Assignee: Lincoln Global, Inc.

Location: Cleveland, OH
No. of patents: 31

Number	Title	Issue Date
RE43352	Mechanism for braking the unwinding of a bundle of metallic wire housed in a drum A circular crown shaped pressure disk (1), furnished with, on its external rim, jutting stirrup shaped, flexible elements (2) whose size makes them press on the internal surface of the drum (7) within which the disk is housed. The internal rim o...	05/08/2012
7022942	Tandem electrode welder and method of welding with two electrodes An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding ...	04/04/2006
7004419	Apparatus for packing wire in a storage container by use of reverse winding A method and apparatus for packing welding wire in a storage container to reduce the amount of shifting of the welding wire in the storage container and the number of incidence of tangles (e.g., bird nesting, etc.) occurring during the payout of the welding wire fro...	02/28/2006
6956185	Tandem electrode welder and method of welding with two electrodes An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding ...	10/18/2005
6909068	All-terrain undercarriage A moveable undercarriage for supporting and moving a welder over a ground surface having a base to support the welder, a front and rear axle secured to the base each having two wheels rotatably secured to the axles, and a push bar secured to said base to move the ba...	06/21/2005
6870132	Power supply for electric arc welding A power supply connectable to a source of AC line voltage for AC electric arc welding by an AC arc current across a welding gap between an electrode and a workpiece, the power supply comprises a high capacity transformer that converts said line voltage to an AC outp...	03/22/2005
6215100	Short circuit welder An apparatus and method of short circuit arc welding two spaced ends of two pipe sections at a groove between the two pipe sections. The method and apparatus include the use of a cored metal electrode and moving the electrode toward the groove as the elec...	04/10/2001
6177645	Electric arc welder and plasma cutter A single phase power supply module for electric arc welders and plasma arc cutters comprising: a single phase input stage; positive and negative output terminals; a full wave rectifier connected to the input stage for rectifying the single phase voltage a...	01/23/2001
6172333	Electric welding apparatus and method An apparatus and method for welding the gap between two ends of adjacent first and second pipe sections comprising: moving a first consumable electrode along the end of the first pipe section; moving a second consumable electrode along the end of the seco...	01/09/2001
6155421	Wire electrode liner A wire coil for packaging wire which wire coil includes a liner, wire coiled about the liner and at least one wire tie which secures the coil of wire to the liner. The liner is made of a strip of flexible material and the two ends of the strip are secured...	12/05/2000
6137081	Electrode and method of making same A welding wire for use in electric arc welding and method of making same, wherein the wire has an effective outer diameter and comprises a length of solid metal formed into a series of distinct segments each having a selected volume and having a narrow re...	10/24/2000
6111216	High current welding power supply In a welding power supply for creating welding current in a succession of current pulses with a maximum current level and a trailing off state which current pulses passing through a series circuit including an inductor and electrode in welding relationshi...	08/29/2000
6093906	Method of pipe welding A method of welding the ends of two pipes at the open root between the spaced ends by an STT electric arc welder, which comprises: selecting a welding wire having 0.06-0.15% by weight carbon, 0.90-1.40% by weight manganese, and 0.45-0.75% by weight silico...	07/25/2000
6091612	Universal power supply for arc welder A single phase power supply for electric arc welders comprising: a full wave rectifier forming the input of said power supply; a valley fill power factor correcting circuit for controlling input current flow to the rectifier and creating an high crest fac...	07/18/2000
6087627	Method of controlling a welding process and controller therefor A controller and method for adjusting an output welding parameter of a D.C. electric arc welder for controlling a welding process wherein a welding wire is advanced toward a workpiece while an arc voltage is applied across the advancing wire and the workp...	07/11/2000
6069333	Method and system for welding railroad rails A method of gas shielded arc welding steel railroad rails spaced from each other to define a longitudinal gap comprises the steps of providing an elongated steel barrier plate across the gap at the bottom of the spaced rails, and filling gap above the bar...	05/30/2000
