Patents by Inventor Jurgen Schikowski
Jurgen Schikowski 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).
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Patent number: 8137089Abstract: A punch for a rotary press, which has a shaft and a head, wherein the head has an upper mirror surface, a cylinder surface and a rounded transition area between the mirror surface and cylinder surface with a first and a second radius, wherein the first radius is larger than the second radius and wherein the punch head also has a preferably conical transition area from the cylinder surface to the shaft, wherein the diameter of the head is less than 25 mm and the first radius of the transition area is selected such that its height is less than half the height of the cylinder surface.Type: GrantFiled: April 2, 2009Date of Patent: March 20, 2012Assignee: Fette GmbHInventors: Jürgen Schikowski, Friedrich Meissner, Jan Naeve, Harald Römer, Reinhard Wagner
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Patent number: 7654814Abstract: 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: GrantFiled: October 19, 2005Date of Patent: February 2, 2010Assignee: Fette GmbHInventors: Jürgen Schikowski, Ingo Schmidt, Thorsten Ehrich, Helmut Bommrowitz
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Publication number: 20090269433Abstract: A punch for a rotary press, which has a shaft and a head, wherein the head has an upper mirror surface, a cylinder surface and a rounded transition area between the mirror surface and cylinder surface with a first and a second radius, wherein the first radius is larger than the second radius and wherein the punch head also has a preferably conical transition area from the cylinder surface to the shaft, wherein the diameter of the head is less than 25 mm and the first radius of the transition area is selected such that its height is less than half the height of the cylinder surface.Type: ApplicationFiled: April 2, 2009Publication date: October 29, 2009Applicant: Fette GmbHInventors: Jurgen Schikowski, Friedrich Meissner, Jan Naeve, Harald Romer, Reinhard Wagner
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Publication number: 20060083804Abstract: 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: ApplicationFiled: October 19, 2005Publication date: April 20, 2006Inventors: Jurgen Schikowski, Ingo Schmidt, Thorsten Ehrich, Helmut Bommrowitz
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Patent number: 6749416Abstract: 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: GrantFiled: January 17, 2001Date of Patent: June 15, 2004Assignee: Wilhelm Fette GmbHInventors: 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
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Patent number: 6361306Abstract: A tool arrangement for the manufacture of ring-shaped compacts using a rotary compression press wherein the rotary compression press has a rotatably driven die-plate having die holes in which die inserts are mounted, and upper and lower rams aligned towards the die inserts and rotating together therewith, which are moved by control portions towards each other or away from each other and wherein the bottom rams have a coaxial bore open to the operating end in which a central pin is disposed which is axially located relative to the die-plate by a transverse pin wherein the transverse pin extends through an axial slot of the lower ram, wherein the transverse pin is located in a ring which forms part of a guide bore for the lower ram which is formed in a radially outwardly facing projection of the die-plate, two bracket-shaped retaining clips are disposed on opposed sides of the lower ram a longer leg of which abuts against the underside of the ring and a short, second leg of which is bent over the projection, aType: GrantFiled: June 6, 2000Date of Patent: March 26, 2002Assignee: Wilhelm Fette GmbHInventors: Jürgen Hinzpeter, Ulrich Zeuschner, Christian Medicus, Christian Hoffmann, Jürgen Schikowski, Andreas Arning, Hans-Wilhelm Christiansen
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Publication number: 20010041198Abstract: 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: ApplicationFiled: January 17, 2001Publication date: November 15, 2001Inventors: 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
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Patent number: 5607704Abstract: A press ram for use in a pelleting machine for making tablets including a rod-shaped ram holder, having at one end a head for engagement with cams and at its other end an axial bore, a ram insert, having at one end a pressing portion shaped in conformity with the profile of a tablet and at another end a cylindrical shaft, which is substantially matingly received in the bore of the ram holder, a radial shoulder of the ram insert thereby engaging the facing end of the ram holder, and a mechanism for releasably holding the ram insert within the ram holder.Type: GrantFiled: May 26, 1995Date of Patent: March 4, 1997Assignee: Wilhelm Fette GmbHInventors: Rudiger Schlierenkamper, Jurgen Schikowski