Patents by Inventor David Prey

David Prey 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).

  • Methods and apparatus for servicing welding equipment
    Patent number: 11536776
    Abstract: A low voltage system and method for servicing welding equipment including a service tool that may provide a low voltage power source to the welding equipment, enabling the welding equipment to be tested in a low voltage mode of operation. The service tool may also run various test sequences on the welding equipment operating in a low voltage mode of operation to troubleshoot and diagnose any issues with the circuitry of the welding equipment.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: December 27, 2022
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Mark A. Ulrich, Bernard J. Vogel, David Prey
  • METHODS AND APPARATUS FOR SERVICING WELDING EQUIPMENT
    Publication number: 20200072913
    Abstract: A low voltage system and method for servicing welding equipment including a service tool that may provide a low voltage power source to the welding equipment, enabling the welding equipment to be tested in a low voltage mode of operation. The service tool may also run various test sequences on the welding equipment operating in a low voltage mode of operation to troubleshoot and diagnose any issues with the circuitry of the welding equipment.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: Mark A. Ulrich, Bernard J. Vogel, David Prey