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US20190145622A1 - Fuel tip with integrated flashback arrestor - Google Patents

Fuel tip with integrated flashback arrestor Download PDF

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Publication number
US20190145622A1
US20190145622A1 US16/244,879 US201916244879A US2019145622A1 US 20190145622 A1 US20190145622 A1 US 20190145622A1 US 201916244879 A US201916244879 A US 201916244879A US 2019145622 A1 US2019145622 A1 US 2019145622A1
Authority
US
United States
Prior art keywords
tip
torch
torch head
passageway
distal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/244,879
Other languages
English (en)
Inventor
Nhyanh D. NGUYEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Equipment Co
Original Assignee
Victor Equipment Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Victor Equipment Co filed Critical Victor Equipment Co
Assigned to VICTOR EQUIPMENT COMPANY reassignment VICTOR EQUIPMENT COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NGUYEN, Nhyanh D.
Publication of US20190145622A1 publication Critical patent/US20190145622A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/38—Torches, e.g. for brazing or heating
    • F23D14/42—Torches, e.g. for brazing or heating for cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/48—Nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/48—Nozzles
    • F23D14/52—Nozzles for torches; for blow-pipes
    • F23D14/54—Nozzles for torches; for blow-pipes for cutting or welding metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/60—Devices for simultaneous control of gas and combustion air

