Abstract: A welding-type power supply including a balanced plate rectifier to rectify high frequency alternating current from one or more transformers. The balanced plate rectifier includes an output terminal symmetrically connected to the plates of the plate rectifiers. The impedance between the output terminal and each plate is substantially equal.

Abstract: A welding system includes a wire drive assembly having feed rolls for feeding welding wire through a welding torch assembly. The welding system also includes a rear structure disposed at an upstream end of the welding torch assembly, a forward structure disposed at a downstream end of the welding torch assembly, and a continuous guide structure. The rear structure has a rear structure aperture through which the welding wire is received, the forward structure has a forward structure aperture through which the welding wire is output, and the continuous guide structure is disposed between and coupled to the rear structure aperture and the forward structure aperture. The rear structure aperture is aligned with a first axis, the forward structure aperture is aligned with a second axis, and the first and second axes are offset from each other.

Abstract: Motor assemblies and methods for a push-pull torch are disclosed. An example method includes: rotating a mechanical component about a first axis in a welding torch using a drive motor aligned with the first axis; and feeding a welding wire through the welding torch via a first feed roll and a second feed roll, wherein the first feed roll is operatively coupled with the mechanical component, the first and second feed rolls define a plane through which the welding wire passes, and the plane is generally parallel to and offset from the first axis.

Abstract: An induction heating system includes an induction heating head assembly configured to move relative to a workpiece. The induction heating system may also include a temperature sensor assembly configured to detect a temperature of the workpiece and/or a travel sensor assembly configured to detect a position, movement, or direction of movement of the induction heating head assembly relative to the workpiece, and to transmit feedback signals to a controller configured to adjust the power provided to the induction heating head assembly by a power source based at least in part on the feedback signals. In certain embodiments, the induction heating system may also include a connection box configured to receive the feedback signals, to perform certain conversions of the feedback signals, and to provide the feedback signals to the power source.

Abstract: A welding system includes a welding wire feeder, and the welding wire feeder includes a motor and an adjustable drive shaft assembly. The motor is and configured to rotate a feed roll with respect to the wire drive assembly housing. The adjustable drive shaft assembly is coupled to the motor and configured to couple with the feed roll. The adjustable drive shaft assembly includes a drive mechanism configured to urge rotation of the feed roll and to adjust a position of the feed roll relative to the wire drive assembly housing.

Abstract: An induction heating system includes an induction heating head assembly configured to move relative to a workpiece. The induction heating system may also include a temperature sensor assembly configured to detect a temperature of the workpiece and/or a travel sensor assembly configured to detect a position, movement, or direction of movement of the induction heating head assembly relative to the workpiece, and to transmit feedback signals to a controller configured to adjust the power provided to the induction heating head assembly by a power source based at least in part on the feedback signals. In certain embodiments, the induction heating system may also include a connection box configured to receive the feedback signals, to perform certain conversions of the feedback signals, and to provide the feedback signals to the power source.

Abstract: A welding system includes a welding torch assembly including a body, a first feed roll, a second feed roll, and a lever. The first and second feed rolls are both configured to rotate with respect to the body, and the first and second feed rolls are disposed opposite from one another about a welding wire feed region. The lever is configured to pivot at a first end of the lever about a lever joint of the body, and the second feed roll is movable between a first position and a second position in response to movement of a second end of the lever. The second feed roll is adjacent to the first feed roll in the first position, the second feed roll is not adjacent to the first feed roll in the second position, and the lever is configured to maintain the feed roll in the second position.

Abstract: A welding-type power supply including a balanced plate rectifier to rectify high frequency alternating current from one or more transformers. The balanced plate rectifier includes an output terminal symmetrically connected to the plates of the plate rectifiers. The impedance between the output terminal and each plate is substantially equal.

Abstract: A welding system includes a welding torch assembly including a body, a first feed roll, a second feed roll, and a lever. The first and second feed rolls are both configured to rotate with respect to the body, and the first and second feed rolls are disposed opposite from one another about a welding wire feed region. The lever is configured to pivot at a first end of the lever about a lever joint of the body, and the second feed roll is movable between a first position and a second position in response to movement of a second end of the lever. The second feed roll is adjacent to the first feed roll in the first position, the second feed roll is not adjacent to the first feed roll in the second position, and the lever is configured to maintain the feed roll in the second position.

