Patents by Inventor Duncan Thomas Lasley

Duncan Thomas Lasley 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).

  • System and method of temperature control for a transport refrigeration system
    Patent number: 10675950
    Abstract: A system and method for temperature control for a Transport Refrigeration System (TRS) is provided. Particularly, a method for temperature control of an internal space of a refrigerated transport unit is provided. The method includes determining a measured internal space temperature within the internal space of the refrigerated transport unit. The method also includes calculating, via a TRS controller, a temperature difference between the measured internal space temperature and a desired set point temperature. Also, the method includes adjusting, via the TRS controller, a duty cycle percentage of a liquid line solenoid valve and/or a hot gas solenoid valve based on the temperature difference to control an amount of refrigerant directed to the thermal expansion device and the evaporator and/or an amount of hot gas directed to the evaporator.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: June 9, 2020
    Assignee: Thermo King Corporation
    Inventors: David J. Renken, Mark D. Leasure, Duncan Thomas Lasley, Kenneth James Gleeson, Peter Van Calligan, Scott A. Munns
  • SYSTEM AND METHOD OF TEMPERATURE CONTROL FOR A TRANSPORT REFRIGERATION SYSTEM
    Publication number: 20160272049
    Abstract: A system and method for temperature control for a Transport Refrigeration System (TRS) is provided. Particularly, a method for temperature control of an internal space of a refrigerated transport unit is provided. The method includes determining a measured internal space temperature within the internal space of the refrigerated transport unit. The method also includes calculating, via a TRS controller, a temperature difference between the measured internal space temperature and a desired set point temperature. Also, the method includes adjusting, via the TRS controller, a duty cycle percentage of a liquid line solenoid valve and/or a hot gas solenoid valve based on the temperature difference to control an amount of refrigerant directed to the thermal expansion device and the evaporator and/or an amount of hot gas directed to the evaporator.
    Type: Application
    Filed: November 18, 2014
    Publication date: September 22, 2016
    Inventors: David J. Renken, Mark D. Leasure, Duncan Thomas Lasley, Kenneth James Gleeson, Peter Van Calligan, Scott A. Munns