Patents by Inventor Orval E. Jacobsen

Orval E. Jacobsen 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 with by-pass
    Patent number: 4498524
    Abstract: A method and means for extracting heat from an exhaust stack under highly corrosive and fluctuating conditions. An in-line exhaust gas heat exchanger having selective dual concentric exhaust paths and having a plurality of longitudinal structural stringers to insure against weakening of the exhaust stack. A plurality of heat exchanger coils are located in the outermost exhaust path and means is provided for fully draining the liquid contents thereof. Temperature control method means is provided for regulating the temperature of fluid within the coils due to exhaust stack temperature fluctuations for controlling critical dew point situations.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: February 12, 1985
    Inventor: Orval E. Jacobsen
  • Economizer with an integral gas bypass
    Patent number: 4371027
    Abstract: A method and means for extracting heat from an exhaust stack under highly corrosive and fluctuating conditions. An in-line exhaust gas heat exchanger having selective dual concentric exhaust paths and having a plurality of longitudinal structural stringers to insure against weakening of the exhaust stack. A plurality of heat exchanger coils are located in the outermost exhaust path and means is provided for fully draining the liquid contents thereof. Temperature control apparatus is provided for both regulating the temperature of fluid within the heat exchange coils and for regulating the exhaust stack temperature for controlling critical dewpoint situations.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: February 1, 1983
    Inventor: Orval E. Jacobsen