Electric heating – Metal heating – Nonatmospheric environment at hot spot
Reexamination Certificate
2003-10-06
2008-11-18
Kerns, Kevin P (Department: 1793)
Electric heating
Metal heating
Nonatmospheric environment at hot spot
C219S137510, C219S137620, C219S137900
Reexamination Certificate
active
07453050
ABSTRACT:
A welding implement includes a torch having a flexible torch head. The torch head is operable to conduct electricity to a welding electrode disposed within the torch head. The welding implement may include a gas supply tube and a coiled wire spring operable to flexibly couple the gas supply tube to the torch head. The welding implement may include a torch that directs a fluid to flow axially through a spring coupled the torch head. The welding implement may also include a torch including a torch head and a tripod support system to flexibly support the torch head. Each of the legs of the tripod support system may include a spring.
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patent: 3281571 (1966-10-01), Gilmore
patent: 3703622 (1972-11-01), Kleppen, Jr.
patent: 3992565 (1976-11-01), Gatfield
patent: 3999033 (1976-12-01), Willgohs et al.
patent: 4145595 (1979-03-01), Keller et al.
patent: 5166496 (1992-11-01), Sarkissian
patent: 5403987 (1995-04-01), Rehrig
patent: 6855905 (2005-02-01), Delgado et al.
Fletcher Yoder
Illinois Tool Works Inc.
Kerns Kevin P
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