Patents by Inventor Donald R. Soulsby

Donald R. Soulsby 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).

  • Programmable controller having a system for monitoring the logic conditions at external locations
    Patent number: 4078259
    Abstract: A system for monitoring the logic conditions at the external addressable locations of a programmable controller wherein intermediate memory units are provided for controlling separate input and output locations. The controller periodically sequences the data in the intermediate memory units to maintain the logic conditions in the input and output locations. If the logic conditions are to be updated, the controller obtains access to the sequencing arrangement and changes the logic conditions within the intermediate memory units. Thereafter, the sequencing continues to maintain the desired logic conditions in the input and output locations.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: March 7, 1978
    Assignee: Gulf & Western Industries, Inc.
    Inventors: Donald R. Soulsby, William H. Seipp