Abstract: Motor assemblies and methods for a push-pull torch are disclosed. An example method includes: rotating a mechanical component about a first axis in a welding torch using a drive motor aligned with the first axis; and feeding a welding wire through the welding torch via a first feed roll and a second feed roll, wherein the first feed roll is operatively coupled with the mechanical component, the first and second feed rolls define a plane through which the welding wire passes, and the plane is generally parallel to and offset from the first axis.

Abstract: A welding system includes a wire drive assembly having feed rolls for feeding welding wire through a welding torch assembly. The welding system also includes a rear structure disposed at an upstream end of the welding torch assembly, a forward structure disposed at a downstream end of the welding torch assembly, and a continuous guide structure. The rear structure has a rear structure aperture through which the welding wire is received, the forward structure has a forward structure aperture through which the welding wire is output, and the continuous guide structure is disposed between and coupled to the rear structure aperture and the forward structure aperture. The rear structure aperture is aligned with a first axis, the forward structure aperture is aligned with a second axis, and the first and second axes are offset from each other.

Abstract: A welding system includes a welding torch assembly. The welding torch assembly includes a first feed roll configured to rotate about a first axis, a second feed roll disposed opposite the first feed roll about a welding wire feed region, a first helical gear coupled to the first feed roll, a second helical gear operatively coupled to the first helical gear, and a drive motor. The first helical gear is configured to rotate about the first axis, the second helical gear is configured to rotate about a second axis to rotate the first helical gear about the first axis, wherein the second axis is generally perpendicular to the first axis, and the drive motor is configured to rotate the second helical gear about the second axis. The second axis is offset from a plane defined by the welding wire feed region between the first and second feed rolls.

Abstract: A welding system includes a wire drive assembly having feed rolls for feeding welding wire through a welding torch assembly. The welding system also includes a rear structure disposed at an upstream end of the welding torch assembly, a forward structure disposed at a downstream end of the welding torch assembly, and a continuous guide structure. The rear structure has a rear structure aperture through which the welding wire is received, the forward structure has a forward structure aperture through which the welding wire is output, and the continuous guide structure is disposed between and coupled to the rear structure aperture and the forward structure aperture. The rear structure aperture is aligned with a first axis, the forward structure aperture is aligned with a second axis, and the first and second axes are offset from each other.

Abstract: A wire feeder includes a tensioner with a discrete number of compressive force settings for applying a desired compressive force to welding wire fed through the wire feeder is provided. The tensioner includes an adjustment knob with a discrete number of detents disposed along a helical surface adjacent an inner bore of the adjustment knob. The tensioner also includes a pin extending from an end of a tensioning post located in the inner bore, the pin being configured to align with the detents of the adjustment knob. Rotation of the adjustment knob adjusts alignment of the pin among the discrete number of detents, which correspond to the discrete number of compressive force settings.

Abstract: Protective assemblies for enclosures are described. An example apparatus includes a chassis configured to hold one or more electronic systems, a first frame configured to engage a first side of the chassis, a second frame configured to engage a second side of the chassis opposite the first side, and members attached between the first frame and the second frame using fasteners, the members extending between the first frame and the second frame to rigidly secure the first frame and the second frame against the chassis to create an enclosure comprising the first frame, the second frame, and the chassis, the members being exterior to the chassis.

Abstract: A welding torch has a torch handle. A wire drive assembly is disposed in the torch handle and includes a drive motor and a drive roller. The wire drive assembly contacts the welding wire and is configured to drive the welding wire from a wire feeder to a welding operation. In addition, the welding torch has a trigger and a wire feed speed adjustment assembly. The trigger is disposed near a rear end of the torch handle and is configured to be depressed by an operator for initiating feed of the welding wire. The adjustment assembly is positioned near the rear end of the handle adjacent to the trigger and on the same side of the handle as the trigger. The adjustment assembly allows operator adjustment of a feed speed of the welding wire.