Patents by Inventor Erwin Holder

Erwin Holder 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).

  • Bending machine for tubing, bar and the like
    Patent number: 6854311
    Abstract: A bending machine for the bending of tube, rod and bar shaped workpieces (24, 24a) includes a machine base unit (2), a collet (6) for mounting a workpiece, and a tool assembly (15) with at least one bending tool. The bending tool can be opened and closed in the transverse direction of the workpiece by the relative movement of tool components to form a workpiece holder. The tool assembly (15) is mounted on a swivel support (10) to rotate around a tool axis of rotation (16) extending axially of the workpiece, and the swivel support (10) is mounted on the machine base unit (2) to be rotatable around a swivel support axis of rotation (11) extending in the axial direction (12) of the workpiece. The swivel support axis of rotation (11) and the tool axis of rotation (16), and the tool axis of rotation (16) and the workpiece holder, are radially offset relative to one another.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: February 15, 2005
    Assignee: Trumpf Rohrtechnik GmbH + Co. KG
    Inventors: Frank Schmauder, Winfried Richter, Jürgen Wolf, Stephan Lausterer, Erwin Holder, Stefan Deuter, Rainer Hofmann
  • Bending machine for tubing, bar and the like
    Publication number: 20030213278
    Abstract: A bending machine for the bending of tube, rod and bar shaped workpieces (24, 24a) includes a machine base unit (2), a collet (6) for mounting a workpiece, and a tool assembly (15) with at least one bending tool. The bending tool can be opened and closed in the transverse direction of the workpiece by the relative movement of tool components to form a workpiece holder. The tool assembly (15) is mounted on a swivel support (10) to rotate around a tool axis of rotation (16) extending axially of the workpiece, and the swivel support (10) is mounted on the machine base unit (2) to be rotatable around a swivel support axis of rotation (11) extending in the axial direction (12) of the workpiece. The swivel support axis of rotation (11) and the tool axis of rotation (16), and the tool axis of rotation (16) and the workpiece holder, are radially offset relative to one another.
    Type: Application
    Filed: April 1, 2003
    Publication date: November 20, 2003
    Inventors: Frank Schmauder, Winfried Richter, Jurgen Wolf, Stephan Lausterer, Erwin Holder, Stefan Deuter, Rainer Hofmann