EP0973362A1 - Dispositif de sécurité pour torche à plasma - Google Patents
Dispositif de sécurité pour torche à plasma Download PDFInfo
- Publication number
- EP0973362A1 EP0973362A1 EP99401701A EP99401701A EP0973362A1 EP 0973362 A1 EP0973362 A1 EP 0973362A1 EP 99401701 A EP99401701 A EP 99401701A EP 99401701 A EP99401701 A EP 99401701A EP 0973362 A1 EP0973362 A1 EP 0973362A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- torch
- cap
- protective cap
- head
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3473—Safety means
Definitions
- the present invention relates to a device for safety for electric arc work torch, especially for plasma cutting torch.
- the electrode of a cutting torch plasma is carried, during use, at high voltages, commonly above 100 V, and sometimes up to 300 V.
- the electrode is normally made inaccessible to the operator by the presence of the nozzle of the torch coming position around the electrode in a manner known in oneself.
- the electrode is then cleared, that is to say accessible to the operator.
- the document EP-A-110736 proposes a system of security based on presence control only an insulating protective skirt arranged around the torch nozzle.
- this system does not support counts the presence of the nozzle and a distracted operator could reassemble this protective skirt by omitting replace the nozzle, which would allow access to the electrode by the operator and therefore would be susceptible to expose it to a significant risk of electric shock by contact with live parts, in particular the electrode.
- document DE-A-3714995 describes a torch plasma equipped with a nozzle around which is arranged a protective cap and comprising a system safety device including an electric switch be actuated by a movable shaped push rod which is located in a dwelling located inside the torch body.
- the push rod cooperates with the nozzle through a movable annular part.
- the cap of protection is mounted on the torch body.
- the aim of the present invention is therefore to solve the aforementioned problem by proposing a security system for electric arc work torches, especially for manual plasma cutting torch, allowing check for simultaneous presence, i.e. mounting correct, not only from the nozzle surrounding the electrode of the torch, but also of the protective skirt insulator surrounding said nozzle.
- the present invention aims to improve known plasma torches.
- the security system according to the invention must be easy to manufacture and inexpensive industrially acceptable.
- the torch according to the invention can be used in any manual welding process or manual arc cutting plasma.
- Figures 1 to 4 show diagrams, in section longitudinal and in side and partial view of a manual plasma cutting torch 1 according to a first mode of production in accordance with the present invention, comprising a torch head 1 'carrying a nozzle holder 10 and a nozzle 4, said nozzle 4 being fixed to the door nozzle 10 by means of fixing means 14, such as, for example, threading, tapping or the like.
- the plasma torch 1 has a handle 2, partially shown here, within which are arranged electrical switch means 3 comprising a control member 9 for controlling supply and / or interruption of supply to said torch head 1 'in electric current.
- a removable protective cap 5 preferably an insulating material, such as a polymer, is placed axially around at least part of the head torch 1 ', that is to say that this protective cap 5 surrounds part of the nozzle holder 10 and the nozzle 4 like a sleeve.
- the cap 5 of protection consists of three parts 8, 13 and 23 likely to cooperate with all or part of elements making up the torch head 1 ′, preferably with the nozzle 4, to allow fixing and holding said protective cap 5 on said head torch 1 '.
- the three parts 8, 13 and 23, playing the role of holding means include a rod 8, a fixed part 23 and a movable part 13 whose function is to compress the rod 8 by sliding along the substantially conical internal surface of the movable part 13 and / or the fixed part 23.
- the rod 8 comes to cooperate with a recess 7 peripheral, like a circular groove, arranged in periphery of the upper part 12 of the nozzle 4, said rod 8 penetrating at least partially into said peripheral groove 7 when the cap 5 on the nozzle 4.
- the nozzle 4 is positioned and fixed to the nozzle holder 10 by means of attachment 14, such as thread and internal thread, or all analogous means.