6055161	Switching type power supply for arc welding In a switching type power supply for use in an electric arc welder or plasma cutter, of the type having an output transformer with a primary winding in a series circuit DC source with a selected voltage and a switch, either single or tandem, with a conduc...	04/25/2000
6051810	Short circuit welder An apparatus and method of short circuit arc welding two spaced ends of two pipe sections at a groove between the two pipe sections. The method and apparatus include the use of a cored metal electrode and moving the electrode toward the groove as the elec...	04/18/2000
6036082	Welding station A robotic welder designed to efficiently weld a workpiece together which includes a three-sided structure to support a plurality of workpiece components, and an index and rotating mechanism designed to move the work support surfaces into a desired positio...	03/14/2000
6025573	Controller and method for pulse welding In a power supply for creating a voltage to cause a current pulse between a consumable electrode and a workpiece to melt the end of the electrode into a droplet and propel the droplet toward the workpiece, where the power supply has a plurality of pulse c...	02/15/2000
6023037	Electric ARC welder and plasma cutter A single phase power supply module for electric arc welders and plasma arc cutters comprising: a single phase input stage; positive and negative output terminals; a full wave rectifier connected to the input stage for rectifying the single phase voltage a...	02/08/2000
6019303	Method and apparatus for packing wire in a storage drum A method and apparatus for densely packing wire in a storage drum is provided. A capstan is provided for pulling welding wire at a set rotational velocity. The welding wire is then provided to a rotatable laying head which receives the wire from the capst...	02/01/2000
6015964	Electric arc welder with controlled arc In an electric arc welder for creating an electric arc for melting and depositing metal from an advancing welding wire onto a workpiece, said welder including a power supply having a switch operated by a pulse width modulator for creating a series of curr...	01/18/2000
6002104	Electric arc welder and controller therefor A microprocessor based controller with a JAVA virtual machine used to control a specific electric arc welder having a switching type power supply for creating a welding cycle with a real time current waveform constituting several control parameters by rap...	12/14/1999
5991169	Arc welding power supply A dual stage power supply for creating a D.C. welding current through an arc welding gap, the power supply comprising an input inverter stage with a full wave rectified A.C. voltage source and an output capacitor; and, an output chopper stage connected ac...	11/23/1999
5981906	Method of welding the ends of pipe together using dual welding wires A new system for welding sections of pipe together to form a long, continuous pipeline. A welding bug is mounted on a guide track which goes around the circumference of the pipe. The welding bug is provided with a wire feeder, a motor to drive the wire fe...	11/09/1999
5973291	Method and system for determining the feedability of welding wire A method and system of determining the feedability of a continuous welding wire having a known diameter, said method and system comprising the steps of providing a supply of welding wire; pushing the wire by a wire feeder through a welding cable having a ...	10/26/1999
5965040	Plasma arc torch A plasma torch comprises a tubular nozzle having an end wall and an electrode in the nozzle having a nose end facing the end wall. The nose end and end wall provide a plasma gas chamber, and the end wall has a gas chamber outlet opening extending axially ...	10/12/1999
5961863	Short circuit pipe welding An apparatus and method of short circuiting arc welding two spaced ends of two pipe sections at a groove between the two pipe sections. The method and apparatus include the use of a cored metal electrode and moving the electrode toward the groove as the e...	10/05/1999
5945014	Method of arc welding heavy steel plates A method of welding together two steel plates with a thickness greater than about 3/8 inches from one side of the plates, the method comprising the steps of: tapering a generally straight edge of the plates to form an included angle in the range of about ...	08/31/1999
5938949	Plasma arc torch A plasma arc torch comprises relatively displaceable electrode and nozzle components having first and second positions relative to one another in which the electrode respectively contacts the nozzle and is spaced an operating distance therefrom. Arrangeme...	08/17/1999

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Assignee: Lincoln Global, Inc.