Definitions

  • the present disclosure relates to cutting, welding, and heating devices and, more particularly, to cutting torches with flashback arrestors.
  • a conventional cutting torch first generates a preheat flame with gases discharged from the nozzle, and the preheat flame is used to heat a metal workpiece. After the preheat flame has heated the workpiece sufficiently, a high velocity cutting oxygen stream is activated and delivered through the nozzle. The high velocity cutting oxygen stream physically removes molten material of the workpiece by oxidation, to cut the workpiece.
  • a number of valves and related components are provided upstream of the nozzle, such as in the control body, to control the operations of the cutting torch.
  • Previous approaches for addressing flashback include the use of a sintered material within the torch to be used at the entry point of the gases into the torch. Although this stops the flashback from traveling upstream from the components that supply the gas to the torch, it disadvantageously does not eliminate the effects of flashback within the torch itself. As a result, the torch can still be damaged or the operator can be injured by flashback within the torch.
  • packing material may be installed into the head of a torch or in a tube that is immediately upstream from the head for arresting flashback.
  • this packing material may become damaged, such as by becoming clogged with carbon deposits resulting from flashback.
  • the packing material must be periodically replaced.
  • the removal and replacement of packing material in cutting torches is labor intensive. Additionally, and of significant safety importance, if the packing material is not properly packed it may not perform its intended function, which can result in damage to the torch or injury to its operator.
  • a check valve may be installed in each of the oxygen and fuel passageways to allow the oxygen and the fuel to flow in one direction, while preventing the reverse flow.
  • Check valves are mechanical devices that may become unreliable when contaminated with dirt or debris, which can cause the check valve to leak. Moreover, the check valves cannot prevent flashback flame from propagating upstream once flashback occurs.
  • a flashback arrestor downstream of the head of a cutting torch for restricting flashback into the torch head there is a need in the art for a flashback arrestor downstream of the head of a cutting torch for restricting flashback into the torch head, and which can be readily used and replaced in a manner that is likely to ensure satisfactory functionality of the flashback arrestor.
  • Exemplary approaches herein provide flashback arrestors disposed proximate the head of a cutting torch for restricting flashback into the torch head.
  • a torch assembly including a torch head having a gas passageway formed within a body of the torch head, and a tip coupled to a distal end of the torch head.
  • the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip having a set of openings in fluid communication with the gas passageway for delivering a gas towards the exit orifice.
  • the torch assembly further includes a filter coupled to the tip at the proximal end thereof, the filter disposed between the set of openings and the gas passageway for restricting flashback into the torch head.
  • One approach according to the disclosure includes a torch assembly having a torch head including a gas passageway formed within a body of the torch head, and a tip coupled to a distal end of the torch head.
  • the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip having a set of openings in fluid communication with the gas passageway for delivering a gas towards the exit orifice.
  • the torch assembly further includes a filter coupled to the tip at the proximal end, the filter disposed between the set of openings and the gas passageway.
  • a flashback arrestor for a torch, the flashback arrestor including a torch head including a gas passageway and an oxygen passageway formed within a body of the torch head.
  • the flashback arrestor further includes a tip coupled to a distal end of the torch head, wherein the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip including a set of openings formed through a flange.
  • the set of openings may be in fluid communication with the gas passageway for delivering a gas towards the exit orifice.
  • the flashback arrestor further includes a filter coupled to the flange and disposed between the set of openings and the gas passageway.
  • Yet another approach according to the disclosure includes a device having a torch head including a body, a gas passageway formed through the body, and a tip coupled to a distal end of the torch head.
  • the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip including a set of openings formed through a flange, wherein the set of openings are in fluid communication with the gas passageway for delivering a gas to the exit orifice.
  • the oxy-fuel device further includes a filter coupled to the flange and disposed between the set of openings and the gas passageway.
  • FIG. 1 is an isometric view of a device according to exemplary approaches of the disclosure
  • FIG. 2 is a side cutaway view of the device of FIG. 1 according to exemplary approaches of the disclosure
  • FIG. 3 is an exploded isometric view of the device of FIG. 1 according to exemplary approaches of the disclosure
  • FIG. 4A is an isometric view of tip adaptor of the device of FIG. 1 according to exemplary approaches of the disclosure
  • FIG. 4B is a side cutaway view of the tip adaptor of FIG. 4A according to exemplary approaches of the disclosure
  • FIG. 4C is a top view of the tip adaptor of FIG. 4A according to exemplary approaches of the disclosure
  • FIG. 5A is an exploded isometric view of the tip of the device of FIG. 1 according to exemplary approaches of the disclosure
  • FIG. 5B is an isometric view of an internal component of the tip of FIG. 5A according to exemplary approaches of the disclosure
  • FIG. 5C is a side cutaway view of the tip adaptor of FIG. 5A according to exemplary approaches of the disclosure
  • FIG. 6A is an isometric view of another tip for use with the device of FIG. 1 according to exemplary approaches of the disclosure
  • FIG. 6B is an isometric view of the tip of FIG. 6A according to exemplary approaches of the disclosure
  • FIG. 6C is a side cutaway view of the tip of FIG. 6A according to exemplary approaches of the disclosure.
  • FIG. 7A is an isometric view of another tip for use with the device of FIG. 1 according to exemplary approaches of the disclosure
  • FIG. 7B is an isometric view of the tip of FIG. 7A according to exemplary approaches of the disclosure.
  • FIG. 7C is a side cutaway view of the tip of FIG. 7A according to exemplary approaches of the disclosure.
  • FIG. 8A shows an exploded perspective view of an apparatus that prevents the device from being used without a filter installed to exemplary approaches of the disclosure.
