Having Gas Flow Limiting Shape (e.g., Gas Diffuser) Patents (Class 219/137.42)
  • Patent number: 10610948
    Abstract: A nozzle assembly for a welding torch and a welding torch including said nozzle assembly is provided. The nozzle assembly generally comprises a base defining a distal threaded portion for securing the nozzle assembly to a distal end portion of a conductor tube of the welding torch, the base defining a distal threaded portion and a nose defining a mating threaded portion adapted to engage the distal threaded portion of the base, thereby removably securing the nose to the base. The distal threaded portion may comprise tapered Edison threads or a shell thread design.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: April 7, 2020
    Assignee: Victor Equipment Company
    Inventors: Khalid Hassan, Glenn K. Redding
  • Patent number: 10486271
    Abstract: A welding apparatus having a welding tool and a weld cooling apparatus for forced cooling of the weld zone. The welding tool has a welding nozzle with a longitudinal axis, and the weld cooling apparatus uses a source of CO2 as the coolant. A coolant delivery conduit is arranged to move with the welding tool and has a first tube with a longitudinal axis that extends alongside the welding tool, and a second tube with a longitudinal axis extending downwardly and away from the welding tool. A coolant nozzle is located at the end of the second tube to eject coolant at the weld zone. The coolant nozzle outlet is spaced from the workpiece and arranged to direct a jet of coolant behind the welding tool onto the weld zone at least 10 mm from the longitudinal axis of the first tube.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 26, 2019
    Assignee: LINDE AKTIENGESELLSCHAFT
    Inventors: Walter Mark Veldsman, Roger O'Brien
  • Patent number: 10384291
    Abstract: An electric arc welding system and method includes providing a welding apparatus having at least a welding power supply, a wire feeder configured to supply a welding wire, a welding gun having an opening from which the welding wire extends, and a welding controller. The controller can initiate a weld ending process, which senses any contact between the welding wire and a workpiece. In response to any such contact, the controller executes a wire material transfer routine to transfer molten material of the welding wire from the welding wire to the workpiece. This routine can be repeated until the wire feeder stops advancing the welding wire towards the workpiece during the weld ending process.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: August 20, 2019
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Judah Henry, William T. Matthews
  • Patent number: 10092972
    Abstract: A diffuser insert is provided for use with a welding diffuser and contact tip assembly comprising a diffuser with an interior chamber configured to receive a wire conduit that supplies electrode wire and a shielding gas used during a welding operation and a contact tip coupled to the diffuser and configured to receive electrode wire. The diffuser insert comprises a diffuser insert body configured to be disposed within the interior chamber of the diffuser, and further comprises an insert bore extending therethrough configured to receive electrode wire. An outer periphery of the diffuser insert has at least one surface feature configured to manipulate a flow of said shielding gas from within said interior chamber of the diffuser and out of exit passages to thereby direct said flow of shielding gas about a molten welding puddle formed during a welding operation.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: October 9, 2018
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Brian Meess, Jeffrey Kachline
  • Patent number: 9889519
    Abstract: A consumable assembly for use in an arc welding apparatus is provided that includes a nozzle assembly having a nozzle body, an insulator disposed within the nozzle body, and a nozzle insert disposed within the insulator. The nozzle insert includes an internal gas diverter. A contact tip is disposed within the nozzle assembly and includes at least one aperture extending from an exterior portion to an internal cavity, an exit orifice, a distal end face, and an exterior surface extending between the at least one aperture and the distal end portion of the contact tip. The internal gas diverter directs a flow of shield gas exiting the at least one aperture along the exterior surface of the contact tip, and a principal distance from the at least one aperture to the distal end face is varied to adjust the flow of the shield gas for improved cooling.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: February 13, 2018
    Assignee: Victor Equipment Company
    Inventor: Khalid Hassan
  • Patent number: 9878394
    Abstract: A nozzle assembly for a welding torch, a welding torch that includes said nozzle assembly, and a method of using the welding torch is provided. The nozzle assembly generally comprises an insulator having a plurality of grooves around an outer periphery, a plurality of sealing members disposed within the grooves of the insulator; and a nozzle body slip-fit around the insulator, such that at least one of the insulator and the nozzle body define position indicia.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: January 30, 2018
