Patents by Inventor Andrew J. Henry
Andrew J. Henry 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).
-
Publication number: 20230390852Abstract: A method and apparatus for providing welding-type power is disclosed. It includes an input circuit, a dc bus, an output circuit, and a control module. The input circuit receives power and provides an intermediate signal to the bus. The output circuit receives the dc bus and provides an ac welding-type output. The output circuit includes a half-bridge output inverter with at least first and second switches. The output inverter further includes an output control circuit. The output control circuit provides freewheeling paths that includes control switches, the output, antiparallel diodes. The control module has a four quadrant control module that provides control signals to the half bridge output inverter and provides modulating control signals to the first and second output control switches. The modulating signals cause the output control switches to be turned on and off multiple times to control a rate of change of output current.Type: ApplicationFiled: March 14, 2023Publication date: December 7, 2023Inventor: Andrew J. Henry
-
Patent number: 11745286Abstract: An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit; a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; and stray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component.Type: GrantFiled: May 29, 2020Date of Patent: September 5, 2023Assignee: Illinois Tool Works Inc.Inventors: Joseph C. Schneider, Michael D. Madsen, Bernard J. Vogel, Andrew J. Henry
-
Patent number: 11602801Abstract: A method and apparatus for providing welding-type power is disclosed. It includes an input circuit, a dc bus, an output circuit, and a control module. The input circuit receives power and provides an intermediate signal to the bus. The output circuit receives the dc bus and provides an ac welding-type output. The output circuit includes a half-bridge output inverter with at least first and second switches. The output inverter further includes an output control circuit. The output control circuit provides freewheeling paths that includes control switches, the output, antiparallel diodes. The control module has a four quadrant control module that provides control signals to the half bridge output inverter and provides modulating control signals to the first and second output control switches. The modulating signals cause the output control switches to be turned on and off multiple times to control a rate of change of output current.Type: GrantFiled: December 23, 2019Date of Patent: March 14, 2023Assignee: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Publication number: 20210252623Abstract: A method and apparatus for providing welding-type power includes an input circuit, a power circuit, and a controller. The input circuit receives input power and provides intermediate power. The power circuit has a power control input with at least one switch that responds to the control input. The power circuit receives the intermediate power and provides welding type output power. The controller has a set point input and a control output. The control output is connected to the power control input. The control circuit also includes a pwm module that responds to the user set point input and provided the control output. The pwm module can include a short duty cycle linearizing module. The pwm module can also include a short duty cycle charging ramp module.Type: ApplicationFiled: May 3, 2021Publication date: August 19, 2021Applicant: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Publication number: 20210245286Abstract: A method and apparatus for providing welding type power on one of at least two output terminals is disclosed. Input power is received and welding type power is derived and provided by a shared power circuit. The welding type power is provided across a shared terminal and only two process terminals in response to a desired process. The desired process can be set by user input, feedback, or sensing working connections. The process terminal is selected by selectively opening and closing at least two controllable switches.Type: ApplicationFiled: February 2, 2021Publication date: August 12, 2021Applicant: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Patent number: 11014182Abstract: A method and apparatus for providing welding-type power includes an input circuit, a power circuit, and a controller. The input circuit receives input power and provides intermediate power. The power circuit has a power control input with at least one switch that responds to the control input. The power circuit receives the intermediate power and provides welding type output power. The controller has a set point input and a control output. The control output is connected to the power control input. The control circuit also includes a pwm module that responds to the user set point input and provided the control output. The pwm module can include a short duty cycle linearizing module. The pwm module can also include a short duty cycle charging ramp module.Type: GrantFiled: July 17, 2015Date of Patent: May 25, 2021Assignee: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Patent number: 10906117Abstract: A method and apparatus for providing welding type power on one of at least two output terminals is disclosed. Input power is received and welding type power is derived and provided by a shared power circuit. The welding type power is provided across a shared terminal and only two process terminals in response to a desired process. The desired process can be set bu user input, feedback, or sensing working connections. The process terminal is selected by selectively opening and closing at least two controllable switches.Type: GrantFiled: January 30, 2018Date of Patent: February 2, 2021Assignee: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Publication number: 20210016387Abstract: An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit; a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; and stray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component.Type: ApplicationFiled: May 29, 2020Publication date: January 21, 2021Inventors: Joseph C. Schneider, Michael D. Madsen, Bernard J. Vogel, Andrew J. Henry
-