- Correct positioning of the nozzle 4 in the nozzle holder 10 is obtained, for example, when the upper bearing surface 12 of the nozzle 4 comes in stop against the lower bearing surface 11 of the door nozzle 5, as shown in FIG. 1, where one sees that the nozzle 4 and the nozzle holder 5 are coaxial along the axis (x-x ').
- the rod 8 located inside the protective cap 5 is located after correct positioning of the protective cap 5 on the torch head 1 ', opposite the groove 7 arranged in periphery of the nozzle and then it suffices, by a means suitable, such as a cone or the like, for tightening the rod 8 to force it to partially penetrate the groove 7 of the nozzle 4, so as to secure, in working position, the two parts, namely the nozzle 4 and the protective cap 5.
- the extension or medium actuation of the cap 5 comes to cooperate with the control member 9 for the switching means electric to authorize the operation of the source power, i.e. the current generator or analogous, thereby contributing to the feeding of the head torch 1 'in electric current.
- the means actuation or extension 6 of the cap 5 can enter the internal space of the handle 2 of the torch 1 and thus activate the electric switch 3, in this configuration, the protective cap 5 does not cannot hold in place and is automatically ejected as soon as the operator releases it, since the nozzle 4 being absent, the protective cover 5 cannot be held on the end of the torch head 1 '.
- the device according to the present invention has an important advantage from the point of view security, insofar as the functioning of the power generator delivering electric current can only be authorized when the nozzle 4 and the protective cap 5, at a time, are properly placed on the head 1 'of the torch.
- Figures 5 to 8 show diagrams of a second embodiment of a torch 1 manual plasma cutting in accordance with this invention; this second embodiment being prefer.
- the torch head 1 ′ comprises a holder nozzle 10 and a nozzle 4 fixed to the nozzle holder 10 by by means of fixing means 14, for example a threading, tapping or the like.
- the electrical switch means 3 provided with a control member 9 for controlling supply and / or interruption of supply to the torch head 1 'in electric current are arranged in the handle 2 of the plasma torch 1.
- the cap is formed of a single piece and not of several mobile sub-parts serving as means holding as in the first embodiment.
- the cap for example made of polymer material hung on a metal ring, consists of a unique structure carrying the rod 8 permanently inserted in a recess or a groove arranged on its wall internal device.
- the rod 8 penetrates at least partially in the peripheral groove 7 of the nozzle 4, during fitting by clipping of the cover 5 on said nozzle 4, said rod 8 coming to be inserted in the circular groove 7.
- the internal diameter of the rod 8 is substantially equal or slightly lower the external diameter of the nozzle 4 measured in or at the bottom circular groove 7.
- the internal diameter of the rod 8 can be about 17mm and the outside diameter of the nozzle 4 measured at the bottom of the circular groove 7 can be a few tenths of a millimeter lower.
- the protective cap 5 carries a ring 15 metallic integral with part of its internal wall, said ring 15 being associated with said ring 8, so as to allow better thermal and mechanical resistance of this part of the skirt.
- the actuation means 6 formed of an axial extension of the cap 5 comes to cooperate with the control member 9 for the switching means electric to allow the supply of the head 1 ' in electric current. If nozzle 4 is omitted, the risks of electric shock for the operator are greatly diminished because, as explained above, the protective cap 5 cannot hold in place and is automatically ejected as soon as the operator releases it and the torch head 1 'cannot be supplied with electric current continuously.
- the head 1 ' torch cannot be supplied with current electric because the actuating means 6, that is to say the axial extension of the cap 5, cannot come cooperate with the means control member 9 electrical switches to allow power from the head 1 'while running.
- said cap protection 5 has a first support face comprising at least a first ramp, preferably two ramps 16 and 16 '.
- the first ramps 16, 16 'of the protective cap 5 are worn by the axial extension 6 of the peripheral wall of the cap 5 and constitute the bearing faces of this axial extension 6.
- the end of the torch head 1 ' has a second bearing face comprising at least a second ramp, preferably two ramps 14 and 14 '.
- the ramps 16 and 16 ' have a shape, i.e. slopes, approximately equal or substantially complementary to that of ramps 14 and 14 ', respectively.