    Assignee: Victor Equipment Company
    Inventors: Khalid Hassan, Glenn K. Redding
  • Patent number: 9833859
    Abstract: An electric arc torch includes a torch base, and a cooling conduit having a conduit wall forming a central axial bore and having a plurality of longitudinal cooling channels spaced circumferentially around the bore. The cooling channels extend through the conduit wall from a first end portion to a second end portion of the conduit. The cooling channels include both a plurality of cooling liquid distribution channels and a plurality of cooling liquid return channels alternately arranged within the conduit wall.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: December 5, 2017
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Jeffrey L. Kachline, Matthew Dingeldein
  • Patent number: 9597745
    Abstract: The constricting nozzle of the present invention includes (i) a cylindrical nozzle body disposed around the forward end of the tungsten electrode rod concentrically with the tungsten electrode rod and defines an annular high-speed gas passage between the nozzle body and the outer peripheral surface of the forward end of the tungsten electrode rod, (ii) a plurality of positioning projections that are protrudently formed on the inner peripheral surface of the nozzle body with predetermined intervals in the circumferential direction and that are arranged along the longitudinal direction of the nozzle body to hold the tungsten electrode rod in the center position of the nozzle body, and (iii) a plurality of gas-flow regulating grooves formed between the positioning projections and that extend in parallel in the longitudinal direction of the nozzle body and regulate the shielding gas (G) flowing through the high-speed gas passage.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: March 21, 2017
    Assignee: Akihisa Murata
    Inventor: Akihisa Murata
  • Patent number: 9511437
    Abstract: Various embodiments of the invention include solutions for chamber-less thermal joining. A first aspect includes a system for performing a thermal joining of a joint space defined by a metallic part without an environmental chamber thereabout. The system may include an induction coil for heating an area adjacent to the joint space defined by the metallic part for the thermal joining of the joint space. The system may also include a gas lens for directing a shielding gas towards the joint space, and a valve system for controlling a flow of the shielding gas from the gas lens. A vacuum system creates a negative pressure in the metallic part to urge the shielding gas through the joint space during the thermal joining, thus allowing thermal joining of the metallic part without an environmental chamber thereabout.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: December 6, 2016
    Assignee: General Electric Company
    Inventor: Kurt Allen Rakozy
  • Patent number: 9364915
    Abstract: A diffuser insert is provided for use with a welding diffuser and contact tip assembly comprising a diffuser with an interior chamber configured to receive a wire conduit that supplies electrode wire and a shielding gas used during a welding operation and a contact tip coupled to the diffuser and configured to receive electrode wire. The diffuser insert comprises a diffuser insert body configured to be disposed within the interior chamber of the diffuser, and further comprises an insert bore extending therethrough configured to receive electrode wire. An outer periphery of the diffuser insert has at least one surface feature configured to manipulate a flow of said shielding gas from within said interior chamber of the diffuser and out of exit passages to thereby direct said flow of shielding gas about a molten welding puddle formed during a welding operation.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 14, 2016
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Brian Meess, Jeff Kachline
  • Patent number: 9314868
    Abstract: The invention relates to a wire inlet nozzle (27) for fastening in a coupling (29) of a hose package (21), comprising a wire inlet element (32) and a fastening means (31) for a wire core (26) for guiding a welding wire (9), wherein a main body is formed between the wire inlet element (32) and the fastening means (31) and a cavity (56) is formed in the wire inlet element (32), in which cavity at least one sealing element (57) having an axial opening (59) for guiding the welding wire (9) is arranged. In order to prevent an escape of the protective gas in the wire inlet nozzle (27) in a direction opposite to the main conveying direction of the welding wire (9), the main body forms a first part (54) of the wire inlet element (32), and a second part (55) of the wire inlet element (32) can be detachably connected to the first part (54), and the main body is designed as a separating plane for independently fastening the wire core (26) and the sealing element (57).
