Patents by Inventor Frederick A. Enander

Frederick A. Enander 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).

  • Ultrasonic control of filling a container
    Patent number: 4437497
    Abstract: A system for filling containers with liquid and the like which reflects ultrasonic pulses from the surface of the liquid as it rises in the container being filled. Range gates at predetermined fill levels control throttling down and/or shut off of the filling liquid.
    Type: Grant
    Filed: September 23, 1981
    Date of Patent: March 20, 1984
    Inventor: Frederick A. Enander