Patents by Inventor Robert David Stokes

Robert David Stokes 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).

  • Liquid chemical dilution and dosing system
    Patent number: 5746238
    Abstract: This invention relates to an apparatus and method for diluting a chemical concentrate. More particularly, dilution control is achieved by monitoring two flow meters, comparing the flow rate information, and adjusting the diluent flow to achieve a predetermined dilution of the chemical concentrate. An air push is preferably used to deliver the chemicals to the utilization points. Also a controller is used to prioritize requests from the utilization points in a hierarchal fashion.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: May 5, 1998
    Assignee: Ecolab, Inc.
    Inventors: Daniel F. Brady, John E. McCall, Jr., Paul J. Mattia, John M. Lavorata, Matthew D. PeKarna, Robert David Stokes, Clyde Arthur Bailey