Patents by Inventor Lars S. Enger

Lars S. Enger 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).

  • Intake and discharge duct with external terminal for a burner-operated refrigerator
    Patent number: 4286569
    Abstract: An external intake-discharge duct for a burner-operated refrigerator having a sealed system. The intake communicates with the atmosphere outside of a trailer or a motor home and is located in a service door for the burner of a refrigerating apparatus. Atmospheric air is conducted downward through the air intake to the burner, and hot combustion gases are conducted upwards through a flue pipe and out through a discharge or outlet. The duct terminates in a cap-like structure located externally in a wall of a trailer or motor home.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: September 1, 1981
    Assignee: Aktiebolaget Electrolux
    Inventors: Ernst L. A. Bergman, Peter E. Blomberg, Lars S. Enger, Bengt R. Reistad, Sonny O. Wallgren