Steven R Peters

US Patent:

6489592, Dec 3, 2002

Filed:

Dec 6, 2000

Appl. No.:

09/730937

Inventors:

Elliott K. Stava - Sagamore Hills OH
Steven R. Peters - Huntsburg OH

Assignee:

Lincoln Global, Inc. - Monterey Park CA

International Classification:

B23K 909

US Classification:

21913051, 219137 PS

Abstract:

An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding current at a first low frequency between the first electrode and the two plates, a second power supply for passing a second welding current at a second low frequency between the second electrode and the two plates, where each of the power supplies includes a three phase voltage input operated at line frequency, a rectifier to convert the input voltage to a DC voltage link and a high frequency switching type inverter converting the DC voltage link to a high frequency AC current, an output rectifier circuit to provide a positive voltage terminal and a negative voltage terminal, and an output switching network operated at a given low frequency for directing a pulsating welding current at the given low frequency from the two terminals across one of the electrodes and the plates, and a circuit for independently adjusting the given low frequency so the value of the first low frequency of the first power supply is different from the second low frequency of the second power supply.

US Patent:

6498321, Dec 24, 2002

Filed:

Apr 9, 2001

Appl. No.:

09/828090

Inventors:

Bruce E. Fulmer - Mentor OH
Steven R. Peters - Huntsburg OH

Assignee:

Lincoln Global, Inc. - Monterey Park CA

International Classification:

B23K 910

US Classification:

21913033, 219137 PS, 21913771

Abstract:

A control system for an electric arc welder performing a welding process between an electrode and a workpiece, which system comprises: a high speed switching type power supply with a controller operated at a switching frequency of at least about 10 kHz with an input current control signal to adjust the output current of the power supply; a first sensor sensing the actual arc voltage; a second sensor sensing the actual arc current; a first circuit for creating a power signal representing the desired real time power level at progressive times during the welding process; a second circuit for creating a function of the sensed actual voltage and the sensed actual current; and a third circuit for adjusting the current control signal in accordance with the difference between the power signal and the function of the actual voltage and current, preferably arc power.

US Patent:

6515259, Feb 4, 2003

Filed:

May 29, 2001

Appl. No.:

09/866358

Inventors:

Christopher Hsu - Mentor OH
Bruce E. Fulmer - Mentor OH
Steven R. Peters - Huntsburg OH

Assignee:

Lincoln Global, Inc. - Monterey Park CA

International Classification:

B23K 909

US Classification:

21913051, 21913031, 2191305, 219137 PS

Abstract:

An electric arc welder including a high speed switching power supply with a controller for creating high frequency current pulses through the gap between a workpiece and a welding wire advancing toward the workpiece, where the pulses and a background current defining a series of weld cycles. A wave shape generator defines the shape of the pulses and the background current including a controlled ramp up and/or ramp down in each of said cycles and a circuit to change the shapes of the pulses and/or background current in a repeating pattern in each of the weld cycles. The shape change in a cycle can be between first and second shapes or by a rhythmic AC modulation.

US Patent:

6683278, Jan 27, 2004

Filed:

Aug 21, 2002

Appl. No.:

10/225514

Inventors:

Elliott K. Stava - Sagamore Hills OH
Steven R. Peters - Huntsburg OH

Assignee:

Lincoln Global, Inc. - Monterey Park CA

International Classification:

B23K 909

US Classification:

219137PS, 21913051

Abstract:

An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding current at a first low frequency between the first electrode and the two plates, a second power supply for passing a second welding current at a second low frequency between the second electrode and the two plates, where each of the power supplies includes a three phase voltage input operated at line frequency, a rectifier to convert the input voltage to a DC voltage link and a high frequency switching type inverter converting the DC voltage link to a high frequency AC current, an output rectifier circuit to provide a positive voltage terminal and a negative voltage terminal, and an output switching network operated at a given low frequency for directing a pulsating welding current at the given low frequency from the two terminals across one of the electrodes and the plates, and a circuit for independently adjusting the given low frequency so the value of the first low frequency of the first power supply is different from the second low frequency of the second power supply.

