Patents by Inventor Klaus Gollnow

Klaus Gollnow 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).

  • Refrigeration plant and method of controlling a refrigeration plant
    Patent number: 4966006
    Abstract: The refrigeration plant disclosed herein includes an evaporator, a compressor connected to the outlet of the evaporator, a condenser connected to the outlet of the compressor, a controllable expansion valve connected to the outlet of the condenser and having its outlet connected to the evaporator and condenser pressure controls for providing at the least possible condenser pressure, the degree of opening of the expansion valve to obtain an optimum ratio between the condenser pressure and the evaporator evaporator performance. That is, the degree of opening of the expansion valve lies in a range giving the least possible condenser pressure.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: October 30, 1990
    Assignee: Danfoss A/S
    Inventors: Sven E. Thuesen, Klaus Gollnow