Patents by Inventor Bradley Michael Ludwig

Bradley Michael 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 apparatus and method of operating the same
    Patent number: 6910341
    Abstract: A temperature control unit and a method of operating a temperature control unit. The temperature control unit including a refrigeration circuit enclosing a refrigerant and having a compressor, a condenser, and an evaporator coil. The method including providing a first flow path extending through the compressor, the condenser, and the evaporator, providing a second flow path extending through the compressor and the evaporator, the second flow path bypassing a section of the refrigeration circuit, directing refrigerant through the first flow path during operation in a cooling mode, directing refrigerant through the second flow path during operation in a heating mode, and recovering refrigerant from the section of the refrigeration circuit during operation in a recovery cycle.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: June 28, 2005
    Assignee: Thermo King Corporation
    Inventors: Panaya Robert Srichai, William Francis Mohs, Bradley Michael Ludwig