Patents by Inventor Ulrich Arndt

Ulrich Arndt 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: 6370021
    Abstract: An operating stand for a tablet press device which comprises a process computer with a screen and an input keyboard and where appropriate a printer, wherein the operating lectern is mounted height-adjustable on a traversable base and between the base and the operating lectern there is arranged a linear adjusting drive with a linear guide.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: April 9, 2002
    Assignee: Wilhelm Fette GmbH
    Inventors: Jürgen Hinzpeter, Ulrich Zeuschner, Elke Wittenberg, Peter Lüneburg, Hans-Joachim Pierags, Nils Petersen, Ulrich Arndt, Hans Wolf
  • Patent number: 6361302
    Abstract: A rotary tabletting machine with a housing, with a matrix disk in the housing, which in an upper and a lower receiving section guides the upper and lower punch, with an upper and lower cam carrier ring rotationally rigid relative to the housing, for control of the upper and lower punch and with an upright drive shaft, below the matrix disk, driven by a rotational drive and releasably connectable to the matrix disk, wherein the matrix disk and the cam carrier rings with the upper and lower punch after release from the connections as an assembly may be commonly removed from the drive shaft, whereby the cam carrier rings laterally in each case are connected to at least one arm and the arms via an upright connection section are rigidly connected to one another and the connection section is releasably couplable to the housing such that it is secured against rotation.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: March 26, 2002
    Assignee: Wilhelm Fette GmbH
    Inventors: Jürgen Hinzpeter, Ulrich Zeuschner, Hans-Joachim Pierags, Nils Petersen, Peter Lüneburg, Elke Wittenberg, Ulrich Arndt, Hans Wolf
  • Patent number: 6361305
    Abstract: A rotary tablet press, with a die plate rotatably mounted in a housing, which comprises guides for the upper and lower punch, whose position is controlled by cam disks rigid with the housing, and with an upright drive shaft which is arranged below the die plate and which can be releasably coupled to the die plate, wherein the die plate is formed such that after releasing from the drive shaft and a slight raising it may be moved out laterally, wherein at the ends, facing one another, of the die plate and drive shaft there is provided a quick locking whose parts are arranged in cavities of the die plate and drive shaft and which may be actuated by an actuation rod which is movably mounted in an axial channel of the drive shaft and is actuatable by an actuation device for the selective tensioning or releasing of the die plate and drive shaft.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: March 26, 2002
    Assignee: Wilhelm Fette GmbH
    Inventors: Jürgen Hinzpeter, Ulrich Zeuschner, Hans-Joachim Pierags, Nils Petersen, Peter Lüneburg, Elke Wittenberg, Ulrich Arndt, Hans Wolf
  • Publication number: 20010046527
    Abstract: A tablet rotary compression press for the manufacture of multi-layered tablets, comprising a rotationally driven rotor which has a die-plate with die-plate bores and top and bottom rams aligned towards the die-plate bores which are guided in ram guides of the rotor and are axially actuated by stationary control cams, an insertion device for a portion of the tablet-forming compacts which has two or more arms guided in a radially movable manner at the each end of which a compact is held and can be aligned towards a die-plate bore, wherein said rotor has circumferentially included thereon a support ring or support surfaces on which the compacts can be deposited in the positions approximately aligned towards the die-plate bores, the radial arms are disposed in the rotor, rotate therewith, and have radially movable gripping portions adapted to be radially moved to each other, and the rotor has provided therein a stationary guide with first and second guide cams the cam followers of which are interacted with by the
    Type: Application
    Filed: May 10, 2001
    Publication date: November 29, 2001
    Inventors: Ulrich Arndt, Thomas Heinrich, Jurgen Hinzpeter, Thomas Jacob, Peter Luneburg, Gert Stellmach, 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
  • Patent number: 6181370
