Patents by Inventor Donald L. Proudman

Donald L. Proudman 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).

  • Fluid measuring, dilution and delivery system with air leakage monitoring and correction
    Patent number: 5884649
    Abstract: A device for automatic dilution of chemical additives and water utilizing a single pump (20) drawing water and other chemical additives through a dilution manifold (10). The introduction of air into the system is monitored such that the system performance is not impaired. If the air leak is small corrections can be made or the system will accept the small error, but if the air leak is large, the system will shut down and activate an indication or alarm to signify that some malfunction has occurred, such as a chemical supply being unconnected or empty.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: March 23, 1999
    Inventor: Donald L. Proudman
  • Fluid measuring, dilution and delivery system with air leakage monitoring and correction
    Patent number: 5769108
    Abstract: A device for automatic dilution of chemical additives and water utilizing a single pump (20) drawing water and other chemical additives through a dilution manifold (10). The introduction of air into the system is monitored such that the system performance is not impaired. If the air leak is small corrections can be made, and if the air leak is large, the system will shut down and activate an indication or alarm to signify that some malfunction has occurred, such as a chemical supply is unconnected or empty.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: June 23, 1998
    Inventor: Donald L. Proudman
  • Fluid measuring, dilution and delivery system
    Patent number: 5246026
    Abstract: A device for automatic dilution of chemical additives and water utilizing a single pump (20) drawing water and other chemical additives through a dilution manifold (24). The chemicals are fed through adjustable orifices and valves, and a microprocessor based controller oversees and controls system operation. Two digital flow meters are arranged wherein the controller compares the difference between the flow meters and delivers a desired volume of the chemical additive and water.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: September 21, 1993
    Assignee: Proudman Systems, Inc.
    Inventor: Donald L. Proudman