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 19, 2016
    Assignee: Fronius International GmbH
    Inventors: Johannes Fuerlinger, Klaus Oberndorfer, Stefan Platzer
  • Patent number: 9095922
    Abstract: A purging system and method for providing an inert gas to a welding site. This comprises a reduction connector adapted to be connected to a source of inert gas having an inlet port and an outlet port, wherein the outlet port is connected to a cylindrical outlet bore within the reduction connector. There is a gas lens comprised of a solid cylinder of metal mesh disposed in the cylindrical outlet bore. Also provided is a cylindrical nozzle mounted to the reduction connector, the cylindrical nozzle being adapted to funnel the inert gas to the welding site.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: August 4, 2015
    Inventor: Jason Shearin
  • Publication number: 20150129571
    Abstract: A consumable assembly for use in an arc welding apparatus is provided that includes a nozzle assembly having a nozzle body, an insulator disposed within the nozzle body, and a nozzle insert disposed within the insulator. The nozzle insert includes an internal gas diverter. A contact tip is disposed within the nozzle assembly and includes at least one aperture extending from an exterior portion to an internal cavity, an exit orifice, a distal end face, and an exterior surface extending between the at least one aperture and the distal end portion of the contact tip. The internal gas diverter directs a flow of shield gas exiting the at least one aperture along the exterior surface of the contact tip.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 14, 2015
    Inventor: Khalid Hassan
  • Patent number: 8992226
    Abstract: A mock welding unicoupon for a virtual welding system includes a first exterior surface and a second exterior surface perpendicular to the first exterior surface. The first exterior surface and the second exterior surface together provide a plurality of grooves configured for simulation of a plurality of different types groove welds on the mock welding unicoupon. A curved exterior surface is configured for simulation of a pipe fillet weld on the mock welding unicoupon. A magnet source is configured to generate a magnetic field around the mock welding unicoupon for tracking movements of a mock welding tool with respect to the mock welding unicoupon.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: March 31, 2015
    Assignee: Lincoln Global, Inc.
    Inventors: Jason Leach, Antonius Aditjandra, Deanna Postlethwaite
  • Publication number: 20140312023
    Abstract: A welding gun neck for a welding gun includes an elongated tubular body having an end connectable to a gas diffuser. The elongated tubular body includes a threaded external surface adjacent the end. The threaded external surface defines a male, threaded portion. The male, threaded portion is mateable with a female thread of the gas diffuser. The threaded external surface includes a straight portion and an adjoining tapered portion. The welding gun neck is connectable to both a gas diffuser having a straight female thread and a gas diffuser having a tapered female thread.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 23, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Robert J. Centner, Duane S. Snapp, Robert L. Warning
  • Publication number: 20140263252
    Abstract: A welding gun includes a handle portion comprising a motor configured to move electrode wire through the welding gun. A diffuser comprises an interior chamber and a plurality of openings defining exit passages from the interior chamber to an exterior of the diffuser. A barrel is located between the diffuser and the handle portion and supplies to the diffuser from the handle portion. A contact tip extends from the diffuser and comprises a front portion, a rear portion, and a contact tip bore extending therethrough configured to receive the electrode wire. A diffuser insert is disposed within the interior chamber of the diffuser, including an insert bore extending therethrough configured to receive electrode wire, and an outer surface configured to direct debris from within the interior chamber of the diffuser towards exit passages to discharge the debris. The handle portion is configured to direct a flow of the shielding gas over the motor to cool the motor.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Grant Sadowski, Jeff Kachline, Wayne Gregg, Brian Meess, Ed Enyedy
  • Publication number: 20140263253
    Abstract: A diffuser insert is provided for use with a welding diffuser and contact tip assembly comprising a diffuser with an interior chamber configured to receive a wire conduit that supplies electrode wire and a shielding gas used during a welding operation and a contact tip coupled to the diffuser and configured to receive electrode wire. The diffuser insert comprises a diffuser insert body configured to be disposed within the interior chamber of the diffuser, and further comprises an insert bore extending therethrough configured to receive electrode wire. An outer periphery of the diffuser insert has at least one surface feature configured to manipulate a flow of said shielding gas from within said interior chamber of the diffuser and out of exit passages to thereby direct said flow of shielding gas about a molten welding puddle formed during a welding operation.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Brian Meess, Jeff Kachline
  • Publication number: 20140263250
    Abstract: A welding diffuser and contact tip assembly is provided for use with a welding apparatus. The assembly includes a diffuser with an interior chamber and a plurality of openings defining exit passages from the interior chamber to an exterior of the diffuser, and a contact tip coupled to the diffuser. The contact tip includes a front portion, a rear portion, and a contact tip bore extending therethrough configured to receive electrode wire. A diffuser insert is disposed within the interior chamber of the diffuser, including an insert bore extending therethrough configured to receive electrode wire, and an angled outer surface configured to direct debris from within the interior chamber of the diffuser towards exit passages to thereby discharge the debris to an exterior of the diffuser. In one example, the rear portion of the contact tip includes an angled outer surface defining the diffuser insert.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventors: Brian Meess, Jeff Kachline, Wayne Gregg, Grant Sadowski, Ed Enyedy
  • Publication number: 20140263251
    Abstract: The invention described herein pertains generally to split goosenecks (synonymously swan necks) having a fixed or non-fixed radius for use with welding guns.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Lincoln Global, Inc.
