Patents by Inventor Ronald K. Wilhelm

Ronald K. Wilhelm 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).

  • Combustion control apparatus
    Patent number: 4439138
    Abstract: A combustion device includes a fuel-air ratio controller. A control is coupled to receive a first signal functionally related to the status of the fuel-air controller and a second signal from an oxygen sensor which is functionally related to the oxygen in the discharge gases from the combustion zone. The control is operative to provide an output signal to a fuel regulator for adjusting the fuel delivered to the combustion zone in relation to the oxygen in the discharge gases.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: March 27, 1984
    Assignee: Aqua-Chem, Inc.
    Inventors: Glenn D. Craig, Ronald K. Wilhelm, Roy M. Rulseh