Patents by Inventor Jürgen FENZEL

Jürgen FENZEL 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).

  • Tool for chipless production or finishing of a thread, method for producing the tool and method for producing a thread
    Patent number: 11571760
    Abstract: A tool for the chipless production of a thread in a workpiece comprises at least one shaping region which can be rotated about a tool axis (A) for the chipless production or finishing of the thread. The shaping region comprises a plurality of pressing lobes projecting radially outwardly from the tool axis (A) for producing the thread by pressing the pressing lobes into the workpiece surface. The pressing lobes are successively arranged along a forming curve which substantially spirals around the tool axis (A), and the pitch of the forming curve essentially corresponds to the pitch of the thread to be produced or reworked. The forming curve has a helix angle (a), and a profile of at least one pressing lobe is designed in such a way that a thread produced in an axial section containing the tool axis is at least in sections round-arched or ogival.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: February 7, 2023
    Assignee: EMUGE-WERK RICHARD GLIMPEL GMBH & CO. KG, FABRIK FÜR PRÄZISIONSWERKZEUGE
    Inventors: Dietmar Hechtle, Marko Übler, Jürgen Fenzel
  • TOOL FOR CHIPLESS PRODUCTION OR FINISHING OF A THREAD, METHOD FOR PRODUCING THE TOOL AND METHOD FOR PRODUCING A THREAD
    Publication number: 20210138567
    Abstract: A tool for the chipless production of a thread in a workpiece comprises at least one shaping region which can be rotated about a tool axis (A) for the chipless production or finishing of the thread. The shaping region comprises a plurality of pressing lobes projecting radially outwardly from the tool axis (A) for producing the thread by pressing the pressing lobes into the workpiece surface. The pressing lobes are successively arranged along a forming curve which substantially spirals around the tool axis (A), and the pitch of the forming curve essentially corresponds to the pitch of the thread to be produced or reworked. The forming curve has a helix angle (a), and a profile of at least one pressing lobe is designed in such a way that a thread produced in an axial section containing the tool axis is at least in sections round-arched or ogival.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 13, 2021
    Inventors: Dietmar HECHTLE, Marko ÜBLER, Jürgen FENZEL