- the ramp 14 may have a slope equal to or different from that of ramp 14 'and, from similarly, the ramp 16 can be of equal slope or different from that of the 16 'ramp.
- the present invention improves significantly the safety of using a torch plasma, in particular manual, which is equipped with it.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
- Arc Welding In General (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Discharge Heating (AREA)
Abstract
Description
- une tête de torche comportant au moins un porte-tuyère et une tuyère, ladite tuyère venant se fixer audit porte-tuyère par l'intermédiaire de moyens de fixation;
- des moyens interrupteurs électriques de sécurité commandant l'alimentation de ladite tête de torche en courant électrique; et
- une coiffe de protection amovible entourant au
moins une partie de la tête de torche, ladite coiffe de
protection comprenant :
- au moins un moyen d'actionnement susceptible de venir coopérer avec les moyens interrupteurs électriques de sécurité pour permettre d'alimenter la tête de torche en courant électrique, et
- des moyens de maintien susceptibles de coopérer avec au moins la tuyère pour permettre la solidarisation de ladite coiffe de protection avec au moins ladite tuyère.
- le moyen d'actionnement est un prolongement axial, selon l'axe (x-x'), de la paroi périphérique de la coiffe de protection.
- les moyens de maintien comportent au moins un jonc agencé à l'intérieur de la coiffe de protection.
- le jonc est logé dans un évidemment, par exemple une gorge annulaire, pratiqué dans la paroi périphérique interne de la coiffe.
- le jonc agencé à l'intérieur de la coiffe de protection est susceptible de coopérer avec au moins un évidement aménagé périphériquement à la tuyère, de manière à permettre une solidarisation de ladite coiffe de protection avec au moins ladite tuyère.
- au moins un évidement est sensiblement circulaire et aménagé sur la paroi périphérique externe de la tuyère, de préférence l'évidement est une gorge annulaire.
- la solidarisation de ladite coiffe de protection avec au moins ladite tuyère est réalisée par clipsage dudit jonc dans ledit évidemment aménagé périphériquement à la tuyère ; le clipsage étant l'action de monter, à force, un organe élastique (ici le jonc) sur un support muni d'une force de maintien (ici la tuyère et sa gorge).
- les moyens interrupteurs électriques sont agencés dans la poignée de manipulation de la torche.
- ladite coiffe de protection est réalisée en un matériau électriquement isolant, tel un matériau polymère, associé à une bague, de préférence métallique, solidaire d'au moins une partie de sa paroi interne, portant le logement du jonc.
- la coiffe de protection est réalisée en une pièce ou structure unique en matériau électriquement isolant, de préférence en au moins un polymère moulé ou thermodurcissable.
- le moyen d'actionnement de ladite coiffe vienne coopérer avec les moyens-interrupteurs électriques de sécurité pour permettre d'alimenter la tête de torche en courant électrique, et
- des moyens de maintien portés par ladite coiffe viennent coopérer avec la tuyère pour assurer la fixation et le maintien de ladite coiffe sur au moins ladite tuyère.
Claims (12)
- Torche à plasma (1) comprenant :une tête de torche (1') comportant au moins un porte-tuyère (10) et une tuyère (4), la tuyère (4) venant se fixer audit porte-tuyère (10) par l'intermédiaire de moyens de fixation (14);des moyens interrupteurs électriques (3) de sécurité commandant l'alimentation de la tête de torche (1') en courant électrique; etune coiffe de protection (5) amovible entourant au moins une partie de la tête de torche (1'), ladite coiffe (5) de protection comprenant :au moins un moyen d'actionnement (6) susceptible de venir coopérer avec les moyens interrupteurs électriques (3) de sécurité pour permettre d'alimenter la tête de torche (1') en courant électrique, etdes moyens de maintien susceptibles de coopérer avec au moins la tuyère (4) pour permettre la solidarisation de ladite coiffe de protection (5) avec au moins ladite tuyère (4).
