Electric heating – Metal heating – By arc
Reexamination Certificate
2011-07-12
2011-07-12
Ralis, Stephen J (Department: 3742)
Electric heating
Metal heating
By arc
C219S137700, C219S137630, C226S181000, C226S182000, C226S185000, C226S190000
Reexamination Certificate
active
07977604
ABSTRACT:
A drive roll for advancing a wire is provided. In certain embodiments, the drive roll includes a body having a wire feed portion, a mounting portion, and a central aperture through the body. In one embodiment, the feed portion includes an outer circumferential surface of the drive roll and a plurality of grooves for receiving and advancing various wires, while the mounting portion includes mounting features that are each uniquely associated with only one of the grooves. Various wire feed systems and welding systems are also provided.
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patent: 44 20 706 (1995-12-01), None
patent: 1 584 401 (2005-10-01), None
Fletcher Yoder P.C.
Illinois Tool Works Inc.
Maye Ayub
Ralis Stephen J
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