Patents by Inventor Andreas Groth

Andreas Groth 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: 7351048
    Abstract: Powder press for the production of pressed articles of powder-shaped pressing material, having the following characteristics: a female mould plate with a least two female moulds or one female mould with at least two female die bores, at least two upper plungers, which co-operate with the female moulds and the female die bores, respectively, hydraulic cylinder for the upper plungers at least two bottom plungers, which co-operate with the female moulds and the female die bores, respectively hydraulic cylinders for the bottom plungers at least one position sensor for the upper plungers, and at least one position sensor for the bottom plungers force sensors for the individual hydraulic cylinders and a controlling means for the hydraulic cylinder or the hydraulic cylinders for the upper plungers and each one controlling means for the hydraulic cylinders for the bottom plungers.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: April 1, 2008
    Assignee: Fette GmbH
    Inventors: Jurgen Hinzpeter, Ingo Schmidt, Andreas Groth, Andreas Teetzen, Thomas Pannewitz, Holger Behns
  • Publication number: 20080020082
    Abstract: Press for producing pressed parts from powdered material with a die which may be clamped to a die table arranged in a press frame, in which a mould cavity is configured with a recess, and at least one upper and lower punch which cooperate with the mould cavity, the mould cavity being defined by at least one slider, transverse press punch or a movable part of the die, which may be displaced transversely to the vertical axis of the upper and lower punch (main pressing axis), and adjusting drives for the upper and lower punch and the slider and/or the displaceable die part attached in the press frame, characterised in that a sensor measures actual conditions of the adjusting drive for the slider, transverse press punch or the displaceable die part, the actual conditions being compared in a control device with a desired value and the control device actuating the adjusting drive for a slider, the transverse press punch or the displaceable die part via the energy supply to the adjusting drive according to the diffe
    Type: Application
    Filed: April 18, 2007
    Publication date: January 24, 2008
    Inventors: Martin Plucinski, Thomas Pannewitz, Udo Baltruschat, Carsten Jordt, Andreas Groth, Andreas Teetzen, Harald Romer, Jan Naeve, Stephan Mallon
  • Publication number: 20070096351
    Abstract: Method for determining a reference for a powder press, which comprises a die plate for attaching a die and an upper adaptor plate which may be actuated by a drive which is hydraulic, mechanical, electric or the like for attaching an upper punch, a lower adaptor plate which may be actuated by a hydraulic drive for attaching a lower punch or the die plate and at least one distance measuring system for the upper and lower punch and/or the die plate with the following steps: a reference die and at least one reference punch are made, the reference die is attached to the die plate, by an optical measuring device usefully arranged on a base plate and/or die plate, the position of the upper edge of the reference die is measured and the position value stored, the reference die is removed, the adaptor plate with the reference punch previously attached therein, is moved in the direction of the die until the lower edge of the reference punch has reached the stored position of the upper edge of the reference die, the sum
    Type: Application
    Filed: October 24, 2006
    Publication date: May 3, 2007
    Applicant: Fette GmbH
    Inventors: Thomas Pannewitz, Martin Plucinski, Andreas Groth, Andreas Teetzen
  • Publication number: 20050186300
    Abstract: Powder press for the production of pressed articles of powder-shaped pressing material, having the following characteristics: a female mould plate with a least two female moulds or one female mould with at least two female die bores, at least two upper plungers, which co-operate with the female moulds and the female die bores, respectively, hydraulic cylinder for the upper plungers at least two bottom plungers, which co-operate with the female moulds and the female die bores, respectively hydraulic cylinders for the bottom plungers at least one position sensor for the upper plungers, and at least one position sensor for the bottom plungers force sensors for the individual hydraulic cylinders and a controlling means for the hydraulic cylinder or the hydraulic cylinders for the upper plungers and each one controlling means for the hydraulic cylinders for the bottom plungers.
    Type: Application
    Filed: February 16, 2005
    Publication date: August 25, 2005
    Inventors: Jurgen Hinzpeter, Ingo Schmidt, Andreas Groth, Andreas Teetzen, Thomas Pannewitz, Holger Behns
  • Publication number: 20030180408
    Abstract: Path-measuring system for a powder press which has at least one top and one bottom stamping die, which co-operate with a mould of a mould plate and are each one actuated by a hydraulic cylinder, a laterally projecting index arm on the top and the bottom stamping die, which co-operates with an assigned vertical measuring ruler, and the measurement results are transmitted to a machine computer, characterised in that at least two index arms on opposing sides on at least the top and the bottom stamping die co-operate with a measuring ruler, and the machine computer compensates an incorrect measurement value on one measuring ruler by the second measurement value on the other measuring ruler.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 25, 2003
    Inventors: Jurgen Hinzpeter, Ingo Schmidt, Andreas Groth, Andreas Teetzen, Thomas Pannewitz, Udo Baltruschat, Thorsten Ehrich