- Torche selon la revendication 1, caractérisée en ce que le moyen d'actionnement (6) est un prolongement axial de la paroi périphérique de la coiffe de protection (5).
- Torche selon l'une des revendications 1 ou 2, caractérisée en ce que les moyens de maintien comportent au moins un jonc (8) agencé à l'intérieur de la coiffe de protection (5), de préférence ledit jonc (8) est logé dans un évidemment pratiqué dans la paroi périphérique interne de la coiffe (5).
- Torche selon l'une des revendications 1 à 3, caractérisée en ce qu'au moins le jonc (8) agencé à l'intérieur de la coiffe (5) est susceptible de coopérer avec au moins un évidement (7) aménagé périphériquement à la tuyère (4), de manière à permettre une solidarisation de ladite coiffe de protection (5) avec au moins ladite tuyère (4).
- Torche selon l'une des revendications 1 à 4, caractérisée en ce qu'au moins un évidement (7) est sensiblement circulaire et aménagé sur la paroi périphérique externe de la tuyère (4), de préférence l'évidement (7) est une gorge annulaire.
- Torche selon l'une des revendications 1 à 5, caractérisée en ce que la solidarisation de ladite coiffe de protection (5) avec au moins ladite tuyère (4) est réalisée par clipsage dudit jonc (8) dans ledit évidemment (7).
- Torche selon l'une des revendications 1 à 6, caractérisée en ce que les moyens interrupteurs électriques (3) sont agencés dans la poignée de manipulation (2) de la torche (1).
- Torche selon l'une des revendications 1 à 7, caractérisée en ce que ladite coiffe de protection (5) est réalisée en au moins un matériau électriquement isolant, tel un matériau polymère, de préférence la coiffe de protection est réalisée en une pièce unique électriquement isolante.
- Torche selon l'une des revendications 1 à 8, caractérisée en ce que ladite coiffe de protection (5) porte, en outre, une bague (15) métallique solidaire d'au moins une partie de sa paroi interne, de préférence ladite bague (15) métallique est associée audit jonc (8).
- Torche selon l'une des revendications 1 à 9, caractérisée en ce que la coiffe de protection (5) comporte une première face d'appui comprenant au moins une première rampe (16, 16') et l'extrémité de la tête de torche (1') comporte une deuxième face d'appui comprenant au moins une deuxième rampe (14, 14'), au moins une partie desdites première et deuxième faces d'appui, et au moins lesdites première (16, 16') et deuxième (14, 14') rampes venant, respectivement, au contact l'une de l'autre lorsque la coiffe de protection (5) est montée solidairement sur la tête de torche (1'), de préférence au moins une première rampe (16, 16') de la coiffe de protection (5) est portée par le prolongement axial (6) de la paroi périphérique de la coiffe (5).
- Procédé d'assemblage d'une torche à plasma manuelle (1) comprenant une tête de torche (1') selon l'une des revendications 1 à 10, comportant au moins un porte-tuyère (10) et une tuyère (4) , des moyens interrupteurs électriques (3) de sécurité et une coiffe de protection (5) amovible comportant un moyen d'actionnement (6), dans lequel on procède selon les étapes successives suivantes :a/ on positionne et on fixe la tuyère (4) dans le porte-tuyère (10) par l'intermédiaire de moyens de fixation (14),b/ on positionne et on fixe ladite coiffe de protection (5) sur ladite tête de torche (1'), de manière à ce que :le moyen d'actionnement (6) porté par ladite coiffe vienne coopérer avec les moyens interrupteurs électriques (3) de sécurité pour permettre d'alimenter la tête de torche (1') en courant électrique, etles moyens de maintien de la coiffe (5) viennent coopérer avec la tuyère (4) pour assurer la fixation et le maintien de ladite coiffe (5) sur au moins ladite tuyère (4).
