Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8389902 | Portable weld cooling systems Portable weld cooling systems include a plurality of weld cooling instruments operable to combine to provide cool air to a weld area created by a weld fusion machine, and a portable cabinet comprising a transportation section and a storage section, the transportatio... | 03/05/2013 |
| 8383987 | Welding contact tips for pulse applications A contact tip for a welding torch includes a body having a front discharge end, an opposite rear feed end, and a bore extending through the body. A cap is mounted on the body at the front end. The cap has an aperture generally aligned with the bore. The cap is compo... | 02/26/2013 |
| 8357877 | Front consumables for pulse GMAW torches A contact tip for a welding torch in accordance with the present invention includes an elongated, generally cylindrical body having a front contact end and an opposite rear retaining end. A central aperture is defined by an inner wall of the body. The aperture exten... | 01/22/2013 |
| 8338753 | Contact tip and diffuser A contact tip includes a first threaded section and a first non-threaded section. The length of the first non-threaded section is at least a fifth of the length of the first threaded section along a longitudinal axis. The contact tip further includes a first contact... | 12/25/2012 |
| 8309887 | Arc-welding torch, wear detection system for power supply portion of contact tip, and wear detection method for contact tip A welding torch includes: a contact tip having, on a distal-end inner circumferential surface thereof, a power supply portion that contacts a fed welding wire to supply current; and a wire guide that is provided having a predetermined clearance within the contact ti... | 11/13/2012 |
| 8304693 | Refractory materials reinforced composites for the GMAW contact tips 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 m... | 11/06/2012 |
| 7576300 | Welding gun having contact tip and method of operating same 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... | 08/18/2009 |
| 7557327 | Method of pulse welding and contact tip therefor A contact tip for a welding gun having a central passage for a welding wire moving in a given direction toward a workpiece and receiving a welding signal by contact of the wire with the tip. The passage has an innermost end, an outermost exit end and a length of at ... | 07/07/2009 |
| 7381923 | Consumable electrode arc welding A contact tip suitable for electric arc welding has a consumable electrode. The contact tip has a body which defines a bore through which the electrode is able to pass to enable electric current from a welding power supply to be transferred from the body to the elec... | 06/03/2008 |
| 7271366 | Welding gun contact tip A contact tip for a welding gun includes an elongate body having a first end, a second end, and a first opening extending longitudinally between the first end and the second end. The elongate body has an outer surface and an inner surface. The elongate body has a se... | 09/18/2007 |
| 7262386 | Method of pulse welding and contact tip therefor A contact tip for a welding gun having a central passage for a welding wire moving in a given direction toward a workpiece and receiving a welding signal by contact of the wire with the tip. The passage has an innermost end, an outermost exit end and a length of at ... | 08/28/2007 |
| 7230203 | Protective cap for a contact pipe in a welding torch in addition to a welding torch equipped with said cap The invention relates to a protective cap for at least one contact pipe of a welding torch, the pipe or pipes having a respective bore for guiding and contacting a respective welding rod that is fed through the pipe or pipes. The cap comprises a housing consisting o... | 06/12/2007 |
| 7208699 | Spool gun having unitary shielding gas and weld power connector A spool gun having a quick connector connectable to an electrical power source and a gas source is disclosed. A connection line extends from the spool gun and is attached to a connector. The connector both fluidly connects the spool gun to a shielding gas source and... | 04/24/2007 |
| 7196284 | Welding gun having rotational swivel coupling A welding gun having a swivel coupling joining the posterior end of the gun to the handle thereby allowing the handle and gooseneck to be rotated without having to rotate the posterior end of the gun and the wire cable feed line, the swivel coupling providing a cond... | 03/27/2007 |
| 7191968 | System for handling welding wire and method of handling welding wire using the system A coiled supply of welding wire in combination with a container. The container has a main body defining an upwardly opening receptacle with bottom wall and a radially inwardly facing surface on a peripheral wall extending upwardly from the bottom wall. The container... | 03/20/2007 |
| 7176412 | Taper locking features between components of a welding device Locking engagement connections between various components of a welding device can include tapered features having varied thread patterns and/or varied angles to ensure that the components remain tight during service. For example, locking engagement connections can b... | 02/13/2007 |
| 7119303 | Welding current nozzle material The invention relates to a welding current nozzle material used in the welding current nozzle for feeding filler material in MIG-type welding. The material used in the welding current nozzle according to the invention is a copper-based alloy where silver is alloyed.... | 10/10/2006 |
| 7105775 | Welding gun having contact tip and method of operating same 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... | 09/12/2006 |
| 7094990 | Contact nozzle for electric arc welding Contact nozzle 1 for electric arc welding with continuous welding wire 30 flowed through by welding current, which nozzle 1 can be connected to a welding torch and comprises an electrically conductive contact tube 10 with a longitudinal t... | 08/22/2006 |
