Electric heating – Metal heating – Nonatmospheric environment at hot spot
Reexamination Certificate
2007-04-24
2007-04-24
Shaw, Clifford C. (Department: 1725)
Electric heating
Metal heating
Nonatmospheric environment at hot spot
C219S1370WM
Reexamination Certificate
active
10810847
ABSTRACT:
A welding shield gas comprising an inert gas and nitrogen gas, where the concentration of the nitrogen gas is 1 to 95 vol %; or comprising an inert gas and a helium gas, where the concentration of the helium gas is 35 to 95 vol %; or comprising an inert gas, nitrogen gas, and a helium gas, wherein the concentration of the nitrogen gas is not less than 1 vol % and less than 65 vol % and the concentration of the helium gas is 35 to 95 vol %. This shield gas can be used in the non-consumable electrode arc welding of a welded material consisting of stainless steel.
REFERENCES:
patent: 2939942 (1960-06-01), Scheil
patent: 3066215 (1962-11-01), Espy
patent: 3770932 (1973-11-01), Cotter et al.
patent: 4903888 (1990-02-01), Clark et al.
patent: 5306358 (1994-04-01), Lai et al.
patent: 5440090 (1995-08-01), Davis et al.
patent: 5739503 (1998-04-01), Rouault et al.
patent: 6111219 (2000-08-01), Macedo et al.
patent: 6274084 (2001-08-01), Haudrechy
patent: 133538 (1979-01-01), None
patent: 7-197203 (1995-08-01), None
patent: 7-299586 (1995-11-01), None
patent: 2000-197971 (2000-07-01), None
patent: 2001-74712 (2001-03-01), None
patent: 2002-220618 (2002-08-01), None
Lambert, “Cast-to-Cast Variability in Stainless Steel Merchanized GTA Welds”, Welding Journal, American Wedding Society, vol. 70, No. 5, May 1, 1991, pp. 41-52; XP000205593.
Du Toit et al, “Nitrogen Control During Autogenous Arc Wedding of Stainless Steel—Part 1: Experimental Observations”, Welding Journal, American Wedding Society, vol. 82, No. 8, Aug. 2003, pp. 219-S; XP001177375.
Welding Handbook, vol. 2, 7thedition, 1978, American Welding Society, The Macmillan Press Ltd., p. 132.
Igarashi Yuuji
Kimura Yutaka
Shaw Clifford C.
Taiyo Nippon Sanso Corporation
LandOfFree
Welding shield gas and welding method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Welding shield gas and welding method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Welding shield gas and welding method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3723544