  • FIG. 8B shows a side cutaway view of the apparatus of FIG. 8A according to exemplary approaches of the disclosure.
  • spatially relative terms such as “beneath,” “below,” “lower,” “central,” “above,” “upper,” and the like, may be used herein for ease of describing one element's relationship to another element(s) as illustrated in the figures. It will be understood that the spatially relative terms may encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
  • a torch assembly including a torch head having a gas passageway formed within a body of the torch head, and a tip coupled to a distal end of the torch head.
  • the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip having a set of openings in fluid communication with the gas passageway for delivering a gas towards the exit orifice.
  • the torch assembly further includes a filter coupled to the tip at the proximal end thereof, the filter disposed between the set of openings and the gas passageway for restricting flashback into the torch head.
  • an oxygen-fuel device 10 (hereinafter “device”) includes a torch head 12 having a body 14 for receiving a cutting oxygen and a mixed oxygen-fuel gas via respective inlets 16 and 18 formed in the body 14 .
  • the torch head 12 further includes exterior threads 20 that engage a first tip fastener 24 , such as a nut, for securing a tip 30 to a distal end 32 of the torch head 12 .
  • the torch head 12 further includes an oxygen passageway 34 for receiving the cutting oxygen, and a gas passageway 36 for receiving the mixed oxy-fuel gas.
  • the mixed oxy-fuel gas includes a combination of oxygen and a gaseous fuel, such as acetylene, or the like.
  • a gaseous fuel such as acetylene, or the like.
  • the present disclosure is also applicable to “post-mixed” cutting torches.
  • the cutting oxygen and the mixed oxy-fuel gas illustrated in FIGS. 1-2 are representative of gas supplies and cutting torch components that are upstream from a proximal end 35 of the torch head 12 .
  • the cutting oxygen and the mixed oxy-fuel gas illustrated in FIGS. 1-2 are representative of a control body connected to separate fuel gas and oxygen supplies, and tubes for supplying the oxygen and fuel gas from the control body to the torch head 12 , with the control body including valves and related components for controlling the operations of the device 10 .
  • the device 10 further includes a tip adaptor 40 secured within the torch head 12 , coaxially with the oxygen passageway 34 , so as to couple the tip 30 to the torch head 12 .
  • the tip adaptor 40 has a proximal end 42 secured within a bore of the torch head 12 , and a distal end 44 secured to the tip 30 by a second fastener 46 , such as a nut.
  • the tip adaptor 40 may include a set of threads 48 disposed along an exterior surface 50 thereof for engagement with the second fastener 46 , and a central ring 47 of a flange 49 for engagement with an inner seating surface 51 ( FIG. 1 ) of the first tip fastener 24 .
  • the tip adaptor 40 further includes a plurality of internal fluid passageways extending between the proximal end 42 and the distal end 44 thereof. More specifically, the tip adaptor 40 includes an inner passageway 54 extending from the proximal end 42 to the distal end 44 , the inner passageway 54 aligned with the oxygen passageway 34 for transporting the cutting oxygen to the tip 30 . As shown, the tip adaptor 40 further includes a plurality of outer passageways 56 surrounding the inner passageway 54 , the plurality of outer passageways 56 extending from an upper surface 57 ( FIG. 4 ) of a flange 58 to the distal end 44 . The plurality of outer passageways 56 are configured to transport the mixed oxy-fuel gas to the tip 30 .
  • the device 10 includes an annular gas ring 60 coupled between the tip adaptor 40 and the torch head 12 for transporting the mixed oxy-fuel gas to the tip adaptor 40 .
  • the annular gas ring 60 including a central opening 62 aligned with the oxygen passageway 34 and one or more conduits 63 extending into the gas passageway 36 for receiving the mixed oxy-fuel gas.
  • the oxy-fuel gas passageway 36 is in fluid communication with the plurality of outer passageways 56 of the tip adaptor 40 .
  • the annular gas ring 60 may include a set of threads 66 for engaging the body 14 of the torch head 12 .
  • the tip 30 is coupled to the distal end 32 of the torch head 12 via the tip adaptor 40 .
  • the tip 30 has a proximal end 70 and a distal end 72 , the distal end 72 including an exit orifice 74 .
  • the tip 30 may include a shell 75 surrounding an interior component 76 . As shown, the shell 75 includes an upper rim 77 for engaging a flange 80 of the interior component 76 and an inner seating surface 73 ( FIG. 2 ) of the second tip fastener 46 .
  • the central passageway 78 of the tip 30 is generally aligned with and in fluid communication with the oxygen passageway 34 of the torch head 12 via the inner passageway 54 of the tip adaptor 40 .
  • the flange 80 includes a set of openings 82 formed therein, the set of openings 82 aligned with and in fluid communication with the oxy-fuel gas passageway 36 via the outer passageways 56 of the tip adaptor 40 .
  • the central passageway 78 includes an additional filter 83 ( FIG. 5C ) disposed therein. The filter 83 may advantageously smooth the flow of the cutting oxygen before it reaches the exit orifice 74 .
  • the set of openings 82 are configured to communicate the oxy-fuel gas within the shell 75 , along an exterior surface 84 of the interior component 76 , towards the exit orifice 74 .
  • the tip 30 includes a filter 85 coupled at the proximal end 70 thereof, between the set of openings 82 and the gas passageway 38 of the torch head 12 .
  • the filter 85 may be a sintered bushing disposed within a channel 88 ( FIG. 5B ) of the flange 80 of the tip 30 .
  • the filter 85 is an annularly shaped porous element having a plurality of convolute passageways (not shown) that make gas travel difficult.
  • the porous structure of the filter 85 may be sintered bronze or sintered stainless steel, with a pore size of about ten microns.
  • the pore size is an approximate measure of a representative pore in a direction perpendicular to the flow therethrough. It will be appreciated that the preferred pore size and the number of pores may vary, depending upon many factors associated with the manufacture and operation of the device 10 .
  • the porous structure can be any type of material for allowing the cutting torch to operate in a normal fashion, while also performing a flashback restricting function.
  • the filter 85 When the device 10 is in use, the filter 85 extinguishes a flame and/or prevents a flashback from entering the torch head 12 via the outer passageways 56 of the tip adaptor 40 . Should a flashback occur, it will only travel so far as the filter 85 , which is positioned above the set of openings 82 , thus improving safety for an operator of the device 10 . Furthermore, by placing the filter 85 within the channel 88 of the tip 30 , the filter 85 and the tip 30 may be easily replaced simultaneously.