| 7067768 | Motor driven resistance spot welding gun A motor-driven welding gun has a servomotor for displacing a movable electrode tip toward and away from a fixed electrode tip. The servomotor has a motor housing with a copper pipe which is inserted therein when the motor housing is cast. The copper pipe provides a ... | 06/27/2006 |
| 7022934 | Connecting adapter for weld electrode An electrically and thermally conductive adapter for connecting a weld electrode to a tip holder portion of a welding device. The adapter has a first, threaded end, for removable engagement with a like-threaded receiving cavity in the tip holder. The threads may be ... | 04/04/2006 |
| 6943318 | Welding tip for arc welding and arc welding apparatus A contact provided in a welding tip of an arc welding apparatus includes a tip body adapted to be mounted to a welding torch body and a tip end member formed integrally therewith. The tip end member is divided into two parts, i.e., first and second halves by means o... | 09/13/2005 |
| 6924461 | Gas diffuser for head tube assembly of welding gun 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 t... | 08/02/2005 |
| 6888092 | Electrodes and nozzles having improved connection and quick release 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 ... | 05/03/2005 |
| 6847009 | Welding contact tip and diffuser 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 ho... | 01/25/2005 |
| 6825432 | Apparatus and method for forming a body A method of forming a body by deposition of a weld material comprises providing a welding head (12), providing a foundation (52) upon which the body is to be formed. A weld material is supplied from a supply (22). The welding head (12) an... | 11/30/2004 |
| 6759623 | Radial tube torch head A torch head having a base section, a tip section and three or more radial rods connected between the base section and the tip section. The radial rods form a generally circular inner chamber which inner chamber includes an electrode. One or more of the radial rods ... | 07/06/2004 |
| 6744013 | Welding torch for use in gas metal arc welding 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 mean... | 06/01/2004 |
| 6710300 | Contact tip assembly for mig gun A current path for a mig welding gun assures a reliable and stable interface between a welding gun and a weld wire. In one embodiment, the current path is through a conductive insert that fits in the welding gun diffuser. Fingers of the insert resiliently contact th... | 03/23/2004 |
| 6689988 | Welding gun having a plated tip and method for making same An arc welding system using a wire to produce an arc. The arc welding system comprising a welding handle. A tip being disposed in the welding handle to direct wire through the welding handle. The tip having a passage through the tip to receive the wire. T... | 02/10/2004 |
| 6689987 | Welding contact tip with rolled threads 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... | 02/10/2004 |
| 6657162 | Burner head of an electric arc welding or cutting burner with contact nozzle supported in positive fit The invention relates to a burner head (9) of an electric arc welding or cutting head, with preferably a melting wire electrode, having a contact nozzle (1) and a spring chuck (2) for releasably holding the contact nozzle (1) on the burner head (9). Both ... | 12/02/2003 |
| 6627834 | Wire electrical discharge apparatus The shape of each electrical supply die for contact-supplying electricity to a wire electrode is changed to a cylindrical shape, and grooves are provided in its outer surface in parallel to the traveling direction of the wire, wherein upper electric suppl... | 09/30/2003 |
| 6559416 | Alternate current path for mig gun A current path for a mig welding gun assures a reliable and stable interface between a welding gun and a weld wire. In one embodiment, the current path is through a conductive insert that fits in the welding gun diffuser. Fingers of the insert resiliently... | 05/06/2003 |
| 6525297 | Mig gun nozzle with reduced cross-sectional area at the front 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 t... | 02/25/2003 |
| 6495798 | Radial tube torch head A torch head having a base section, a tip section and three or more radial rods connected between the base section and the tip section. The radial rods form a generally circular inner chamber which inner chamber includes an electrode. One or more of the r... | 12/17/2002 |
| 6429406 | Contact tip The invention relates to a contact tip for a welding or cutting torch which includes at least one internal opening for guiding and engaging at least one welding electrode, wherein the internal opening is produced by deep drilling in a bar-shaped semi-fini... | 08/06/2002 |
| 6307179 | Wire welding gun having improved connection between a contact tip and its mating part A welding gun contact tip which seats within a retaining member and in two different seating locations relative to the contact member. The contact tip includes an interwoven-double-start thread having two thread cuts which start 180 degrees from one anoth... | 10/23/2001 |
| 6259059 | Arc welder and torch for same In an electric arc welder for creating an arc welding process between a consumable electrode advancing through a contact tip and a workpiece, the welder including a power supply to create an arc current and arc voltage and having a first lead connected to... | 07/10/2001 |
| 6225599 | Mig gun with axially aligned offset motor A mig welding gun handle is in two sections that are offset from each other by an angle of approximately 20 degrees. The offset handle makes the gun exceptionally comfortable for an operator to maneuver when welding various workpieces. A non-right angle g... | 05/01/2001 |
