Patents by Inventor Karl G. Tell

Karl G. Tell 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).

  • Apparatus for unloading loose particulate solid material
    Patent number: 4194615
    Abstract: An apparatus for unloading loose particulate solid material having a discharge pipe and a positive discharge device at the outlet end of the discharge pipe. A pressure sensor is arranged to sense the pressure of the material at the outlet end of the positive discharge device and to produce an output signal in response thereto. A positioning device for varying the position of the outlet of positive discharge device is provided and is driven in response to the output signal of the pressure sensor.
    Type: Grant
    Filed: August 25, 1978
    Date of Patent: March 25, 1980
    Assignee: AB Scaniainventor
    Inventors: Karl G. Tell, Arne E. Wall, Olle L. Siwersson