Patents by Inventor Young T. Cho

Young T. Cho 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).

  • Patent number: 6651451
    Abstract: A variable capacity refrigeration system which does not require a costly inverter compressor and does not exhibit low energy efficiency at high capacity. The system employs a constant speed compressor that operates continuously when the system is energized, irrespective of the heat load, and a refrigerant bypass path including a secondary expansion device, a heat exchanger, and a flow control device which is operable to permit a portion of the refrigerant exiting from the condenser to flow through the bypass path to an inlet of the compressor when the heat load is below a predetermined threshold, whereby the heat exchanger operates as a secondary evaporator, and to prevent refrigerant exiting from the condenser from flowing through the bypass path to the compressor inlet when the heat load is not below the predetermined threshold.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: November 25, 2003
    Assignee: Vai Holdings, LLC
    Inventors: Young T. Cho, Cheolho Bai
  • Patent number: 4261068
    Abstract: A welded wire openwork mesh as a reinforcement for honeycomb foundation in a honeycomb frame provides strength against stretching, sagging, bulging or buckling, and support of honeycomb in the frame allowing rapid centrifuging without breakage.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: April 14, 1981
    Inventor: Young T. Cho