Patents by Inventor William Ehrich Stuart

William Ehrich Stuart 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).

  • Control method for a self-powered cryogen based refrigeration system
    Patent number: 6609382
    Abstract: A method of temperature control in a cryogenic system, wherein the system includes a cryogenic tank. The method comprises providing a motor speed sensor which determines a motor speed, providing a pressure sensor which determines a cryogenic pressure, providing a temperature sensor in the conditioned space which measures a temperature within the conditioned space, providing a deprived integral region, and generating an overriding control signal at the proportional-integral-derivative controller when the temperature and the pressure are beyond a temperature set point and a pressure set point.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: August 26, 2003
    Assignee: Thermo King Corporation
    Inventors: David J. Vander Woude, Herman H. Viegas, Jayaram Seshadri, Joseph Louis Glentz, Bryan Edward Schwichtenberg, William Ehrich Stuart
  • Control method for a self-powered cryogen based refrigeration system
    Publication number: 20030019224
    Abstract: A method of temperature control in a cryogenic system, wherein the system includes a cryogenic tank. The method comprises providing a motor speed sensor which determines a motor speed, providing a pressure sensor which determines a cryogenic pressure, providing a temperature sensor in the conditioned space which measures a temperature within the conditioned space, providing a deprived integral region, and generating an overriding control signal at the proportional-integral-derivative controller when the temperature and the pressure are beyond a temperature set point and a pressure set point.
    Type: Application
    Filed: June 4, 2002
    Publication date: January 30, 2003
    Applicant: Thermo King Corporation
    Inventors: David J. Vander Woude, Herman H. Viegas, Jayaram Seshadri, Joseph Louis Glentz, Bryan Edward Schwichtenberg, William Ehrich Stuart