    Inventors: Edward A. Enyedy, Grant Taylor Sadowski, Brian David Meess, Jeffrey L. Kachline
  • Patent number: 8796587
    Abstract: A welding gun, including a contact tip assembly, a diffuser cap, a tip holder, and a shielding gas diffuser, where the shielding gas diffuser includes a casing and an axial tube extending within the casing, and where the casing and the tip holder are connected via a connection system that includes threads with reduced peaks.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 5, 2014
    Assignee: Lincoln Global, Inc.
    Inventor: Jeff Kachline
  • Patent number: 8772673
    Abstract: A welding gun, including a contact tip assembly, a diffuser cap, a tip holder, and a shielding gas diffuser, where the shielding gas diffuser includes a casing and an axial tube extending within the casing, and where the casing and the tip holder are connected via a connection system that includes threads with reduced peaks.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 8, 2014
    Assignee: Lincoln Global, Inc.
    Inventor: Jeffrey Kachline
  • Publication number: 20140131335
    Abstract: A welding gun adapted to secure a contact tip within the welding gun without threading the contact tip and without the use of tools. The contact tip may be adapted to abut a surface of a first member disposed within the welding gun. The surface may be a surface of a gas diffuser. The surface may be adapted to abut the contact tip. The contact tip also may be adapted for abutment with a second member to urge the contact tip toward the first member. The second member may be a portion of a nozzle adapted to abut the contact tip to urge the contact tip toward the surface of the first member. A method of assembling a welding gun also is provided. The method may include disposing a contact tip between a first and a second member and capturing the contact tip between the first and second members.
    Type: Application
    Filed: January 20, 2014
    Publication date: May 15, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventor: William R. Giese
  • Publication number: 20140091071
    Abstract: A securement member for securing a contact tip to a welding torch assembly is provided. A channel extends axially therethrough and has an internal shoulder that extends into this channel. This internal shoulder abuts against a shoulder on the contact tip, capturing the contact tip between the shoulder and a seating surface on the diffuser and securing the contact tip in the torch assembly. The contact tip is securely seated without threading engagement, facilitating quick release and installation. The exemplary securement member couples to the diffuser such that the egress of fluid from the diffuser is blocked when used for gasless welding. This blocking allows a user to leave the diffuser secured to the welding torch when a gasless electrode is in use.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 3, 2014
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventor: Matthew R. Dingeldein
  • Patent number: 8686317
    Abstract: A removable cooling collar is provided for cooling the nozzle of a welding nozzle. This collar includes first and second parts in fluid communication with a chamber that extends circumferentially within a hollow structure. Cooling fluid circulating through the chamber facilitates dissipation and/or extraction of heat in the nozzle, in turn reducing the likelihood of weld splatter adhesion on the nozzle.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: April 1, 2014
    Assignee: Illinois Tool Works Inc.
    Inventor: Robert J. Centner
  • Patent number: 8633422
    Abstract: A welding gun adapted to secure a contact tip within the welding gun without threading the contact tip and without the use of tools. The contact tip may be adapted to abut a surface of a first member disposed within the welding gun. The surface may be a surface of a gas diffuser. The surface may be adapted to abut the contact tip. The contact tip also may be adapted for abutment with a second member to urge the contact tip toward the first member. The second member may be a portion of a nozzle adapted to abut the contact tip to urge the contact tip toward the surface of the first member. A method of assembling a welding gun also is provided. The method may include disposing a contact tip between a first and a second member and capturing the contact tip between the first and second members.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: January 21, 2014
    Assignee: Illinois Tool Works Inc.
