Patents by Inventor Kurt L. Liebendorfer

Kurt L. Liebendorfer 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).

  • Low charge packaged ammonia refrigeration system with evaporative condenser
    Patent number: 11885513
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: January 30, 2024
    Assignee: Evapco, Inc.
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • LOW CHARGE PACKAGED AMMONIA REFRIGERATION SYSTEM WITH EVAPORATIVE CONDENSER
    Publication number: 20230108961
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Application
    Filed: June 15, 2021
    Publication date: April 6, 2023
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Low charge packaged ammonia refrigeration system with evaporative condenser
    Patent number: 11035594
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 15, 2021
    Assignee: Evapco, Inc.
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • LOW CHARGE PACKAGED AMMONIA REFRIGERATION SYSTEM WITH EVAPORATIVE CONDENSER
    Publication number: 20180163998
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Prior art large receiver vessels may be replaced with a single or dual phase cyclonic separator also housed in the plenum of the evaporative condenser.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 14, 2018
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright