Electric heating – Metal heating – By arc
Reexamination Certificate
2007-11-13
2007-11-13
Kerns, Kevin P. (Department: 1725)
Electric heating
Metal heating
By arc
C219S137630
Reexamination Certificate
active
10278319
ABSTRACT:
A welding system having a welding implement. The welding implement having a neck, a handle and a retaining nut for securing the neck to the handle. The neck being operable to convey electrode wire therethrough. The retaining nut being adapted for wrench-tightening to a threaded portion of the welding implement. An optional retaining nut operator. The optional retaining nut operator being adapted to secure to the retaining nut. The optional retaining nut operator being adapted for manual rotation to thread the retaining nut to the threaded portion of the welding implement. The optional retaining nut operator may be adapted to snap-fit onto the retaining nut. The optional retaining nut operator may include an electrically insulating material. The electrically insulating material may include a polymer.
REFERENCES:
patent: 5350266 (1994-09-01), Espey et al.
patent: 5384447 (1995-01-01), Raloff et al.
patent: RE36997 (2000-12-01), Kensrue
patent: 6649871 (2003-11-01), Wakeman
patent: 6713711 (2004-03-01), Conway et al.
patent: 6720528 (2004-04-01), Matiash et al.
Fletcher Yoder
Illinois Tool Works Inc.
Kerns Kevin P.
LandOfFree
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