Patents Represented by Attorney John O. Tresanksy

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  • Cooling by conversion of para to ortho-hydrogen
    Patent number: 4393039
    Abstract: The cooling capacity of a solid hydrogen cooling system is significantly increased by exposing vapor created during evaporation of a solid hydrogen mass to a catalyst and thereby accelerating the endothermic para-to-ortho transition of the vapor to equilibrium hydrogen. Catalysts such as nickel, copper, iron or metal hydride gels of films of nickel, copper or iron or hydride gels of nickel, copper or iron in a low pressure drop catalytic reactor are suitable for accelerating the endothermic para-to-ortho conversion.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: July 12, 1983
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Allan Sherman