Patents by Inventor Heinz-Jurgen Engelke

Heinz-Jurgen Engelke 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).

  • Pressure fluid cylinder with optional anti-rotation feature
    Patent number: 6637316
    Abstract: A pressure fluid cylinder with anti-rotation feature, includes a cylinder tube of non-circular inner cross section and a piston which is sealingly received in the tube. The piston has a circular cross section and is connected at one end to a piston rod in coaxial relationship. In order to allow selective use of the pressure fluid cylinder with or without anti-rotation feature, an annular adapter is placed between the piston and the tube and has a circular inner surface area to complement a circular outer surface area of the piston so as to allow a relative rotation between the piston and the adapter. The adapter has a non-circular outer surface area to complement the non-circular inner surface area of the tube. Through insertion of a fastener in aligned boreholes of the adapter and the piston, the adapter and the piston are prevented from rotating relative to one another.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: October 28, 2003
    Assignee: Rexroth Mecman GmbH
    Inventors: Heinz-Jürgen Engelke, Norbert Fortmann, Thomas Liesenhoff, Jens Müller
  • Pressure fluid cylinder with optional anti-rotation feature
    Publication number: 20020162447
    Abstract: A pressure fluid cylinder with anti-rotation feature, includes a cylinder tube of non-circular inner cross section and a piston which is sealingly received in the tube. The piston has a circular cross section and is connected at one end to a piston rod in coaxial relationship. In order to allow selective use of the pressure fluid cylinder with or without anti-rotation feature, an annular adapter is placed between the piston and the tube and has a circular inner surface area to complement a circular outer surface area of the piston so as to allow a relative rotation between the piston and the adapter. The adapter has a non-circular outer surface area to complement the non-circular inner surface area of the tube. Through insertion of a fastener in aligned boreholes of the adapter and the piston, the adapter and the piston are prevented from rotating relative to one another.
    Type: Application
    Filed: April 24, 2002
    Publication date: November 7, 2002
    Applicant: REXROTH MECMAN GMBH
    Inventors: Heinz-Jurgen Engelke, Norbert Fortmann, Thomas Liesenhoff, Jens Muller