Patents by Inventor Brad Ludwig

Brad Ludwig 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).

  • Temperature control system and method of operating the same
    Patent number: 8136363
    Abstract: A method of conditioning air in a vehicle load space. The method includes providing a refrigeration circuit including an evaporator, directing refrigerant through the refrigeration circuit, directing load space air across the evaporator, sensing a first condition based on one of a temperature and a pressure of the refrigerant in the refrigeration circuit upstream from the evaporator, determining a second condition based on one of a temperature and a pressure of the refrigerant in the evaporator, determining a difference between the first condition and the second condition, and initiating a defrost process of the evaporator when the difference is greater than a threshold.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: March 20, 2012
    Assignee: Thermo King Corporation
    Inventor: Brad Ludwig
  • Temperature control system and method of operating the same
    Publication number: 20060248904
    Abstract: A method of conditioning air in a vehicle load space.
    Type: Application
    Filed: April 13, 2006
    Publication date: November 9, 2006
    Applicant: Thermo King Corporation
    Inventor: Brad Ludwig