  • the tip 90 shown in FIGS. 6A-C may be coupled to the distal end 32 of the torch head 12 via the tip adaptor 40 and the second fastener 46 .
  • the tip 90 has a proximal end 91 and a distal end 92 , the distal end 92 including an exit orifice 94 formed therein.
  • a central passageway 95 of the tip 90 is generally aligned with and in fluid communication with the oxygen passageway 34 of the torch head 12 via the inner passageway 54 of the tip adaptor 40 .
  • the central passageway 95 includes an additional filter 96 ( FIG. 6C ) disposed therein.
  • the filter 96 may advantageously smooth the flow of the cutting oxygen before it reaches the exit orifice 94 .
  • the tip 90 further includes a flange 100 at the proximal end 91 , the flange 100 including a channel 102 or recess for receiving the filter 85 therein.
  • the flange 100 includes a set of openings 106 formed therein, wherein the set of openings 106 are aligned with and in fluid communication with the oxy-fuel gas passageway 36 via the outer passageways 56 of the tip adaptor 40 .
  • the set of openings 106 extend from the proximal end 91 to the distal end 92 of the tip 90 , and are configured to communicate the mixed oxy-fuel gas towards the exit orifice 94 .
  • the tip 90 includes filter 85 disposed at the proximal end 91 thereof, between the set of openings 106 and the gas passageway 38 of the torch head 12 .
  • the filter 85 may be a sintered bushing disposed within the channel 102 of the flange 100 .
  • the filter 85 extinguishes a flame and/or prevents a flashback from entering the torch head 12 via the outer passageways 56 of the tip adaptor 40 .
  • the filter 85 and the tip 90 may be easily replaced at the same time.
  • the tip 110 shown in FIGS. 7A-C may be coupled to the distal end 32 of the torch head 12 , for example, via the first tip fastener 24 .
  • the tip 110 is a unitary design taking the place of, for example, the tip adaptor 40 and the tip 30 shown in FIGS. 1-6 .
  • the tip 110 has a proximal end 112 and a distal end 114 , the distal end 114 including an exit orifice 116 .
  • the tip 110 is secured within the torch head 12 , coaxially with the oxygen passageway 34 .
  • the tip 110 may include a flange 120 for engagement with the inner seating surface 51 of the first tip fastener 24 .
  • the tip 110 further includes a plurality of internal fluid passageways extending between the proximal end 112 and the distal end 114 thereof. More specifically, the tip 110 includes a central passageway 122 extending from the proximal end 112 to the distal end 114 , the central passageway 122 configured to transport the cutting oxygen to the exit orifice 116 for engagement with a cutting surface (not shown).
  • the central passageway 122 includes an additional filter 123 ( FIG. 7C ) disposed therein. The filter 123 may advantageously smooth the flow of the cutting oxygen before it reaches the exit orifice 116 .
  • the tip 110 further includes a plurality of outer passageways 126 surrounding the central passageway 122 , the plurality of outer passageways 126 extending from an upper surface 130 of the flange 120 .
  • the plurality of outer passageways 126 are configured to transport the mixed oxy-fuel gas to the exit orifice 116 for engagement with the cutting surface.
  • the tip 110 includes a filter 135 coupled to the upper surface 130 of the flange 120 .
  • the filter 135 is positioned between the plurality of outer passageways 126 and the gas passageway 38 of the torch head 12 .
  • the filter 135 may be a sintered bushing. As described above, when the device 10 is in use, the filter 135 extinguishes a flame and/or prevents a flashback from entering the torch head 12 . Furthermore, by coupling the filter 135 to the tip 110 , the filter 135 and the tip 110 may be easily replaced at the same time.
  • the operation of the device 10 will be described.
  • Oxygen and fuel are supplied to the torch head 12 while the cutting tip 30 is fully mounted thereto.
  • oxygen flows through the oxygen passageway 34
  • fuel flows through each of the upstream fuel or gas passageways 36 , the outer passageways 56 of the tip adaptor 40 , the filter 85 , and then the set of openings 82 of the interior component 76 .
  • the filter 85 is positioned outside of the body 14 of the torch head 12 , between the fuel or gas passageway 36 and the exit orifice 74 of the tip 30 .
  • the device 10 includes an additional filter 71 disposed within the cutting oxygen passageway 34 of the torch head 12 .
  • the additional filter 71 may advantageously smooth the flow of the cutting oxygen before it reaches the tip adaptor 40 .
  • the fuel is then discharged from the tip 30 and ignited to form a preheat flame that is used to heat a metal workpiece.
  • a high velocity cutting oxygen stream is activated and delivered through the device 10 via the oxygen passageway 34 .
  • the high velocity cutting oxygen stream physically removes molten material of the workpiece by oxidation, thus cutting the workpiece. If during this operation flashback occurs as a result of reverse flow and ignition of the explosive mixture of gases, such as due to an obstruction at the nozzle, the filter 85 advantageously restricts the flashback from reaching the upstream fuel passageway 36 .
  • the tip 30 is preferably discarded in its entirety and replaced with a new cutting tip. Completely discarding the used tip 30 and replacing it with a new one prevents malfunctioning that could occur if a user incorrectly installs a new filter 85 or, even worse, removes and does not replace a clogged filter.
  • the tip 30 and the filter 85 can be generally characterized as a “one-piece” consumable item that is completely discarded if/when it becomes clogged.
  • the filter 85 can be readily removable from the tip 30 and is separately replaceable.
  • the device 10 may further include an apparatus that prevents the consumable from being used without a filter being installed.
  • the apparatus 140 may include a spring element 142 , a disc 144 , and a retainer 146 , wherein a force from the spring element 142 causes the disc 144 to engage a filter 150 .
  • the filter 150 retained within the tip 152 is able to apply a force on and push open the disc 144 , thus allowing fluid flow through a passageway 154 .
  • the disc 144 closes against the retainer 146 with the spring force from the spring element 142 , thus allowing little or no fluid flow through the passageway 164 .
  • an overhang portion 160 of the disc 144 is configured to engage a shoulder 162 of the retainer 146 when the filter 150 is not present.
  • the apparatus 140 is configured to engage with and surround a lower extension 166 of the tip adapter 168 .
  • the retainer 146 may engage with an outer surface 170 of the tip adapter 168 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
US16/244,879 2016-07-28 2019-01-10 Fuel tip with integrated flashback arrestor Abandoned US20190145622A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/044476 WO2018022061A1 (en) 2016-07-28 2016-07-28 Fuel tip with integrated flashback arrestor

