Lincoln Global, Inc.

Ed Enyedy

Brian Meess

Jeff Kachline

Grant Sadowski

Wayne Gregg

A welding diffuser and contact tip assembly is provided for use with a welding apparatus. The assembly includes a diffuser with an interior chamber and a plurality of openings defining exit passages from the interior chamber to an exterior of the diffuser, and a contact tip coupled to the diffuser. The contact tip includes a front portion, a rear portion, and a contact tip bore extending therethrough configured to receive electrode wire. A diffuser insert is disposed within the interior chamber of the diffuser, including an insert bore extending therethrough configured to receive electrode wire, and an angled outer surface configured to direct debris from within the interior chamber of the diffuser towards exit passages to thereby discharge the debris to an exterior of the diffuser. In one example, the rear portion of the contact tip includes an angled outer surface defining the diffuser insert.

Welding diffuser with debris removal

A welding gun includes a handle portion comprising a motor configured to move electrode wire through the welding gun. A diffuser comprises an interior chamber and a plurality of openings defining exit passages from the interior chamber to an exterior of the diffuser. A barrel is located between the diffuser and the handle portion and supplies to the diffuser from the handle portion. A contact tip extends from the diffuser and comprises a front portion, a rear portion, and a contact tip bore extending therethrough configured to receive the electrode wire. A diffuser insert is disposed within the interior chamber of the diffuser, including an insert bore extending therethrough configured to receive electrode wire, and an outer surface configured to direct debris from within the interior chamber of the diffuser towards exit passages to discharge the debris. The handle portion is configured to direct a flow of the shielding gas over the motor to cool the motor.

Welding gun with debris removal and motor cooling

An apparatus is provided which is a wire feeder for a welding operation having two or more wire driving devices and a switching device which directs the welding current to the appropriate wire driving device for a welding operation.

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Eastlake, OH, United States of America

Ed Enyedy