    Inventor: William R. Giese
  • Patent number: 8604388
    Abstract: A securement member for securing a contact tip to a welding torch assembly is provided. A channel extends axially therethrough and has an internal shoulder that extends into this channel. This internal shoulder abuts against a shoulder on the contact tip, capturing the contact tip between the shoulder and a seating surface on the diffuser and securing the contact tip in the torch assembly. The contact tip is securely seated without threading engagement, facilitating quick release and installation. The exemplary securement member couples to the diffuser such that the egress of fluid from the diffuser is blocked when used for gasless welding. This blocking allows a user to leave the diffuser secured to the welding torch when a gasless electrode is in use.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: December 10, 2013
    Assignee: Illinois Tool Works Inc.
    Inventor: Matt Dingeldein
  • Publication number: 20130270247
    Abstract: A welding gun, including a contact tip assembly, a diffuser cap, a tip holder, and a shielding gas diffuser, where the shielding gas diffuser includes a casing and an axial tube extending within the casing, and where the casing and the tip holder are connected via a connection system that includes threads with reduced peaks.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 17, 2013
    Inventor: Jeffrey KACHLINE
  • Publication number: 20130264324
    Abstract: A welding gun, including a contact tip assembly, a diffuser cap, a tip holder, and a shielding gas diffuser, where the shielding gas diffuser includes a casing and an axial tube extending within the casing, and where the casing and the tip holder are connected via a connection system that includes threads with reduced peaks
    Type: Application
    Filed: March 13, 2013
    Publication date: October 10, 2013
    Inventor: Jeff KACHLINE
  • Publication number: 20130126504
    Abstract: A consumable component for use in an arc welding apparatus is provided that functions as both a contact tip and a diffuser. The consumable component includes a body having an internal cavity extending from a proximal end portion to a distal end portion. At least one slot extends through an outer wall of the body, between the proximal end portion and the distal end portion and into the internal cavity. An exit orifice extends through the distal end portion of the body, defining a radiused inlet in one form of the present disclosure.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 23, 2013
    Applicant: VICTOR EQUIPMENT COMPANY
    Inventor: Victor Equipment Company
  • Patent number: 8426774
    Abstract: A welding gun, including a contact tip assembly, a diffuser cap, a tip holder, and a shielding gas diffuser, where the shielding gas diffuser includes a casing and an axial tube extending within the casing, and where the casing and the tip holder are connected via a connection system that includes threads with reduced peaks.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: April 23, 2013
    Assignee: Lincoln Global, Inc.
    Inventor: Jeff Kachline
  • Patent number: 8399804
    Abstract: A laser welding device for manufacturing a prismatic battery 10 of the invention has a pair of jigs 12A, 12B for securing a prismatic battery outer can B1, a gas supply section for supplying inert gas to welding points of a sealing cover B2 fitted to the prismatic battery outer can B1, and a laser unit 11 for irradiating laser beam. Each of the jigs 12A, 12B is provided with a slit-shaped blower outlet and the blower outlet is positioned below the welding points. The inert gas is supplied to the blower outlet from the gas supply section and is blown from the blower outlet to the welding points from below. The laser welding device for manufacturing a prismatic battery 10 can obtain a laser welding device that welds the sealing cover B2 fitted to the prismatic battery outer can B1 fast, preventing weld droops and allowing uniform welding.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: March 19, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Hiroshi Hosokawa, Haruhiko Yamamoto, Masato Nishikawa, Takahiro Nakamura, Hitoshi Kihara
  • Patent number: 8304693
    Abstract: A contact tip for a welding torch includes a refractory material reinforced copper composite including approximately 10 to 50% by volume of a refractory material and at least one of copper and a copper alloy. The refractory material is one of a metal and a ceramic material. The contact tip may include an elongated, generally cylindrical body having a front contact end, an opposite rear retaining end, and a passageway extending from the rear retaining end to the front contact end. A portion of the passageway may be defined by the refractory material reinforced copper composite. The portion may have a diameter that is approximately 3 to 8% larger than an outer diameter of a consumable electrode wire, and the portion may have a length of approximately 0.2 to 0.6 inches.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: November 6, 2012
    Assignee: Illinois Tool Works Inc.
