Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7342200 | Torch for arc welding A welding torch has a nozzle; a contact tip positioned within the nozzle; a tube extending from the nozzle; wherein the tube has a gooseneck portion having a radius, and the tube has a second portion adjacent the nozzle which has a longitudinal axis which is substan... | 03/11/2008 |
| 7329826 | Nozzle assembly for welding torch 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 noz... | 02/12/2008 |
| 7309844 | Multi-piece front loading liner An improved liner for protecting an electrode wire within a body of a welding torch. The liner includes a liner retainer, which is removably coupled to a liner insert. The liner retainer is secured to a distal end of the welding torch and the liner insert is inserte... | 12/18/2007 |
| 7259348 | Welding torch having integral gas lens and collet and method of operating same A welding torch member for securing an electrode to a welding torch is provided. The welding torch member may be adapted to capture the electrode and to enable gas to flow through the welding torch member. The welding torch member may be adapted with a first portion... | 08/21/2007 |
| 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 |
| 7161109 | Gas metal arc welding of coated steels and shielding gas therefor This invention relates to a method for gas metal arc welding of coated steels, and a shielding gas therefor, in which the method comprises: (a) forming an arc between a consumable wire electrode and a coated steel workpiece; ... | 01/09/2007 |
| 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 |
| 7084373 | Torch for MIG welding 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 in... | 08/01/2006 |
| 7067214 | PEM fuel cell stack assembly with isolated internal coolant manifold A PEM fuel cell assembly includes cooler plates (10) with internal coolant manifolds (25) isolated from the cell stack assembly by an isolation gap (28) to minimize the risk of contamination of the cells by antifreeze. The internal coolant manif... | 06/27/2006 |
| 6998575 | Welding gun An in-line welding gun includes a mounting block, a wire feed mechanism and a torch barrel. A motor is positioned behind the mounting block along a longitudinal axis of the gun. The torch barrel curves away from the longitudinal axis. The motor and the torch barrel ... | 02/14/2006 |
| 6987237 | 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 ... | 01/17/2006 |
| 6987244 | Self-contained locking trigger assembly and systems which incorporate the assembly 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... | 01/17/2006 |
| 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 |
| 6936789 | Triggerless welding implement and method of operating same A magnetically-actuated switch adapted to control a welding device. The magnetically-actuated switch may comprise a set of electrical connectors that are brought into electrical communication with one another by magnetic force. The magnetically-actuated switch may b... | 08/30/2005 |
| 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 |
| 6852950 | Welding gun having a removable nozzle end portion and method for operating same 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 ... | 02/08/2005 |
| 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 |
| 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 |
| 6740848 | Welding torch for use in gas metal arc welding 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... | 05/25/2004 |
| 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 |
| 6538234 | Gas shielded arc welding method 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 ... | 03/25/2003 |
| 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 |
| 6444950 | MIG gun nozzle with self centering, quick release screw and 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... | 09/03/2002 |
| 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 |
| 6060690 | Welding nozzle for improved gas coverage A welding nozzle contains a plurality of orifices through which a shielding gas is directed. The shielding gas is routed by an inner member to flow directly onto the weld area in an axial direction through the inner member and in a radial direction throug... | 05/09/2000 |
| 5973292 | Flared nozzle for welding gun and device for making same A nozzle for welding gun having a torch body and a device for making the same are provided. The nozzle includes a generally cylindrical tube having an inner peripheral surface defining a passageway adapted for receiving a welding wire therethrough. The ge... | 10/26/1999 |
| 5844201 | Welding torch apparatus A welding torch apparatus for use with conventional arc welding torches which have a gooseneck, a gas nozzle with an interior and a longitudinal axis, a first passageway for supplying of both a welding wire to a tip, and gas mixtures to a gas diffuser. Th... | 12/01/1998 |
| 5772102 | Gas lens assembly A gas lens assembly for an arc welding torch includes a lens body having a rearward end and a forward end, a passage through the lens body from its forward end to its rearward end for receiving an electrode therethrough and for permitting flow of an inert... | 06/30/1998 |
| 5635090 | Two position adjustable nozzle A GMAW gun has a nozzle that is axially slidable over a gas diffuser. The nozzle is positively located in one of two different positions by a double counterbored insulator in cooperation with an insulative retaining ring. When the double counterbored insu... | 06/03/1997 |
| 5473140 | Welding nozzle retaining ring A welding nozzle retaining ring has a polygon configuration with alternating peaks and straight segments. One segment is cut. The retaining ring is sized such that the peaks lie along a circle having a diameter that is slightly greater than the inner diam... | 12/05/1995 |
| 5257732 | Laminar barrier inert fluid shield apparatus The present invention relates to processes and apparatus for welding or joining metal parts which comprise moving a welding torch in a direction along a joint between said parts, causing a molten pool of metal with said welding torch along the joint and d... | 11/02/1993 |
| 5153895 | Nonconsumable, water-cooled electrode for electric metal smelting device A nonconsumable water-cooled electrode for electric metal smelting furnaces which includes inner and outer concentric steel tubes defining an annular space therebetween through which cooling water may be passed. A tungsten tip is attached to the tubes at ... | 10/06/1992 |
| 5152453 | Laminar barrier inerting for leading and/or trailing shield in welding application The present invention relates to processes and apparatus for welding or joining metal parts which comprise moving a welding torch in a direction along a joint between said parts, causing a molten pool of metal with said welding torch along the joint and d... | 10/06/1992 |
| 5084605 | Welding torch having improved gas jetting capability There is disclosed a welding torch provided with orifice plate. The orifice plate is screwed to an outer circumference of a gas diffuser and has a plurality of apertures staggered in the peripheral surface thereof in the axial direction thereof.... | 01/28/1992 |
| 4866236 | Flexible extendable backing shield for welding reactive metals A flexible extendable backing shield for use with the welding of reactive metals such as titanium. The backing shield provides a means for selectively distributing the inert gas along the length of the shield and then diffusing the inert gas to the root s... | 09/12/1989 |
| 4788401 | Inert gas welding torch The present invention is a tungsten inert gas or similar welding torch which is readily adjustable in length for different welding situations. The torch has a relatively conventional head with a heat shield attached at the lower end. The heat shield serve... | 11/29/1988 |
| 4749839 | Welding torch gas cup extension A gas cup extension assembly (10) is mounted on a standard electric welding torch gas cup (11) to enable welding in areas with limited access. The gas cup assembly (10) has a tubular insert (14) that fits within the gas cup (11) but extends a lower extern... | 06/07/1988 |
| 4731518 | Gun and cable for gas metal arc welding An electrode gun and cable for feeding a welding electrode and shielding gas to a workpiece having an improved arrangement for supplying the gas to the arc and for electrifying the electrode in the contact tip. The cable is designed to resist abuse and pu... | 03/15/1988 |
| 4599505 | Flexible trailing shield for welding reactive metals A flexible trailing shield for providing nonreactive gas shielding to arc lding operations comprises a housing formed of interlocking transverse segments adapted to flexibly cover weld surfaces having varying configurations. The housing has a torch entran... | 07/08/1986 |
| 4591685 | Narrow gap welding torch A narrow gap welding torch using a twisted wire center electrode. The torch has water-cooled gas bars and a water-cooled center. The gas bar delivers shielding gas to the weld site at a flow of about 100 cu.ft./hr. The water-cooled gas bars and center bar... | 05/27/1986 |
