Patents by Inventor Martin Ziehl

Martin Ziehl 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).

  • Flange connection for pipe
    Patent number: 7726702
    Abstract: Assembly for connecting a pipe having a flanged end in fluid communication with an opposing part. The assembly includes an insert received coaxially within the pipe end and having a forward end face extending axially beyond the pipe end, a clamp ring received coaxially over the pipe end, and a flange piece which is fastenable to the opposing as received coaxially over the clamp ring. As the flange piece is fastened to the opposing part, the forward end face of the insert is urged into a sealable engagement against a confronting surface of the opposing part.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: June 1, 2010
    Assignee: Parker Hannifin GmbH & Co. AG
    Inventors: Dieter Schulze, Peter Rutz, Norbert Steinmeyer, Martin Ziehl, Andreas Udhofer
  • FLANGE CONNECTION FOR PIPE
    Publication number: 20090008932
    Abstract: Assembly for connecting a pipe having a flanged end in fluid communication with an opposing part. The assembly includes an insert received coaxially within the pipe end and having a forward end face extending axially beyond the pipe end, a clamp ring received coaxially over the pipe end, and a flange piece which is fastenable to the opposing as received coaxially over the clamp ring. As the flange piece is fastened to the opposing part, the forward end face of the insert is urged into a sealable engagement against a confronting surface of the opposing part.
    Type: Application
    Filed: August 1, 2008
    Publication date: January 8, 2009
    Inventors: Dieter Schulze, Peter Rutz, Norbert Steinmeyer, Martin Ziehl, Andreas Udhofer
  • Device for forming an end area of a workpiece
    Patent number: 6708548
    Abstract: The invention relates to a device for forming an end area of a workpiece (2), especially for cold press-forming an end area of a pipe, comprising two force transmitting elements (7, 9) which are guided in a common housing (3). The device is characterised in that a first pressure chamber (26) is located between the two force transmission elements (7, 9) and in that a second pressure chamber (28) is allocated to the second force transmission element (9). When the first force transmission element (7) is in the bracing position, the second force transmission element (9) can be displaced in relation to the first force transmission element (7) in order to form the workpiece.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 23, 2004
    Assignee: Parker-Hannifin GmbH
    Inventors: Dieter Ehrke, Udo Hunkenschroeder, Frank-Stefan Runte, Martin Ziehl
  • Device for forming an end area of a workpiece
    Publication number: 20030046969
    Abstract: The invention relates to a device for forming an end area of a workpiece (2), especially for cold press-forming an end area of a pipe, comprising two force transmitting elements (7, 9) which are guided in a common housing (3). The device is characterised in that a first pressure chamber (26) is located between the two force transmission elements (7, 9) and in that a second pressure chamber (28) is allocated to the second force transmission element (9). When the first force transmission element (7) is in the bracing position, the second force transmission element (9) can be displaced in relation to the first force transmission element (7) in order to form the workpiece.
    Type: Application
    Filed: September 30, 2002
    Publication date: March 13, 2003
    Inventors: Dieter Ehrke, Udo Hunkenschroeder, Frank-Stefan Runte, Martin Ziehl