    Inventor: Tiejun Ma
  • Publication number: 20110062130
    Abstract: A welding gun is provided that includes a handle having forward and rear end portions and having a first passageway formed therethrough. A cable support tube having forward and rear end portions and a second passageway formed therethrough is secured to the handle at the forward end portion. A welding cable having a forward end portion and a rear end portion connected to a rear connector assembly extends from the rear end portion through the first and second passageways of the handle and the cable support tube to the forward end portion disposed within the forward end portion of the cable support tube.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Applicant: Tweco Products, Inc.
    Inventors: Jim Barker, John Boisvert
  • Patent number: 7329826
    Abstract: A nozzle assembly operable to secure a porous disc within a welding torch. The nozzle assembly comprises a front nozzle member and a rear nozzle member. The front nozzle member is securable to the rear nozzle member. The porous disc is captured between the front nozzle member and the rear nozzle member when the front nozzle member is secured to the rear nozzle member.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: February 12, 2008
    Assignee: Illinois Tool Works Inc.
    Inventors: David Delgado, Michael Parker
  • Patent number: 7105775
    Abstract: A welding gun adapted to secure a contact tip within the welding gun without threading the contact tip and without the use of tools. The contact tip may be adapted to abut a surface of a first member disposed within the welding gun. The surface may be a surface of a gas diffuser. The surface may be adapted to abut the contact tip. The contact tip also may be adapted for abutment with a second member to urge the contact tip toward the first member. The second member may be a portion of a nozzle adapted to abut the contact tip to urge the contact tip toward the surface of the first member. A method of assembling a welding gun also is provided. The method may comprise disposing a contact tip between a first and a second member and capturing the contact tip between the first and second members.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: September 12, 2006
    Assignee: Illinois Tool Works Inc.
    Inventor: William R. Giese
  • Patent number: 7084373
    Abstract: A torch for MIG welding includes a gas nozzle for supplying a fluid therethrough to a workpiece, a tip disposed coaxially in the gas nozzle for supplying an electrode wire from a center thereof to a workpiece, and a rotor rotatably supported on the tip. The rotor includes a plurality of blades connected to a bearing rotatably supported on the tip for receiving rotary power due to a flow of fluid through the gas nozzle, a ring joining ends of the blades, and a plurality of spatter removal plates extending axially along an inner surface of the gas nozzle.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: August 1, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventors: Toshio Sugahara, Noritoshi Takasaki
  • Patent number: 6987237
    Abstract: Electrode and nozzle that seat within a retaining member and in two different seating locations relative to retaining member. The electrode and nozzle each include an interwoven-double-start thread having two thread cuts, which start 180 degrees from one another as measured around the circumference of the electrode or nozzle. Further, the electrode, nozzle, and retaining member include mating frustum surfaces, which are configured and dimensioned so that the electrode and nozzle seat within the retaining member with less than one turn of the electrode and nozzle relative to the retaining member. Therefore, the electrode and nozzle may be quickly inserted in, and removed from, the retaining member.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: January 17, 2006
    Assignee: American Torch Tip
    Inventor: Jeffrey Walters
  • Patent number: 6987244
    Abstract: A welding system having a welding implement with a self-contained trigger and trigger locking assembly. The self-contained trigger and trigger locking assembly has a trigger which, when operated, regulates the flow of current from a power source. The trigger lock of the assembly has a movable portion which includes a groove which can engage a complementary structure on the trigger to maintain the trigger in an operating position, thereby allowing continued flow of current from the power source.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: January 17, 2006
    Assignee: Illinois Tool Works Inc.
    Inventor: Gregory W. Bauer
  • Patent number: 6924461
    Abstract: A gas diffuser for a welding gun in which atmospheric air in the interior of the liner is substantially prevented from entering the contact tip hole. The gas diffuser includes a cradle having a hole and a section of a concave surface disposed around a periphery of the hole, and an outer peripheral body having a first axial bore on one side of the cradle and a second axial bore on the other side of the cradle. The outer peripheral body includes one or more generally axial slots, each slot having one end that opens into the first axial bore and another end that opens into the second axial bore. Each slot is open to the exterior of the diffuser along its length and is disposed radially outward of the cradle. The first and second axial bores communicate via the hole in the cradle and via the slots.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: August 2, 2005
    Assignee: Illinois Tool Works Inc.
