Patents by Inventor David A. Stompro

David A. Stompro 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).

  • Pre-resistance-welding resistance check
    Patent number: 5021625
    Abstract: A preweld resistance check for resistance welding machines uses an open circuited measurement to determine the welding machine resistance, a closed circuit measurement to determine the parallel resistance of a workpiece set and the machine, and a calculation to determine the resistance of the workpiece set. Any variation in workpiece set or machine resistance is an indication that the weld may be different from a control weld.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: June 4, 1991
    Assignee: United States Department of Energy
    Inventors: Dennis E. Destefan, David A. Stompro