Electric heating – Metal heating – Nonatmospheric environment at hot spot
Reexamination Certificate
2005-02-15
2005-02-15
Stoner, Kiley S. (Department: 1725)
Electric heating
Metal heating
Nonatmospheric environment at hot spot
C219S137310, C219S137510
Reexamination Certificate
active
06855905
ABSTRACT:
A positionable welding torch for a welding system is featured. The torch comprises a torch head, a handle, and a flexible portion coupled to the torch head and the handle. The flexible portion is adapted to enable the torch head to be positioned relative to the handle. The flexible portion has a first end, a second end, and a rigid restraining member adapted to cooperate with the first and second ends to limit the relative displacement of the first and second ends. The restraining member may comprise a restraining portion adapted to abut one of the first and second end portions. The restraining member also may comprise a biasing portion adapted to bias the restraining portion into engagement with one of the first and second end portions. A method for assembling a welding torch having a restraining member also is featured.
REFERENCES:
patent: 3402741 (1968-09-01), Yurdin
patent: 3703622 (1972-11-01), Kleppen, Jr.
patent: 3739770 (1973-06-01), Mori
patent: 3909585 (1975-09-01), Sanders et al.
patent: 4145595 (1979-03-01), Keller et al.
patent: 5166496 (1992-11-01), Sarkissian
Delgado David
Stecher Fred
Fletcher Yoder
Illinois Tool Works Inc.
Tran Len
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