Electric heating – Metal heating – By arc
Reexamination Certificate
2005-08-02
2005-08-02
Kerns, Kevin P. (Department: 1725)
Electric heating
Metal heating
By arc
Reexamination Certificate
active
06924461
ABSTRACT:
A gas diffuser for a welding gun in which atmospheric air in the interior of the liner is substantially prevented from entering the contact tip hole. The gas diffuser includes a cradle having a hole and a section of a concave surface disposed around a periphery of the hole, and an outer peripheral body having a first axial bore on one side of the cradle and a second axial bore on the other side of the cradle. The outer peripheral body includes one or more generally axial slots, each slot having one end that opens into the first axial bore and another end that opens into the second axial bore. Each slot is open to the exterior of the diffuser along its length and is disposed radially outward of the cradle. The first and second axial bores communicate via the hole in the cradle and via the slots.
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U.S. Appl. No. 10/215,804, filed Aug. 9, 2002, Giese.
Illinois Tool Works Inc.
Kerns Kevin P.
Ostrager Chong Flaherty & Broitman P,C
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