Patents by Inventor Roger M. Chamberlin

Roger M. Chamberlin 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).

  • High power factor rectifier/filter for three phase input welder or plasma cutter
    Patent number: 9550249
    Abstract: A power supply is provided. The power supply in one form includes a rectifier circuit, a capacitor and an RC circuit. The rectifier circuit is configured to receive a three phase AC signal. The rectifier circuit has a positive output connected to a positive node and a negative output connected to a negative node. The capacitor is connected in parallel with the rectifier circuit between the positive node and the negative node. The RC circuit includes a resistor and capacitor connected in electrical series connection where the resistor and capacitor are connected between the positive node and the negative node in parallel with the first capacitor and the rectifier circuit.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: January 24, 2017
    Assignee: Victory Equipment Company
    Inventors: Stephen W. Norris, Roger M. Chamberlin
  • SPLIT PHASE SYNCHRONIZATION OF WELDER/CUTTER INVERTER MODULES FOR RIPPLE IMPROVEMENT
    Publication number: 20140211512
    Abstract: A modular power supply is provided. The modular power supply includes multiple inverters and a controller. Each inverter is configured to receive an input voltage and provide an output to a load. The controller is configured to provide a synchronization signal to each inverter of the plurality of inverters.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Applicant: Thermal Dynamics Corporation
    Inventors: Steven W. Norris, Roger M. Chamberlin, Michael Sawchik
  • HIGH POWER FACTOR RECTIFIER/FILTER FOR THREE PHASE INPUT WELDER OR PLASMA CUTTER
    Publication number: 20140209588
    Abstract: A power supply is provided. The power supply in one form includes a rectifier circuit, a capacitor and an RC circuit. The rectifier circuit is configured to receive a three phase AC signal. The rectifier circuit has a positive output connected to a positive node and a negative output connected to a negative node. The capacitor is connected in parallel with the rectifier circuit between the positive node and the negative node. The RC circuit includes a resistor and capacitor connected in electrical series connection where the resistor and capacitor are connected between the positive node and the negative node in parallel with the first capacitor and the rectifier circuit.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Applicant: Thermal Dynamics Corporation
    Inventors: Stephen W. Norris, Roger M. Chamberlin