Patents by Inventor Edwin L. Hankinson

Edwin L. Hankinson 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).

  • Flow system with high resolution proportional valve with customizable performance
    Patent number: 7051757
    Abstract: A flow system includes a proportional valve constructed of chemically inert materials (PTFE) to produce variable fluid flow rates of liquids including inert, and high purity, and even highly corrosive liquids. Gases of many varieties can also be flow controlled. The valve may be precisely set, either manually, or by use of an actuating motor, remotely or electronically, for various flow rates for the required fluid. The valve allows for specific proportional flow parameters to be programmed into valve structure and configuration to provide precise and repeatable highest resolution flow control for a wide variety of complex flow conditions (pressure, temperature and viscosity).
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: May 30, 2006
    Assignee: McMillan Company
    Inventors: Robert M. McMillan, Edwin L. Hankinson
  • Flow system with high resolution proportional valve with customizable performance
    Publication number: 20040250856
    Abstract: A flow system includes a proportional valve constructed of chemically inert materials (PTFE) to produce variable fluid flow rates of liquids including inert, and high purity, and even highly corrosive liquids. Gases of many varieties can also be flow controlled. The valve may be precisely set, either manually, or by use of an actuating motor, remotely or electronically, for various flow rates for the required fluid. The valve allows for specific proportional flow parameters to be programmed into valve structure and configuration to provide precise and repeatable highest resolution flow control for a wide variety of complex flow conditions (pressure, temperature and viscosity).
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Inventors: Robert M. McMillan, Edwin L. Hankinson