    Inventor: Nicholas A. Matiash
  • Patent number: 6852950
    Abstract: A welding gun having a removable end portion. The end portion may be adapted to direct gas from the welding gun. The end portion may be conical-shaped. The end portion may be removed without tools. The end portion also may be adapted to be secured to and/or removed from the welding gun in a linear movement. A method of assembling a welding gun. The method may comprise urging a nozzle end member and a nozzle body into engagement to secure the nozzle end member to the nozzle body.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: February 8, 2005
    Assignee: Illinois Tool Works Inc.
    Inventor: William R. Giese
  • Patent number: 6847009
    Abstract: A welding contact tip and diffuser assembly for use in a welding apparatus. The assembly includes an electrically conductive contact tip having a tapered exterior surface, a diffuser having a cavity with a tapered interior surface, and a releasable connection for holding the contact tip in the diffuser. The connection includes at least one detent element in either the diffuser or the contact tip, at least one recess forming a ramp in the other of the diffuser or contact tip, and at least one spring. The spring biases the detent element into the recess and against the ramp to generate an axial force against the ramp. The axial force tends to urge the tapered surfaces of the contact tip and diffuser into contact with one another.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: January 25, 2005
    Assignee: Tweco Products, Inc.
    Inventors: Kyle Stuart, Rondell L. Longhofer
  • Patent number: 6744013
    Abstract: A welding torch (2) for use in gas metal arc welding, including a neck portion (4), a diffuser (6) at a first end (8) of the neck portion (4), a contact tip (10) which extends from the diffuser (6), and connector means (12) which is at a second end (14) of the neck portion (4) and which is for connecting the neck portion (4) to a power cable assembly; the neck portion (4) including an electrical conductor (16) and a longitudinally extending passageway (18); electrical current transfer from the electrical conductor (16) to the contact tip (10) being effected using first and second longitudinally separated contact areas (22, 24) on the contact tip (10); and the welding torch (2) including a gas chamber (30) which is positioned longitudinally between the two contact areas (22, 24) and radially between the contact tip (10) and the diffuser (6).
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: June 1, 2004
    Assignee: Parweld Limited
    Inventor: Donald Frederick Jones
  • Patent number: 6740848
    Abstract: A welding torch (2) for use in gas metal arc welding, which welding torch (2) comprises a neck portion (4), a diffuser (6) at a first end (8) of the neck portion (4), a contact tip (10) which extends from the diffuser (6), connector means (12) which is at a second end of the neck portion (4) and which is for connecting the neck portion (4) to a power cable assembly (16), and a trigger switch (114): the power cable assembly being such that it supplies electricity and gas to the welding torch (2) with the gas being for protecting welds from atmospheric contamination as the welds are made using the welding torch (2); the neck portion (4) being such that it comprises an electrical conductor (20) and a passageway (22) for the gas; the neck portion (4) being such that it comprises insulation (26) in the form of an overmoulding of a plastics material, the overmoulding being such that it also provides rigidity and impact strength to the neck portion (4); the trigger switch (114) being a snap fit in position in a sock
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: May 25, 2004
    Assignee: Parweld Limited
    Inventor: Tracy Stephen Parker
  • Publication number: 20040074888
    Abstract: A gas diffuser for a welding gun in which atmospheric air in the interior of the liner is substantially prevented from entering the contact tip hole. The gas diffuser comprises a cradle having a hole and a section of a concave surface disposed around a periphery of the hole, and an outer peripheral body having a first axial bore on one side of the cradle and a second axial bore on the other side of the cradle. The outer peripheral body comprises one or more generally axial slots, each slot having one end that opens into the first axial bore and another end that opens into the second axial bore. Each slot is open to the exterior of the diffuser along its length and is disposed radially outward of the cradle. The first and second axial bores communicate via the hole in the cradle and via the slots.
    Type: Application
    Filed: December 31, 2002
    Publication date: April 22, 2004
    Inventor: Nicholas A. Matiash
  • Publication number: 20040026394
    Abstract: A welding gun having a removable end portion. The end portion may be adapted to direct gas from the welding gun. The end portion may be conical-shaped. The end portion may be removed without tools. The end portion also may be adapted to be secured to and/or removed from the welding gun in a linear movement. A method of assembling a welding gun. The method may comprise urging a nozzle end member and a nozzle body into engagement to secure the nozzle end member to the nozzle body.
