet; wherein the fuel valve is located in the housing and is configured to control flow between the fuel inlet and the fuel outlet; the oxygen valve is located in the housing and is configured to control flow between the oxygen inlet and the oxygen outlet; and only material that has flowed through the oxygen valve can flow out the oxygen outlet. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the control box further comprises a fuel gauge configured to display pressure existing at the fuel outlet. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the control box further comprises kill switch that is configured to cause closure of the fuel valve when the kill switch is actuated to a kill position. ### Claim 12 (depends on 9) The apparatus of claim 9, wherein the control box further comprises kill switch that is configured to cause closure of the fuel valve and the oxygen valve when the kill switch is actuated to a kill position. ### Claim 13 (depends on 9) The apparatus of claim 9, wherein the control box further comprises a remote safety actuator that is attached to cable that extends from the housing. ### Claim 14 An apparatus comprising: a cutting torch comprising: a safety actuator comprising a trigger; two torch inlets, comprising a first torch inlet and a second torch inlet; a secondary oxygen valve; a torch outlet; and a conduit; and a control box comprising: a housing; a fuel valve, wherein the fuel valve is closed biased; a fuel inlet; and a fuel outlet; wherein the cutting torch is in communication with the control box via the conduit; one of the two torch inlets is connected to the fuel outlet via a line; the two torch inlets are configured to allow liquids, gasses, or a combination thereof into the cutting torch; the torch outlet is configured to allow the liquid, gas, or the combination of the two exit the torch outlet; the secondary oxygen valve is located in a path from the first torch inlet and the torch outlet, and the secondary oxygen valve is configured to increase the flow, along the path to the torch outlet, when actuated; the safety actuator is in communication with the conduit, and the safety actuator is configured to express a state of the trigger along the conduit to the fuel valve, and the fuel valve will open when the trigger is actuated; and the fuel valve is located in the housing and is configured to regulate flow between the fuel inlet and the fuel outlet. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the conduit comprises electrical wire, tube, or wireless communication. ### Claim 16 (depends on 14) The apparatus of claim 14, wherein the conduit comprises electrical wiring that is integral with the line. ### Claim 17 (depends on 14) The apparatus of claim 14, wherein the control box further comprises an oxygen inlet; an oxygen outlet; and an oxygen valve, wherein the oxygen valve is closed biased. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the control box further comprises kill switch that is configured to cause closure of the fuel valve and the oxygen valve when the kill switch is actuated to a kill position. ### Claim 19 (depends on 14) The apparatus of claim 14, wherein the safety actuator comprises a remote safety actuator that is attached to a cable that extends from the cutting torch. ### Claim 20 (depends on 1) The apparatus of claim 1, further comprising a torch oxygen valve and a torch fuel valve; wherein the torch oxygen valve is configured to adjust flow from the first torch inlet, and the torch fuel valve is configured to adjust flow from the second torch inlet.