Patents by Inventor Geoffrey H. Putnam
Geoffrey H. Putnam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230249277Abstract: A method, apparatus, and computer program product are provided for plasma piercing a workpiece using a plasma cutting torch. According to one implementation the method includes providing the plasma cutting torch at a first pierce height above a workpiece to initiate a piercing operation at the first pierce height for a first duration, during the piercing operation, lowering the plasma cutting torch to a second pierce height above the workpiece for a second duration, and lowering the plasma cutting torch to a cut height.Type: ApplicationFiled: February 9, 2022Publication date: August 10, 2023Inventors: Geoffrey H. Putnam, Christopher Vincent Braudis, SR.
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Publication number: 20230247752Abstract: A method for using a plasma torch includes delivering a plasma gas through a plasma gas flow channel of a plasma torch while ionizing the plasma gas to produce a plasma arc that extends between the electrode and the workpiece. Additionally, shield fluid is delivered through a shield flow channel at a first pressure. A piercing operation to produce a pierce hole in the workpiece using the plasma arc is initiated while the shield fluid is delivered through the shield flow channel at the first pressure. After conducting the piercing operation for an amount of time, the shield fluid is delivered to the shield flow channel at a second pressure that is higher than the first pressure. Subsequent to the piercing operation, performing a cutting operation that forms a cut in the workpiece that originates at and extends away from a boundary of the pierce hole.Type: ApplicationFiled: February 1, 2022Publication date: August 3, 2023Inventors: Geoffrey H. Putnam, Christopher Vincent Braudis, SR., Ryan Lynaugh
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Patent number: 10616988Abstract: Approaches herein provide a plasma arc torch including a tip surrounding an electrode, the electrode having a proximal end and a distal end, and a shield surrounding the tip, the shield including an exit orifice proximate the distal end of the electrode. The torch may further include a linear actuating device coupled to the electrode for actuating the electrode such that the distal end of the electrode moves axially relative to the tip and the exit orifice of the shield. In some approaches, the linear actuating device is operable to actuate the electrode along a central longitudinal axis extending through the tip. In some approaches, the linear actuating device may include one of: a micro linear drive motor, a micro linear stepper motor, a voice coil, a solenoid coil, and a magnetostrictive actuator. In some approaches, the electrode is actuated during a welding or cutting cycle of the torch.Type: GrantFiled: June 20, 2017Date of Patent: April 7, 2020Assignee: The ESAB Group Inc.Inventors: Andrew Raymond, David A. Tatham, Leonid Pekker, Daniel A. Cote, Geoffrey H. Putnam, Ryan Lynaugh
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Patent number: 10307854Abstract: A system and method for generating a weld are provided. The system receives a selection of a magnitude of a voltage. The system selects a first weld control algorithm when the magnitude of the voltage is in a first range of values. The system may also select a second weld control algorithm when the magnitude of the voltage is in a second range of values. The system may generate welding output power based on the first and second weld control algorithms.Type: GrantFiled: January 11, 2018Date of Patent: June 4, 2019Assignee: Victor Equipment CompanyInventors: Roger H. Lambert, Geoffrey H. Putnam
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Publication number: 20180368246Abstract: Approaches herein provide a plasma arc torch including a tip surrounding an electrode, the electrode having a proximal end and a distal end, and a shield surrounding the tip, the shield including an exit orifice proximate the distal end of the electrode. The torch may further include a linear actuating device coupled to the electrode for actuating the electrode such that the distal end of the electrode moves axially relative to the tip and the exit orifice of the shield. In some approaches, the linear actuating device is operable to actuate the electrode along a central longitudinal axis extending through the tip. In some approaches, the linear actuating device may include one of: a micro linear drive motor, a micro linear stepper motor, a voice coil, a solenoid coil, and a magnetostrictive actuator. In some approaches, the electrode is actuated during a welding or cutting cycle of the torch.Type: ApplicationFiled: June 20, 2017Publication date: December 20, 2018Inventors: Andrew Raymond, David A. Tatham, Leonid Pekker, Daniel A. Cote, Geoffrey H. Putnam, Ryan Lynaugh
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Patent number: 10137520Abstract: Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.Type: GrantFiled: December 13, 2017Date of Patent: November 27, 2018Assignee: Thermal Dynamics CorporationInventors: Roger H. Lambert, Geoffrey H. Putnam
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Publication number: 20180193940Abstract: A system and method for generating a weld are provided. The system receives a selection of a magnitude of a voltage. The system selects a first weld control algorithm when the magnitude of the voltage is in a first range of values. The system may also select a second weld control algorithm when the magnitude of the voltage is in a second range of values. The system may generate welding output power based on the first and second weld control algorithms.Type: ApplicationFiled: January 11, 2018Publication date: July 12, 2018Inventors: Roger H. Lambert, Geoffrey H. Putnam
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Publication number: 20180111215Abstract: Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.Type: ApplicationFiled: December 13, 2017Publication date: April 26, 2018Inventors: Roger H. Lambert, Geoffrey H. Putnam
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Patent number: 9943923Abstract: Systems and methods for providing an improved start in a welding are provided. The system may include a power circuit and a control circuit: The power circuit may generate welding output power for a welding process. The control circuit may control the start of the welding process, for example, by generating a current pulse.Type: GrantFiled: May 25, 2012Date of Patent: April 17, 2018Assignee: Victor Equipment CompanyInventors: Roger H. Lambert, Geoffrey H. Putnam
