Patents by Inventor George P. Lagodmos

George P. Lagodmos 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).

  • Cryogenic thermal switch
    Patent number: 4770004
    Abstract: Cryogenic thermal switch (10) comprises base (30) which is clamped onto the flange of cold cylinder (24). Heat transfer ring (14) is positioned spaced between thermal clamp surfaces (36, 48) by means of support isolators (90,92,94). Springs (64) urge the clamp surfaces to clamp on ring (14) while metal tubes (70, 72, 74, 76) hold the clamp surfaces in a spaced position while at warm temperature. When the structure is cold, the metal tubes shrink and the springs (64) cause the surfaces to clamp on ring (14) for thermal conduction.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: September 13, 1988
    Assignee: Hughes Aircraft Company
    Inventor: George P. Lagodmos
  • Internal heater module for cryogenic refrigerators and Stirling heat engines
    Patent number: 4245477
    Abstract: Heat energy is supplied to the hot volume of a Vuilleumier cycle cryogenic refrigerator, or to a Stirling cycle heat engine, with and by the inventive heater module which is disposed within the hot working volume of the machine. The heater module is in contact with the working fluid within the hot volume, thereby more efficiently supplying heat energy to the machine. This invention accomplishes heat input to the most optimum place, namely: inside the hot volume. A preferred embodiment and a variation are taught.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: January 20, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John B. Glode, George P. Lagodmos
  • Cryogenic regenerator
    Patent number: 4231418
    Abstract: Regenerator for a cryogenic system has lead sphere 58 packing and has grooves 54 and 56 in the regenerator walls to prevent gas bypass. Felt packing 66 between screens 64 and 68 causes continued compression of the regenerator packing as it changes size due to temperature changes. Gas spaces between the regenerator spheres is maintained low and regenerator sphere damage due to high intersphere loading is minimized.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: November 4, 1980
    Assignee: Hughes Aircraft Company
    Inventor: George P. Lagodmos