Patents by Inventor Donald M. Spencer

Donald M. Spencer 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).

  • Compact cooling turbine-heat exchanger assembly
    Patent number: 4503683
    Abstract: A compact air cycle refrigeration system utilizes a three wheel air cycle cooling machine having a fan mounted between a turbine and compressor on a common drive shaft. The fan is positioned between two series-mounted heat exchangers mounted in a ram air duct and used to cool hot engine bleed air which drives the turbine.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: March 12, 1985
    Assignee: The Garrett Corporation
    Inventors: Kurt H. Wieland, Donald M. Spencer, Robert C. Kinsell