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Patent number: 9889517Abstract: A system and method for generating a weld are provided. The system receives a selection of a magnitude of a voltage. The system selects a first weld control algorithm when the magnitude of the voltage is in a first range of values. The system may also select a second weld control algorithm when the magnitude of the voltage is in a second range of values. The system may generate welding output power based on the first and second weld control algorithms.Type: GrantFiled: May 25, 2012Date of Patent: February 13, 2018Assignee: Victor Equipment CompanyInventors: Roger H. Lambert, Geoffrey H. Putnam
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Patent number: 9868171Abstract: Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.Type: GrantFiled: May 25, 2012Date of Patent: January 16, 2018Assignee: Victor Equipment CompanyInventors: Roger H. Lambert, Geoffrey H. Putnam
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Patent number: 9314866Abstract: A system and method is provided for calculating a power output and coordinating the reduction of voltage and wire speed. Specifically, provided is a power circuit for generating welding output power, and a control circuit in communication with the power circuit to modify voltage and wire feed speed based on the calculated welding output power.Type: GrantFiled: May 25, 2012Date of Patent: April 19, 2016Assignee: Victor Equipment CompanyInventors: Roger H. Lambert, Geoffrey H. Putnam
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Patent number: 9101999Abstract: A system and a method are provided for improved run-in control during a start of a welding process. A power circuit generates welding output power. A control circuit in communication with the power circuit controls the output power. The control circuit receives a selection of a wire feed speed setting representing a wire feed speed. The control circuit receives a selection of a run-in setting representing a run-in percentage of the wire feed speed. The control circuit determines an effective run-in percentage that is equal to the run-in percentage plus an extra percentage.Type: GrantFiled: October 12, 2012Date of Patent: August 11, 2015Assignee: Victor Equipment CompanyInventors: Roger H. Lambert, Geoffrey H. Putnam, Kevin Horner-Richardson
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Publication number: 20130092673Abstract: A system and a method are provided for improved run-in control during a start of a welding process. A power circuit generates welding output power. A control circuit in communication with the power circuit controls the output power. The control circuit receives a selection of a wire feed speed setting representing a wire feed speed. The control circuit receives a selection of a run-in setting representing a run-in percentage of the wire feed speed. The control circuit determines an effective run-in percentage that is equal to the run-in percentage plus an extra percentage.Type: ApplicationFiled: October 12, 2012Publication date: April 18, 2013Inventors: Roger H. Lambert, Geoffrey H. Putnam, Kevin Horner-Richardson
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Publication number: 20120298642Abstract: Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.Type: ApplicationFiled: May 25, 2012Publication date: November 29, 2012Applicant: Thermal Dynamics CorporationInventors: Roger H. Lambert, Geoffrey H. Putnam
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Publication number: 20120303175Abstract: A system and method is provided for calculating a power output and coordinating the reduction of voltage and wire speed; if the computed power output does exceed the power supply capacity.Type: ApplicationFiled: May 25, 2012Publication date: November 29, 2012Applicant: Thermal Dynamics CorporationInventors: Roger H. Lambert, Geoffrey H. Putnam
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Publication number: 20120298641Abstract: Systems and methods for providing an improved start in a welding are provided. The system may include a power circuit and a control circuit: The power circuit may generate welding output power for a welding process. The control circuit may control the start of the welding process, for example, by generating a current pulse.Type: ApplicationFiled: May 25, 2012Publication date: November 29, 2012Applicant: Thermal Dynamics CorporationInventors: Roger H. Lambert, Geoffrey H. Putnam
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Publication number: 20120298643Abstract: A system and method for generating a weld are provided. The system receives a selection of a magnitude of a voltage. The system selects a first weld control algorithm when the magnitude of the voltage is in a first range of values. The system may also select a second weld control algorithm when the magnitude of the voltage is in a second range of values. The system may generate welding output power based on the first and second weld control algorithms.Type: ApplicationFiled: May 25, 2012Publication date: November 29, 2012Applicant: Thermal Dynamics CorporationInventors: Roger H. Lambert, Geoffrey H. Putnam
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Patent number: 6337460Abstract: A plasma arc torch and method for cutting a workpiece in which the torch has a primary gas flow path for receiving a primary working gas and directing it through the torch to a central exit opening of the torch for exhaustion from the torch onto the workpiece in the form of an ionized plasma. A secondary gas flow path in the torch receives a secondary gas separate from the primary working gas and directs it through the torch. The primary gas flow path is in fluid communication with the secondary gas flow path substantially upstream of the central exit opening of the torch to bleed primary working gas in the primary gas flow path into the secondary gas flow path for admixture therewith to form a secondary gas mixture to be exhausted from the torch.Type: GrantFiled: January 29, 2001Date of Patent: January 8, 2002Assignee: Thermal Dynamics CorporationInventors: Milind G. Kelkar, Kevin D. Horner-Richardson, Jesse A. Roberts, Geoffrey H. Putnam, David A. Small
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Publication number: 20010025833Abstract: A plasma arc torch and method for cutting a workpiece in which the torch has a primary gas flow path for receiving a primary working gas and directing it through the torch to a central exit opening of the torch for exhaustion from the torch onto the workpiece in the form of an ionized plasma. A secondary gas flow path in the torch receives a secondary gas separate from the primary working gas and directs it through the torch. The primary gas flow path is in fluid communication with the secondary gas flow path substantially upstream of the central exit opening of the torch to bleed primary working gas in the primary gas flow path into the secondary gas flow path for admixture therewith to form a secondary gas mixture to be exhausted from the torch.Type: ApplicationFiled: January 29, 2001Publication date: October 4, 2001Inventors: Milind G. Kelkar, Kevin D. Horner-Richardson, Jesse A. Roberts, Geoffrey H. Putnam, David A. Small