Patents by Inventor Ottmar Lehr

Ottmar Lehr 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: 9687899
    Abstract: The invention relates to a device for processing a workpiece, said device including the following features: a punch on one side of the workpiece, a die on the opposite side of the workpiece, and a conductive electric heating system for generating an electric current that flows through the workpiece starting from a component situated on one side of the workpiece outside of the punch to a component situated on the opposite side of the workpiece outside of the die.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: June 27, 2017
    Assignee: Allgaier Werke GmbH
    Inventors: Michael Wolf, Matthias Mihm, Alexander Müller, Ottmar Lehr
  • Publication number: 20160207093
    Abstract: A device for forming a sheet-metal blank, the device comprising: a press frame; a tool top part including an outer die and an inner die; a tool base part including a punch and a sheet-metal holder; at least one drive assigned to the tool top part and/or the tool base part; and an annular sheet-metal holder surrounding the punch and having a support face; wherein one drive is in each case assigned to the inner die on the one hand, and to the outer die and the sheet metal holder on the other hand, and the one drive displaces the inner die and the outer die at different speeds in the drawing direction. A method of forming a sheet-metal blank comprises using the device during a starting period, an intermediate phase, and a final phase where the movement and/or direction of the two dies vary.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 21, 2016
    Applicant: ALLGAIER WERK GmbH
    Inventors: Michael Wolf, Ottmar Lehr, Dieter Waidmann, Peter König, Klaus Leinmüller
  • Publication number: 20160144416
    Abstract: The invention relates to a device for processing a workpiece, said device including the following features: a punch on one side of the workpiece, a die on the opposite side of the workpiece, and a conductive electric heating system for generating an electric current that flows through the workpiece starting from a component situated on one side of the workpiece outside of the punch to a component situated on the opposite side of the workpiece outside of the die.
    Type: Application
    Filed: January 29, 2016
    Publication date: May 26, 2016
    Applicant: Allgaier Werke GmbH
    Inventors: Michael Wolf, Matthias Mihm, Alexander Müller, Ottmar Lehr
  • Patent number: 9289812
    Abstract: The invention relates to an apparatus, an installation and a method for machining a workpiece made of metal, such as steel, by a machining processes such as forming, pressing, drawing, compressing and cutting. The invention includes at least two tools and a drive associated with the tools for their movement and for carrying out the machining process. The drives are arranged in such a way that when travelling on trajectories the tools have different speeds over at least a part of their trajectories.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: March 22, 2016
    Assignee: Allgaier Werke GmbH
    Inventors: Peter König, Michael Wolf, Ottmar Lehr, Klaus Leinmüller, Dieter Waidmann
  • Publication number: 20140352390
    Abstract: The invention relates to an apparatus, an installation and a method for machining a workpiece made of metal, such as steel, by a machining processes such as forming, pressing, drawing, compressing and cutting. The invention includes at least two tools and a drive associated with the tools for their movement and for carrying out the machining process. The drives are arranged in such a way that when travelling on trajectories the tools have different speeds over at least a part of their trajectories.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Applicant: Allgaier Werke GmbH
    Inventors: Peter König, Michael Wolf, Ottmar Lehr, Klaus Leinmüller, Dieter Waidmann