Electric heating – Metal heating – By arc
Reexamination Certificate
2005-03-15
2009-02-24
Hoang, Tu B (Department: 3742)
Electric heating
Metal heating
By arc
C219S130510, C219S13700R, C219S1370PS, C219S054000, C219S060200, C219S061000, C219S06000A
Reexamination Certificate
active
07495193
ABSTRACT:
Welders and methods are presented for short-circuit arc welding a workpiece using a modified series arc welding configuration with two electrodes via a sequence of welding cycles, in which each cycle includes an arc condition a short-circuit condition, wherein one or both electrode currents are selectively reversed during a reverse boost portion of the welding cycle to transfer molten metal from the second electrode to the first electrode prior to a short-circuit condition of a subsequent welding cycle.
REFERENCES:
patent: 2669640 (1954-02-01), Outcalt et al.
patent: 2938107 (1960-05-01), Pease
patent: 3223818 (1965-12-01), Chyle
patent: 3456089 (1969-07-01), Shrubsall
patent: 3517156 (1970-06-01), Arnoldy
patent: 4088866 (1978-05-01), Lund et al.
patent: 4246463 (1981-01-01), Shutt et al.
patent: 4546234 (1985-10-01), Ogasawara et al.
patent: 4717807 (1988-01-01), Parks et al.
patent: 4954691 (1990-09-01), Parks et al.
patent: 4972064 (1990-11-01), Stava
patent: 5001326 (1991-03-01), Stava
patent: 5003154 (1991-03-01), Parks et al.
patent: 5148001 (1992-09-01), Stava
patent: 5278390 (1994-01-01), Blankenship
patent: 5676857 (1997-10-01), Parker
patent: 5683602 (1997-11-01), Stava
patent: 5715150 (1998-02-01), Stava
patent: 5742029 (1998-04-01), Stava et al.
patent: 5864116 (1999-01-01), Baker
patent: 6025573 (2000-02-01), Stava
patent: 6111216 (2000-08-01), Stava
patent: 6160241 (2000-12-01), Stava et al.
patent: 6172333 (2001-01-01), Stava
patent: 6204478 (2001-03-01), Nicholson et al.
patent: 6207929 (2001-03-01), Stava et al.
patent: 6215100 (2001-04-01), Stava
patent: 6274845 (2001-08-01), Stava et al.
patent: 6291798 (2001-09-01), Stava
patent: 6365874 (2002-04-01), Stava
patent: 6472634 (2002-10-01), Houston et al.
patent: 6489592 (2002-12-01), Stava et al.
patent: 6501049 (2002-12-01), Stava
patent: 6570131 (2003-05-01), Stava
patent: 6600134 (2003-07-01), Stava
patent: 6660966 (2003-12-01), Houston et al.
patent: 6849827 (2005-02-01), Thommes
patent: 2003/0006222 (2003-01-01), Houston et al.
patent: 2004/0050833 (2004-03-01), Stava et al.
Lincoln Electric, Another Arc Welding Development “The Lincoln One Side System”.
AC-1200, Automatic Submerged Arc Welding Power Source, Lincoln Electric.
Myers Russ K.
O'Donnell Timothy M.
Rosiek Timothy P.
Fay Sharpe LLP
Hoang Tu B
Lincoln Global Inc.
Ralis Stephen J
LandOfFree
Pipe seam tack welding methods and apparatus using modified... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe seam tack welding methods and apparatus using modified..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe seam tack welding methods and apparatus using modified... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4069406