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US14/683,163 Continuation US20150299468A1 (en) 2014-04-22 2015-04-10 Organic Colorant Complexes from Reactive Dyes and Articles Containing the Same
PCT/US2016/044476 Continuation WO2018022061A1 (en) 2016-07-28 2016-07-28 Fuel tip with integrated flashback arrestor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/153,941 Division US20210148567A1 (en) 2014-04-22 2021-01-21 Organic Colorant Complexes from Reactive Dyes and Articles Containing the Same

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US20190145622A1 true US20190145622A1 (en) 2019-05-16

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US16/244,879 Abandoned US20190145622A1 (en) 2016-07-28 2019-01-10 Fuel tip with integrated flashback arrestor

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US (1) US20190145622A1 (es)
CA (1) CA3030114A1 (es)
MX (1) MX2019000459A (es)
WO (1) WO2018022061A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250367744A1 (en) * 2022-06-27 2025-12-04 Christian Karl Peter ROHLSSEN Oxy-fuel welding and cutting system and method of operating the system

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Publication number Priority date Publication date Assignee Title
PT3630997T (pt) 2017-06-02 2022-04-05 Fastinov S A Monitorização terapêutica de fármacos

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GB120978A (en) * 1917-11-28 1918-11-28 Bruce Conklin Improvements relating to Torches for Welding and Cutting Metals and for other purposes.
US4363443A (en) * 1980-09-26 1982-12-14 Eutectic Corporation Gas-torch construction
US5407348A (en) * 1993-02-10 1995-04-18 Victor Equipment Company Torch with integral flashback arrestors and check valves
US5392825A (en) * 1993-08-03 1995-02-28 Victor Equipment Company Pressure regulator with a flashback arrestor
US5688469A (en) * 1996-09-27 1997-11-18 The Lincoln Electric Company Gas mixer for cutting torches
US8371845B2 (en) * 2002-10-31 2013-02-12 Illinois Tool Works Inc. Torch with integrated flashback arrestor
US7518158B2 (en) * 2003-12-09 2009-04-14 Cree, Inc. Semiconductor light emitting devices and submounts
US8609020B2 (en) * 2010-08-03 2013-12-17 Victor Equipment Company Gas cutting tip with improved flow passage
US20140030666A1 (en) * 2012-07-30 2014-01-30 Victor Equipment Company Flashback arrestor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250367744A1 (en) * 2022-06-27 2025-12-04 Christian Karl Peter ROHLSSEN Oxy-fuel welding and cutting system and method of operating the system

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CA3030114A1 (en) 2018-02-01
MX2019000459A (es) 2019-04-22
WO2018022061A1 (en) 2018-02-01

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