- Procédé de soudage ou de coupage à l'arc plasma, dans lequel on utilise une torche à plasma (1) selon l'une des revendications 1 à 10.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9809038A FR2781328B1 (fr) | 1998-07-15 | 1998-07-15 | Dispositif de securite pour torche a plasma |
FR9809038 | 1998-07-15 | ||
CA002281394A CA2281394A1 (fr) | 1998-07-15 | 1999-09-02 | Dispositif de securite pour torche a plasma |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0973362A1 true EP0973362A1 (fr) | 2000-01-19 |
EP0973362B1 EP0973362B1 (fr) | 2004-09-22 |
Family
ID=25681183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99401701A Expired - Lifetime EP0973362B1 (fr) | 1998-07-15 | 1999-07-07 | Dispositif de sécurité pour torche à plasma |
Country Status (7)
Country | Link |
---|---|
US (1) | US6096993A (fr) |
EP (1) | EP0973362B1 (fr) |
AT (1) | ATE277496T1 (fr) |
CA (1) | CA2281394A1 (fr) |
DE (1) | DE69920343T2 (fr) |
ES (1) | ES2229644T3 (fr) |
FR (1) | FR2781328B1 (fr) |
Cited By (1)
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---|---|---|---|---|
CN110169207A (zh) * | 2017-01-13 | 2019-08-23 | 海别得公司 | 禁用等离子弧焊枪及相关系统和方法 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6914211B2 (en) * | 2003-02-27 | 2005-07-05 | Thermal Dynamics Corporation | Vented shield system for a plasma arc torch |
US6881921B2 (en) * | 2003-05-22 | 2005-04-19 | Thermal Dynamics Corporation | Torch with rotational start |
AT502423B1 (de) * | 2005-09-09 | 2007-06-15 | Fronius Int Gmbh | Vorrichtung zum wechsel einer düse eines wasserdampfplasmabrenners |
US20070138150A1 (en) * | 2005-12-20 | 2007-06-21 | Honeywell International, Inc. | Hand-held laser welding wand position determination system and method |
US9560732B2 (en) | 2006-09-13 | 2017-01-31 | Hypertherm, Inc. | High access consumables for a plasma arc cutting system |
US9662747B2 (en) | 2006-09-13 | 2017-05-30 | Hypertherm, Inc. | Composite consumables for a plasma arc torch |
US10098217B2 (en) | 2012-07-19 | 2018-10-09 | Hypertherm, Inc. | Composite consumables for a plasma arc torch |
US10194516B2 (en) | 2006-09-13 | 2019-01-29 | Hypertherm, Inc. | High access consumables for a plasma arc cutting system |
US7989727B2 (en) * | 2006-09-13 | 2011-08-02 | Hypertherm, Inc. | High visibility plasma arc torch |
DE102009048397A1 (de) * | 2009-10-06 | 2011-04-07 | Plasmatreat Gmbh | Atmosphärendruckplasmaverfahren zur Herstellung oberflächenmodifizierter Partikel und von Beschichtungen |
CN205021001U (zh) * | 2013-04-09 | 2016-02-10 | 松下知识产权经营株式会社 | 等离子切割用割炬 |
US9609733B2 (en) | 2013-11-12 | 2017-03-28 | The Esab Group, Inc. | Plasma arc torch and method for assembling and disassembling a plasma arc torch |
US11684995B2 (en) | 2013-11-13 | 2023-06-27 | Hypertherm, Inc. | Cost effective cartridge for a plasma arc torch |
US11432393B2 (en) | 2013-11-13 | 2022-08-30 | Hypertherm, Inc. | Cost effective cartridge for a plasma arc torch |
US10456855B2 (en) | 2013-11-13 | 2019-10-29 | Hypertherm, Inc. | Consumable cartridge for a plasma arc cutting system |
US9981335B2 (en) | 2013-11-13 | 2018-05-29 | Hypertherm, Inc. | Consumable cartridge for a plasma arc cutting system |
US11278983B2 (en) | 2013-11-13 | 2022-03-22 | Hypertherm, Inc. | Consumable cartridge for a plasma arc cutting system |