    Abstract: A method for adjusting a stamp relative to a matrix on sinter-pressing, characterized by the following method steps: the stamp and the matrix are so moved towards one another that the stamp is located in a position shortly before the immersing into the bore of the matrix; the region of the stamp is illuminated; on the side distant to the stamp there is positioned an optical recorder which acquires the matrix bore; the picture recorded by the recorder is imaged on a monitor; in accordance with the imaging on the monitor the stamp relative to the matrix is so adjusted transversely to its axis that a uniform gap between the stamp and the matrix bore over the circumference is obtained; and subsequently the stamp is finally fixed in its receiver.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: January 30, 2001
    Assignee: Wilhelm Fette GmbH
    Inventors: J{umlaut over (u)}rgen Hinzpeter, Ulrich Zeuschner, Elke Wittenberg, Peter L{umlaut over (u)}neburg, Hans-Joachim Pierags, Ulrich Arndt, Stephan Mallon, Klaus-Peter R{umlaut over (u)}&bgr;mann
  • Patent number: 5643630
    Abstract: A method of depositing dosed quantities of pulverized lubricants or parting compounds on the materials contacting surfaces of pressing tools of tabletting machines, according to which the parting compound uniformly distributed by a gaseous transport medium is blown on the surfaces, said parting compound during operation of said tabletting machine being continuously blown on the used surfaces and being removed from the areas adjacent to the used surfaces by suction continuously.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: July 1, 1997
    Assignee: Wilhelm Fette GmbH
    Inventors: Jurgen Hinzpeter, Ulrich Zeuschner, Hans-Joachim Pierags, Peter Luneburg, Elke Wittenberg, Ulrich Arndt
  • Patent number: 5248542
    Abstract: A sealing strip for a housing of a pelletizing machine has a one-piece sealing body with a central web with an upper side having two upper edges and a lower side having two lower edges, two sealing lips extending from the upper edges of the upper side of the central web at an angle relative to one another, and a clamping strip extending from a center of the lower side of the central web and provided with lateral webs.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: September 28, 1993
    Assignee: Firma Wilhelm Fette GmbH
    Inventors: Jurgen Hinzpeter, Ulrich Zeuschner, Kurt Marquardt, Peter Luneburg, Hans-Joachim Pierags, Ulrich Arndt, Gunter Harten
  • Patent number: 5151280
    Abstract: A rotary pelletizing machine has a rotatable matrix disc, a plurality of vertically adjustable pressing rollers which control position of the upper and lower plungers, a drive for a height adjustment of the rollers, a housing accommodating the drive, and a bearing block supporting the pressing roller and releasably connected with the housing.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: September 29, 1992
    Assignee: Firma Wilhelm Fette GmbH
    Inventors: Ulrich Arndt, Peter Luneburg, Kurt Marquardt, Hans-Joachim Pierags, Ulrich Zeuschner
  • Patent number: 5148740
    Abstract: A rotary pelletizing machine comprises a rotatable matrix disc, a plurality of upper plungers and lower plungers guided in the matrix disc, and an element for holding the lower plungers from falling out during a dismounting of the matrix disc, the holding element including a braking ring arranged in the matrix disc and pressing radially against the lower plungers so as to hold the lower plungers from falling out.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: September 22, 1992
    Assignee: Firma Wilhelm Fette GmbH
    Inventors: Ulrich Arndt, Peter Luneburg, Kurt Marquardt, Hans-Joachim Pierags, Ulrich Zeuschner, Gunter Harten
  • Patent number: 5071336
    Abstract: A rotary pelleting machine comprises a housing, a drive shaft, a matrix disc connected with the drive shaft and guiding upper plungers and lower plungers, a unit for controlling position of the plungers during rotation of the matrix disc. The unit includes a cam ring provided for controlling the upper plungers. The cam ring is supported rotatably relative to the housing and the drive shaft. Also a unit for measuring a torque of the cam disc is provided.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: December 10, 1991
    Assignee: Firma Wilhelm Fette GmbH
    Inventors: Jurgen Hinzpeter, Ulrich Zeuschner, Hans-Joachim Pierags, Kurt Marquardt, Ulrich Arndt, Gunter Harten