Patents by Inventor Stefan Luedemann

Stefan Luedemann 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).

  • Publication number: 20140083248
    Abstract: The invention relates to a coding element for equipping at least one cam carrier of a rotor of a rotary press with at least one control cam element, wherein at least one coding element is provided, wherein the at least one coding element comprises fastening means by which it can be fastened to the rotor or a component connected thereto, wherein the at least one coding element has coding means by which the position of the at least one control cam element on the cam carrier is clearly specified. In addition, the invention relates to a corresponding method.
    Type: Application
    Filed: April 19, 2012
    Publication date: March 27, 2014
    Applicant: FETTE COMPACTING GMBH
    Inventors: Stefan Lüdemann, Peter Lüneburg, Daniel Malick
  • Patent number: 8525050
    Abstract: The invention is related to a method for testing multilayer tablets in a multiple rotary press, in which die holes of a circulating die plate are successively filled with tablet material of different layers in consecutive filling devices, and the tablet material is compressed layer after layer to pressed articles having n layers by means of synchronously circulating compression punches in compression stations respectively associated to the filling devices, and the pressed articles are subsequently ejected and unloaded in a unloading station.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: September 3, 2013
    Assignee: Fette GmbH
    Inventors: Jan Naeve, Stefan Luedemann
  • Patent number: 8453565
    Abstract: A pressing station in a rotary press having a bearing component for a compression roll that can be adjusted vertically in height along a guide attached to the frame of the rotary press, a first adjustment drive fastened to the frame, which is coupled via an adjustment drive to the bearing component for height adjustment of the bearing component, wherein a shaft or axle for the compression roll or the bearing component or a part of these is coupled to a second adjustment drive in such a way that the compression roll can be adjusted in its height independently from the first adjustment drive.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 4, 2013
    Assignee: Fette GmbH
    Inventors: Stefan Luedemann, Kurt Marquardt, Jan Naeve
  • Publication number: 20110223277
    Abstract: A die plate for the rotor of a rotary tablet press comprising a plurality of die holes, with dies provided therein, arranged distributed in the circumferential direction of the die plate, and between every two adjacent die holes radially running bores, in each of which a fastening device is disposed for fastening the dies, characterized in that at least one fastening device comprises two clamping elements disposed opposite each other in a radial bore, and a tensioning device, wherein the clamping elements can be tensioned against each other in the radial direction using the tensioning device, wherein the clamping elements are pressed against the dies adjacent to the radial bore.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 15, 2011
    Applicant: FETTE COMPACTING GMBH
    Inventors: Friedrich Meissner, Stefan Luedemann
  • Publication number: 20110000272
    Abstract: A compression punch for a rotary press, with a shaft, a punch head disposed at one shaft end and a compression zone disposed at the other shaft end, wherein the punch head features an upper mirror surface, an outer cylinder surface and a curved transition zone between the mirror surface and the cylinder surface, wherein the mirror surface and the transition zone form a three-dimensional surface, whose course in at least one radial direction can be described by a mathematical function whose second derivative is continuous.
    Type: Application
    Filed: June 22, 2010
    Publication date: January 6, 2011
    Applicant: FETTE GMBH
    Inventors: Friedrich MEISSNER, Stefan LUEDEMANN, Jan NAEVE
  • Publication number: 20100251909
    Abstract: A pressing station in a rotary press having a bearing component for a compression roll that can be adjusted vertically in height along a guide attached to the frame of the rotary press, a first adjustment drive fastened to the frame, which is coupled via an adjustment drive to the bearing component for height adjustment of the bearing component, wherein a shaft or axle for the compression roll or the bearing component or a part of these is coupled to a second adjustment drive in such a way that the compression roll can be adjusted in its height independently from the first adjustment drive.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 7, 2010
    Applicant: Fette GmbH
    Inventors: Stefan Luedemann, Kurt Marquardt, Jan Naeve
  • Publication number: 20100229746
    Abstract: A method for dedusting a suction system for rotary presses, wherein the cleaning liquid is guided into the suction system, and wherein the suction system is closed in the region of the press room of the press, and at least a part of the suction system is flooded with cleaning liquid, and the cleaning liquid is subsequently drained into the press room.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 16, 2010
    Applicant: Fette GmbH
    Inventors: Stefan Luedemann, Hans Wolf
  • Publication number: 20100059292
    Abstract: The invention is related to a method for testing multilayer tablets in a multiple rotary press, in which die holes of a circulating die plate are successively filled with tablet material of different layers in consecutive filling devices, and the tablet material is compressed layer after layer to pressed articles having n layers by means of synchronously circulating compression punches in compression stations respectively associated to the filling devices, and the pressed articles are subsequently ejected and unloaded in a unloading station, wherein in a testing procedure, pressed articles having in layers are unloaded in an unloading station after the compression and are fed to a testing station, wherein holds 1<=m<n.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 11, 2010
    Applicant: Fette GmbH
    Inventors: Jan Naeve, Stefan Luedemann