Patents Assigned to APD Cryogenics Inc.
  • Cryogen thermal storage matrix
    Patent number: 5012650
    Abstract: Thermal storage matrices, particularly useful in conjunction with the cooling of the infra-red detectors employed in space related or missile guidance systems are taught. Also taught are cryostat assemblies, including such thermal storage assemblies.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: May 7, 1991
    Assignee: APD Cryogenics, Inc.
    Inventor: Ralph Longsworth
  • Parallel wrapped tube heat exchanger
    Patent number: 4697635
    Abstract: A counter flow heat exchanger comprising a plurality of tubes disposed in a bundle array or tube within tube configuration to enhance heat transfer between high and low pressure tubes in the array or tube in tube configuration. Also disclosed are a method of increasing the heat transfer capacity of a tube bundle heat exchanger and a liquid helium temperature refrigerator or a reliquefier utilizing the heat exchanger.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: October 6, 1987
    Assignee: APD Cryogenics Inc.
    Inventors: Ralph C. Longsworth, William A. Steyert