Patents by Inventor Herbert J. Larson

Herbert J. Larson 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).

  • Heat exchanger core with end covers
    Patent number: 4401154
    Abstract: The outermost tubes (50) of a heat exchanger core (20) have not be as adequately cooled as have the interior tubes (50) by the flow of air between the fins (40) and the tubes (50). Herein, a cover (80 or 85) is connected over the edges (45) of the fins (40) defining a respective one of first and second end surfaces (70,75) and is spaced from the inlet surface (60) of the core (20). Consequently, the outermost tube (50), which is nearest the cover (80 or 85), is cooled substantially to the same degree as the other tubes (50). In one embodiment of the present invention, about a 5% increase in the thermal efficiency of the core (20) is attained.
    Type: Grant
    Filed: November 7, 1980
    Date of Patent: August 30, 1983
    Assignee: Caterpillar Tractor Co.
    Inventors: Gene A. Anders, Herbert J. Larson, Charles R. Miller