    Type: Application
    Filed: August 9, 2002
    Publication date: February 12, 2004
    Inventor: William R. Giese
  • Patent number: 6689987
    Abstract: A MIG welding gun contact tip has a cylindrical section with a predetermined outer diameter adjacent one end, and frusto-conical surface adjacent the other end. Threads are rolled from the cylindrical section outer diameter between the cylindrical section and the frusto-conical surface. The threads major diameter is larger than the cylindrical section outer diameter, and the threads minor diameter is less than the cylindrical section outer diameter. In a preferred embodiment, the cylindrical section outer diameter is approximately 0.350 inches, the threads have a major diameter of approximately 0.375 inches, and the threads are stub acme threads with a pitch of 14 threads per inch. The contact tip is assembled to a diffuser having mating threads and a frusto-conical surface that engages the contact tip frusto-conical surface when the contact tip has been turned a single turn into the diffuser.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 10, 2004
    Assignee: Illinois Tool Works Inc.
    Inventors: Kenneth C. Altekruse, Ronald W. Colling
  • Publication number: 20030057196
    Abstract: A welding torch (2) for use in gas metal arc welding, comprising a neck portion (4), a diffuser (6) at a first end (8) of the neck portion (4), a contact tip (10) which extends from the diffuser (6), and connector means (12) which is at a second end (14) of the neck portion (4) and which is for connecting the neck portion (4) to a power cable assembly; the neck portion (4) comprising an electrical conductor (16) and a longitudinally extending passageway (18); electrical current transfer from the electrical conductor (16) to the contact tip (10) being effected using first and second longitudinally separated contact areas (22, 24) on the contact tip (10); and the welding torch (2) including a gas chamber (30) which is positioned longitudinally between the two contact areas (22, 24) and radially between the contact tip (10) and the diffuser (6).
    Type: Application
    Filed: August 23, 2002
    Publication date: March 27, 2003
    Inventor: Donald Frederick Jones
  • Patent number: 6538234
    Abstract: Gas shielded arc welding is performed using gas nozzle 10 which includes a straight portion 14 that permits the shielding gas flows from orifices 18 to flow parallel to the axial direction and a constricted portion 20 continuous from the straight portion 14 that constricts the gas flows from the straight portion 14 as they travel toward the distal end and the nozzle 10 satisfies the following relations (1) and (2): 1.5≦(Dp/Do)≦2.5  (1) 1.0≦(L/Dp)  (2) where Dp is the inside diameter of the straight portion 14, Do is the inside diameter of the distal gas outlet of the constricted portion 20, and L is the axial length of the constricted portion 20.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: March 25, 2003
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Kazuhiro Toyoda, Noboru Yamamoto, Shigeo Hanajima
  • Publication number: 20030052111
    Abstract: A welding torch (2) for use in gas metal arc welding, which welding torch (2) comprises a neck portion (4), a diffuser at a first end (6) of the neck portion (4), a contact tip which extends from the diffuser, and connector means which is at a second end (8) of the neck portion (4) and which is for connecting the neck portion (4) to a power cable assembly: the power cable assembly being such that it supplies electricity and gas to the welding torch (2) with the gas being for protecting welds from atmospheric contamination as the welds are made using the welding torch (2); the neck portion (4) being such that it comprises an electrical conductor (10) and a passageway for the gas; and the neck portion (4) being such that it comprises insulation (12) in the form of an overmoulding of a plastics material, the overmoulding being such that it also provides rigidity and impact strength to the neck portion (4).
    Type: Application
    Filed: August 23, 2002
    Publication date: March 20, 2003
    Inventor: Tracy Stephen Parker
  • Patent number: 6525297
    Abstract: A MIG welding gun has a diffuser with an external thread and a frusto-conical back ramp. A nozzle assembly includes an insert with a back ramp and a thread that mates with the diffuser thread. The threads of the diffuser and insert have respective ramps that mate. A single turn of the nozzle assembly on the diffuser causes simultaneous engagement of the insert and diffuser back ramps and of the insert and diffuser thread ramps. Such engagement centers the nozzle to be concentric with the diffuser and also produces a wedging action that retains the nozzle assembly on the diffuser until a relatively substantial reverse torque is applied to the nozzle assembly. The nozzle front end has a narrow annulus, which reduces the amount of radiant heat from the welding arc that reaches the nozzle.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 25, 2003
    Assignee: Illinois Tool Works Inc.
    Inventor: James E. Doherty