Illinois Tool Works Inc.

Romeo N Cossette

Tiejun Ma

Jeffrey G Wells

Richard Martin Hutchison

Paul William Garvey

Chris John Roehl

Craig Matthew Bondy

Jeffery K Arcand

Craig M Bondy

Ryan Lizotte

Paul W Garvey

Chris Roehl

An adjustable cable fitting for a thru-arm cable of a robotic welding torch includes a female member formed of an elongated tubular body having a forward end, a rear end, and a through hole extending axially from the forward end to the rear end. The forward end includes a nose portion for connection to a welding cable. A male member is cooperable with the female member in a telescoping manner. The male member includes a shaft received in the through hole of the female member, a receiver connected to the shaft for receiving a power pin, and a through hole extending axially through the shaft and receiver. A nut is disposed on the shaft for locking a position of the shaft relative to the female member. Adjustment of a disposition of the male member relative to the female member varies an effective length of the power cable.

Adjustable length robotic cable fitting

The welding contact tips presented herein include contoured inner bores that include a front inner bore section and a back inner bore section. In certain embodiments, the front inner bore section is approximately 0.3-0.6 inches long and includes an inner wall having a substantially constant inner diameter. The back inner bore section is configured to conform to the specific welding wire used with the welding contact tip. In particular, the back inner bore section includes an inner wall having an inner diameter that is substantially larger at an axial end of the welding contact tip than at an axial transition location where the front and back inner bore sections abut. As such, the welding contact area between the welding contact tip and the welding wire is enhanced in the front inner bore section, especially when the welding wire twists inside the contact tip and the welding torch.

Contact tip with contoured bore

A jump liner for a push-pull MIG welding torch includes an elongated tubular body having front and back ends. The tubular body is made of a flexible plastic material. A front adapter is disposed at the front end of the tubular body. The front adapter is fittable in a retaining head of the torch. A back adapter is disposed at the back end of the tubular body. The back adapter is fittable in a gooseneck or body block of the welding torch. The front adapter provides sealing between the jump liner and the retaining head to prevent back flow leakage of shielding gas, and the front adapter prevents deformation of the tubular body at elevated temperatures. The back adapter provides sealing between the jump liner and the gooseneck or body block.

Jump liner for push-pull MIG torch

A drive roll assembly is disclosed for a push-pull MIG welding torch including a handle connected to a power cable assembly at one end, and a gooseneck-contact tip assembly at the other end. The drive roll assembly includes a body block disposed in the handle, a motorized driving gear mounted on the body block, and an idler wheel rotatably mounted on a mounting arm via a mount. The mounting arm is pivotally connected to the body block. The idler wheel is cooperable with the driving gear to pull welding wire from the cable assembly through the handle and towards the gooseneck. One of the idler wheel and the driving gear is made of a highly conductive material that allows for transfer of welding current to the welding wire, providing a secondary current transfer channel in addition to the conductive contact tip. The electric resistance from the body block to the surfaces of the idler wheel and driving gear at which they contact welding wire is below 15 milli-ohms, preferably below 2.0 milli-ohms.

High conductive drive roll assembly for push-pull MIG torch

A dispenser for drum packed welding wire comprised of numerous coils includes a circular lid having an upper surface and a lower surface. The lower surface is floatingly positionable on top of the packed welding wire. A frame extends from the upper surface. The frame includes a hub and a radially extending support extending from the hub to the upper surface. The hub includes an aperture. The dispenser also includes a de-coil conduit having inlet and outlet ends for guiding welding wire therethrough. The inlet end and outlet end are generally at 90&#xb0; to one another. The inlet end is disposed to receive welding wire in the drum parallel to the coils, and the inlet end is moveable relative to the circular lid as the wire is fed into the de-coil conduit. The outlet end directs the fed welding wire to the aperture in the hub.

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Windsor, CA, United States of America

Romeo N Cossette