Patents by Inventor Friedemann Roether

Friedemann Roether 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 forming a layer of tobacco particles
    Patent number: 5558199
    Abstract: An apparatus for manipulating a multilayer stream of tobacco particles with randomly intermixed foreign particles has a vibratory conveyor which advances the stream toward and discharges successive increments of the stream onto the upper reach of an endless belt or chain serving to advance the increments at a speed exceeding the speed of advancement of the stream by the vibratory conveyor. The endless belt or chain discharges a single layer of tobaco particles and foreign particles, and such single layer is caused to move past a segregating unit which detects and expels foreign particles therefrom.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: September 24, 1996
    Assignee: Hauni Maschinenbau Aktiengesellschaft
    Inventors: Friedemann Roether, Heiko Niehues, Uwe Leckband, Harry Drewes, Horst-Udo Christ, Hans Dierken