EP3180151B1 (fr) * | 2014-08-12 | 2021-11-03 | Hypertherm, Inc. | Cartouche rentable pour chalumeau à arc de plasma |
JP7073251B2 (ja) | 2015-08-04 | 2022-05-23 | ハイパーサーム インコーポレイテッド | 液冷プラズマアークトーチ用カートリッジフレーム |
US10413991B2 (en) | 2015-12-29 | 2019-09-17 | Hypertherm, Inc. | Supplying pressurized gas to plasma arc torch consumables and related systems and methods |
US9831070B1 (en) | 2017-06-15 | 2017-11-28 | Enercon Industries Corporation | Surface treater with expansion electrode arrangement |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2534107A1 (fr) * | 1982-10-01 | 1984-04-06 | Soudure Autogene Francaise | Torche de travail a l'arc munie d'une coiffe amovible |
GB2192821A (en) * | 1986-06-27 | 1988-01-27 | Wtc Holdings Limited | Air plasma arc torch |
DE3714995A1 (de) * | 1987-05-06 | 1988-11-17 | Wilhelm Dinse | Vorrichtung zum plasmaschneiden und -schweissen von metallischen werkstuecken |
JPS6457982A (en) * | 1987-08-28 | 1989-03-06 | Hitachi Seiko Kk | Plasma torch |
DE4313830A1 (de) * | 1993-04-28 | 1994-11-03 | Binzel Alexander Gmbh Co Kg | Lichtbogenschweiß- oder -schneidbrenner |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1191365B (it) * | 1986-06-26 | 1988-03-16 | Cebora Spa | Circuito di comando per una apparecchiatura di talgio o saldatura al plasma ad arco trasferito |
US4973816A (en) * | 1989-03-28 | 1990-11-27 | Delaware Capital Formation, Inc. | Plasma torch with safety switch |
-
1998
- 1998-07-15 FR FR9809038A patent/FR2781328B1/fr not_active Expired - Fee Related
-
1999
- 1999-07-07 ES ES99401701T patent/ES2229644T3/es not_active Expired - Lifetime
- 1999-07-07 AT AT99401701T patent/ATE277496T1/de not_active IP Right Cessation
- 1999-07-07 EP EP99401701A patent/EP0973362B1/fr not_active Expired - Lifetime
- 1999-07-07 DE DE69920343T patent/DE69920343T2/de not_active Expired - Fee Related
- 1999-07-15 US US09/353,798 patent/US6096993A/en not_active Expired - Fee Related
- 1999-09-02 CA CA002281394A patent/CA2281394A1/fr not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2534107A1 (fr) * | 1982-10-01 | 1984-04-06 | Soudure Autogene Francaise | Torche de travail a l'arc munie d'une coiffe amovible |
GB2192821A (en) * | 1986-06-27 | 1988-01-27 | Wtc Holdings Limited | Air plasma arc torch |
DE3714995A1 (de) * | 1987-05-06 | 1988-11-17 | Wilhelm Dinse | Vorrichtung zum plasmaschneiden und -schweissen von metallischen werkstuecken |
JPS6457982A (en) * | 1987-08-28 | 1989-03-06 | Hitachi Seiko Kk | Plasma torch |
DE4313830A1 (de) * | 1993-04-28 | 1994-11-03 | Binzel Alexander Gmbh Co Kg | Lichtbogenschweiß- oder -schneidbrenner |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 252 (M - 836) 12 June 1989 (1989-06-12) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110169207A (zh) * | 2017-01-13 | 2019-08-23 | 海别得公司 | 禁用等离子弧焊枪及相关系统和方法 |
Also Published As
Publication number | Publication date |
---|---|
US6096993A (en) | 2000-08-01 |
EP0973362B1 (fr) | 2004-09-22 |
FR2781328B1 (fr) | 2000-08-18 |
FR2781328A1 (fr) | 2000-01-21 |
DE69920343D1 (de) | 2004-10-28 |
DE69920343T2 (de) | 2005-11-17 |
CA2281394A1 (fr) | 2001-03-02 |
ATE277496T1 (de) | 2004-10-15 |
ES2229644T3 (es) | 2005-04-16 |
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