Patents by Inventor Frank E. McCrea

Frank E. McCrea 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).

  • Support assembly for cryogenically coolable low-noise choked waveguide
    Patent number: 4215327
    Abstract: A compact cryogenically coolable choked waveguide particularly for low-noise input coupling into a cryogenically cooled device, such as a maser or parametric amplifier, utilizes coaxial stainless steel support tubes surrounding the waveguide and connected in cascade to provide a folded low thermal conduction path. The edges of the tubes connected are welded.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: July 29, 1980
    Inventors: Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, Frank E. McCrea