Patents by Inventor Edgar D. Kuhn

Edgar D. Kuhn 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).

  • Refrigeration system
    Patent number: 4026122
    Abstract: In a refrigeration system comprising a compressor, expansion means, an evaporator and a condenser, the improvement comprising a normally open, spring-loaded valve positioned so that when the compressor is not operating a passage is provided between the compression chamber and the inlet to the compression chamber, and when the compressor is operating the passage is closed.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: May 31, 1977
    Assignee: Primore Sales, Inc.
    Inventors: Edgar D. Kuhn, Leonard E. Lathrop, Robert J. Sanderson