Electric heating – Metal heating – By arc
Reexamination Certificate
2011-06-28
2011-06-28
Yuen, Henry (Department: 3742)
Electric heating
Metal heating
By arc
C219S130100, C219S130210, C315S224000, C315S294000, C323S207000, C323S271000, C323S272000, C363S021020, C363S021140
Reexamination Certificate
active
07968822
ABSTRACT:
An electric arc welding system including a power lead for providing welding current between an advancing welding wire and a workpiece, a short circuit sensor having a short circuit output signal when the electrode is shorted with the workpiece and a premonition sensor having a fuse output signal when a short circuit is about to break. This welding system has at least two power source modules, each with a common isolated DC input and an output connected to the power lead with each of the modules controlled to perform a short circuit arc welding process. The individual module comprises a regulated DC to DC converter having a DC output signal with a waveform controlled by a waveform signal from a controller and an output switch receiving the DC output signal and in series with the power lead where the output switch is opened by a gate signal to reduce the welding current in the power lead.
REFERENCES:
patent: 4717807 (1988-01-01), Parks
patent: 5003154 (1991-03-01), Parks
patent: 5148001 (1992-09-01), Stava
patent: 5406051 (1995-04-01), Lai
patent: 5786992 (1998-07-01), Vinciarelli et al.
patent: 6160241 (2000-12-01), Stava
patent: 6215100 (2001-04-01), Stava
patent: 6291798 (2001-09-01), Stava
patent: 6343026 (2002-01-01), Perry
patent: 6365874 (2002-04-01), Stava
patent: 6441342 (2002-08-01), Hsu
patent: 6472634 (2002-10-01), Houston
patent: 6501049 (2002-12-01), Stava
patent: 6504132 (2003-01-01), Church
patent: 6600134 (2003-07-01), Stava
patent: 6847008 (2005-01-01), Myers
Dang Ket D
Hahn Loeser & Parks LLP
Lincoln Global Inc.
Yuen Henry
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