Patents by Inventor Greg M. Gibbons

Greg M. Gibbons 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).

  • Safety drive circuit for pump motor
    Patent number: 5076761
    Abstract: A DC motor drive system for mechanically linking to a reciprocable pump, having safety circuits for disconnecting power from the system upon detection of excessive line voltage variations, excessive line current variations, excessive pressure demands, and electrical and mechanical faults which may occur in system operation.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: December 31, 1991
    Assignee: Graco Inc.
    Inventors: Duane D. Krohn, Greg M. Gibbons