Patents by Inventor Ervin R. Wiebe

Ervin R. Wiebe 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).

  • Multistation refrigeration system
    Patent number: 4077231
    Abstract: A closed cycle refrigeration (CCR) system is disclosed for providing cooling at different temperatures to different parts of a maser. The CCR includes a first station for cooling the maser's parts, except the amplifier portion, to 4.5.degree. K. The CCR further includes means with a 3.0.degree. K station for cooling the maser's amplifier to 3.0.degree. K and, thereby, increases the maser's gain and/or bandwidth by a significant factor. The means which provide the 3.0.degree. K cooling include a pressure regulator, heat exchangers, an expansion valve, and a vacuum pump, which coact to cause helium, provided from a compressor, to liquefy and thereafter expand so as to vaporize. The heat of vaporization for the helium is provided by the maser amplifier, which is thereby cooled to 3.0.degree. K.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: March 7, 1978
    Inventors: James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher, Ervin R. Wiebe