Patents by Inventor Glenn W. Campbell

Glenn W. Campbell 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).

  • System and method for converting an AGTAW welder into an AGMAW welder
    Patent number: 5315089
    Abstract: Both a system and a method for converting two AGTAW welders into a AGMAW welder is provided. The system generally comprises a MIG weldhead for replacing the TIG weldhead of one of the AGTAW welders, a pulser multiplier circuit for increasing the frequency of the power supply output current from 10 to between 300 and 800 pulses per second, and a wire feed motor and motor control circuit capable of feeding weld wire at a rate compatible with a AGMAW welding operation. In the method of the invention, the control circuit assembly of one of the AGTAW welders is connected in parallel to the power supplies of both of the two AGTAW welders, and the outputs of these power supplies are likewise connected in parallel. The TIG weldhead of one of the AGTAW welders is replaced with the MIG weldhead, and the pulser multiplier circuit is selectively connected to the current pulser of the single control circuit assembly which controls both power supplies.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: May 24, 1994
    Assignee: Westinghouse Electric Corporation
    Inventors: Travis K. Hughes, Glenn W. Campbell, Charles E. Burgoon, John B. Gossett, Keith R. Spencer