Patents by Inventor Helmut Bommrowitz

Helmut Bommrowitz 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).

  • Patent number: 7654814
    Abstract: Rotary press comprising a rotor rotatably driven about a vertical axis, said rotor exhibiting a die plate and upper and lower punches which are vertically guided in guides of the rotor working together with die holes in a die plate, at least one press station which exhibits an upper and a lower pressure passed by the punches and through which the punches are moved towards the die hole in order to compress the material in the die hole, characterized in that the rotor is provided with means which act upon compacts or parts thereof which adhere to the pressing surface or which means eliminate or prevent an adherence of a compact or parts thereof to the pressing surface of the upper punch, respectively, during the return stroke.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: February 2, 2010
    Assignee: Fette GmbH
    Inventors: Jürgen Schikowski, Ingo Schmidt, Thorsten Ehrich, Helmut Bommrowitz
  • Publication number: 20060083804
    Abstract: Rotary press comprising a rotor rotatably driven about a vertical axis, said rotor exhibiting a die plate and upper and lower punches which are vertically guided in guides of the rotor working together with die holes in a die plate, at least one press station which exhibits an upper an a lower pressure passed by the punches and through which the punches are moved towards the die hole in order to compress the material in the die hole, characterized in that the rotor is provided with means which act upon compacts or parts thereof which adhere to the pressing surface or which means eliminate or prevent an adherence of a compact or parts thereof to the pressing surface of the upper punch, respectively, during the return stroke.
    Type: Application
    Filed: October 19, 2005
    Publication date: April 20, 2006
    Inventors: Jurgen Schikowski, Ingo Schmidt, Thorsten Ehrich, Helmut Bommrowitz
  • Patent number: 6749416
    Abstract: A die for a rotary compression press, comprising a die holder axially supported in a guide bore and a die insert which is seated in the end-side bore of the die holder via a trunnion-shaped projection and is adapted to be mounted via releasable fastening means, wherein the projection is helically guided in the bore between axially spaced stops and is biased by a spring towards the associated front-end face of the die holder.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: June 15, 2004
    Assignee: Wilhelm Fette GmbH
    Inventors: Ulrich Arndt, Andreas Arning, Heinrich Behrmann, Helmut Bommrowitz, Thomas Heinrich, Jürgen Hinzpeter, Thomas Jacob, Peter Lüneburg, Nils Petersen, Hans-Joachim Pierags, Jürgen Schikowski, Elke Wittenberg, Hans Wolf, Ulrich Zeuschner
  • Patent number: 6595767
    Abstract: A rotary compression press for cylindrical compacts, especially tablets, comprising a rotatably driven rotor including a die-plate and an upper and a lower ram guide for upper and lower rams cooperating with the die bores, and a pressure station with an upper and a lower pressure roller for applying a pressing power to the rams wherein the rams circumferentially have an annular tooth system which cooperates with an opposed tooth system in the area of a pressure station for the rams for the purpose of rotating the rams in the die bores thereof, characterized in that the opposed tooth system is defined by a rotatably supported gear which is acted on by a preset braking torque with the braking torque being chosen so as to be smaller than the torque of the ram when under a maximum pressing power.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 22, 2003
    Assignee: Wilhelm Fette GmbH
    Inventors: Jürgen Hinzpeter, Ulrich Arndt, Heinrich Behrmann, Helmut Bommrowitz, Thomas Heinrich, Thomas Jacob, Peter Lüneburg, Nils Petersen, Hans-Joachim Pierags, Wolfgang Röhrs, Elke Wittenberg, Hans Wolf, Ulrich Zeuschner
  • Publication number: 20010041198
    Abstract: A die for a rotary compression press, comprising a die holder axially supported in a guide bore and a die insert which is seated in the end-side bore of the die holder via a trunnion-shaped projection and is adapted to be mounted via releasable fastening means, wherein the projection is helically guided in the bore between axially spaced stops and is biased by a spring towards the associated front-end face of the die holder.
    Type: Application
    Filed: January 17, 2001
    Publication date: November 15, 2001
    Inventors: Ulrich Arndt, Andreas Arning, Heinrich Behrmann, Helmut Bommrowitz, Thomas Heinrich, Jurgen Hinzpeter, Thomas Jacob, Peter Luneburg, Nils Petersen, Hans-Joachim Pierags, Jurgen Schikowski, Elke Wittenberg, Hans Wolf, Ulrich Zeuschner