Publication number: 20200361040Abstract: Provided is an electrically isolated pump system that comprises welding-type power conversion circuitry configured to convert input power to welding-type power, a motor configured to output mechanical power using motor voltage derived from the input power by a motor power conversion circuitry, and an electrically insulating isolating coupler configured to transmit the mechanical power to a pump, where the motor is electrically isolated from the pump and the pump is configured to use the transmitted mechanical power to pump fluid.Type: ApplicationFiled: April 24, 2020Publication date: November 19, 2020Inventors: Brian J. Bornemann, Andrew J. Henry
-
Publication number: 20200130092Abstract: A method and apparatus for providing welding-type power is disclosed. It includes an input circuit, a dc bus, an output circuit, and a control module. The input circuit receives power and provides an intermediate signal to the bus. The output circuit receives the dc bus and provides an ac welding-type output. The output circuit includes a half-bridge output inverter with at least first and second switches. The output inverter further includes an output control circuit. The output control circuit provides freewheeling paths that includes control switches, the output, antiparallel diodes. The control module has a four quadrant control module that provides control signals to the half bridge output inverter and provides modulating control signals to the first and second output control switches. The modulating signals cause the output control switches to be turned on and off multiple times to control a rate of change of output current.Type: ApplicationFiled: December 23, 2019Publication date: April 30, 2020Applicant: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Patent number: 10549374Abstract: A method and apparatus for providing welding-type power is disclosed. The apparatus includes an input circuit, a dc bus, an output circuit, and a control module. The input circuit receives power and provides an intermediate signal to the bus. The output circuit receives the dc bus and provides an ac welding-type output. The output circuit includes a half-bridge output inverter with at least first and second switches. The output inverter further includes an output control circuit. The output control circuit provides freewheeling paths that includes control switches, the output, antiparallel diodes. The control module has a four quadrant control module that provides control signals to the half bridge output inverter and provides modulating control signals to the first and second output control switches. The modulating signals cause the output control switches to be turned on and off multiple times to control a rate of change of output current.Type: GrantFiled: December 31, 2015Date of Patent: February 4, 2020Assignee: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Patent number: 10456851Abstract: A method and apparatus for providing welding type power is disclosed. At least one circuit board is used that is partially potted using a potting barrier affixed to the circuit board. The partially potted portion can be inside an enclosed air flow space.Type: GrantFiled: July 17, 2015Date of Patent: October 29, 2019Assignee: Illinois Tool Works Inc.Inventors: Brian J. Borneman, Andrew J Henry
-
Publication number: 20190232414Abstract: A method and apparatus for providing welding type power on one of at least two output terminals is disclosed. Input power is received and welding type power is derived and provided by a shared power circuit. The welding type power is provided across a shared terminal and only two process terminals in response to a desired process. The desired process can be set bu user input, feedback, or sensing working connections. The process terminal is selected by selectively opening and closing at least two controllable switches.Type: ApplicationFiled: January 30, 2018Publication date: August 1, 2019Applicant: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Publication number: 20170189986Abstract: A method and apparatus for providing welding-type power is disclosed. It includes an input circuit, a dc bus, an output circuit, and a control module. The input circuit receives power and provides an intermediate signal to the bus. The output circuit receives the dc bus and provides an ac welding-type output. The output circuit includes a half-bridge output inverter with at least first and second switches. The output inverter further includes an output control circuit. The output control circuit provides freewheeling paths that includes control switches, the output, antiparallel diodes. The control module has a four quadrant control module that provides control signals to the half bridge output inverter and provides modulating control signals to the first and second output control switches. The modulating signals cause the output control switches to be turned on and off multiple times to control a rate of change of output current.Type: ApplicationFiled: December 31, 2015Publication date: July 6, 2017Applicant: IIIinois Tool Works Inc.Inventor: Andrew J. Henry
-
Publication number: 20170014932Abstract: A method and apparatus for providing welding-type power includes an input circuit, a power circuit, and a controller. The input circuit receives input power and provides intermediate power. The power circuit has a power control input with at least one switch that responds to the control input. The power circuit receives the intermediate power and provides welding type output power. The controller has a set point input and a control output. The control output is connected to the power control input. The control circuit also includes a pwm module that responds to the user set point input and provided the control output. The pwm module can include a short duty cycle linearizing module. The pwm module can also include a short duty cycle charging ramp module.Type: ApplicationFiled: July 17, 2015Publication date: January 19, 2017Applicant: Illinois Tool Works Inc.Inventor: Andrew J. Henry
-
Publication number: 20170014934Abstract: A method and apparatus for providing welding type power is disclosed. At least one circuit board is used that is partially potted using a potting barrier affixed to the circuit board. The partially potted portion can be inside an enclosed air flow space.Type: ApplicationFiled: July 17, 2015Publication date: January 19, 2017Applicant: Illinois Tool Works Inc.Inventors: Brian J. Borneman, Andrew J. Henry