US Patent:

6700097, Mar 2, 2004

Filed:

Sep 28, 2001

Appl. No.:

09/965327

Inventors:

Christopher Hsu - Mentor OH
Steven R. Peters - Huntsburg OH

Assignee:

Lincoln Global, Inc. - Monterey Park CA

International Classification:

B23K 910

US Classification:

2191305, 21913051

Abstract:

An electric arc welder for creating a welding cycle with a real time current waveform constituting several control parameters by a microprocessor that controls a power supply by a signal so the output of the power supply traces a desired waveform and dynamic reaction behavior to arc conditions defined by the control parameters. The welder has a controller for creating the signal and reading the parameters, a graphic user interface program controlled by input from a graphic user interface computer, a system with a first interface for an interactive display for displaying the desired waveform and dynamic behavior and at least one manipulative control parameter, a second interface for a manual data entry device to change the waveform and/or the parameters and a digital communication link from the graphic user interface to the welder microprocessor controller for causing the welder to perform the desired waveform by controlling the signal. A number of script language files each defining a given type of waveform logic and containing a user manipulative variable table of control parameters and graphical descriptive language to display a waveform to be implemented by the welder is used with an input stage for processing a selected one of the script files into graphic user interface components (readouts, charts, and/or panels) for operating the welder.

US Patent:

7022942, Apr 4, 2006

Filed:

Aug 28, 2003

Appl. No.:

10/650626

Inventors:

Elliott K. Stava - Sagamore Hills OH, US
Steven R. Peters - Huntsburg OH, US

Assignee:

Lincoln Global, Inc. - Cleveland OH

International Classification:

B23K 9/09

US Classification:

219137PS, 21913051

Abstract:

An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding current at a first low frequency between the first electrode and the two plates, a second power supply for passing a second welding current at a second low frequency between the second electrode and the two plates, where each of the power supplies includes a three phase voltage input operated at line frequency, a rectifier to convert the input voltage to a DC voltage link and a high frequency switching type inverter converting the DC voltage link to a high frequency AC current, an output rectifier circuit to provide a positive voltage terminal and a negative voltage terminal, and an output switching network operated at a given low frequency for directing a pulsating welding current at the given low frequency from the two terminals across one of the electrodes and the plates, and a circuit for independently adjusting the given low frequency so the value of the first low frequency of the first power supply is different from the second low frequency of the second power supply.

US Patent:

7166818, Jan 23, 2007

Filed:

Sep 29, 2004

Appl. No.:

11/218395

Inventors:

Elliott K. Stava - Sagamore Hills OH, US
Steven R. Peters - Huntsburg OH, US

Assignee:

Lincoln Global, Inc. - City of Industry CA

International Classification:

B23K 9/09

US Classification:

219137PS, 21913051

Abstract:

An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding current at a first low frequency between the first electrode and the two plates, a second power supply for passing a second welding current at a second low frequency between the second electrode and the two plates, where each of the power supplies includes a three phase voltage input operated at line frequency, a rectifier to convert the input voltage to a DC voltage link and a high frequency switching type inverter converting the DC voltage link to a high frequency AC current, an output rectifier circuit to provide a positive voltage terminal and a negative voltage terminal, and an output switching network operated at a given low frequency for directing a pulsating welding current at the given low frequency from the two terminals across one of the electrodes and the plates, and a circuit for independently adjusting the given low frequency so the value of the first low frequency of the first power supply is different from the second low frequency of the second power supply.

US Patent:

7173214, Feb 6, 2007

Filed:

Apr 1, 2004

Appl. No.:

10/815078

Inventors:

Jeffrey T. Nadzam - Westlake OH, US
Steven R. Peters - Huntsburg OH, US

Assignee:

Lincoln Global, Inc. - Monterey Park CA

International Classification:

B23K 9/09

US Classification:

21913051, 21913021

Abstract:

An electric arc welder with a waveform generator controlled to create a welding process involving current flow between an electrode and a workpiece wherein the welding process comprises a succession of pulse waveforms, each having a current ramp up portion, a peak current portion, a current ramp down portion and a background current portion, a voltage sensing circuit to sense a short circuit between the electrode and the workpiece and a reset circuit to reset the waveform generator upon sensing of a short circuit. The preferred electrode is a solid wire which may be in the form of a metal cored wire.