Patents by Inventor Frank Partosch

Frank Partosch 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).

  • Piston-cylinder unit with piston rod protector
    Patent number: 8418821
    Abstract: Piston-cylinder unit includes a piston rod guided with freedom of axial movement in a cylinder, where at least part of the piston rod is enclosed by a piston rod protector, which is designed with at least limited axial elasticity. At least one retaining surface of the piston rod protector enters into a positive connection with at least one stop surface on the cylinder side, and an auxiliary assembly bevel allows the piston rod protector to buckle over a certain stroke range of the piston rod during the installation of the protector, so that the retaining surface snap-locks onto the stop surface on the cylinder side.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: April 16, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Robert Henneberg, Frank Partosch, Simon Strack, Andreas Zietsch
  • PISTON-CYLINDER UNIT WITH PISTON ROD PROTECTOR
    Publication number: 20090145707
    Abstract: Piston-cylinder unit includes a piston rod guided with freedom of axial movement in a cylinder, where at least part of the piston rod is enclosed by a piston rod protector, which is designed with at least limited axial elasticity. At least one retaining surface of the piston rod protector enters into a positive connection with at least one stop surface on the cylinder side, and an auxiliary assembly bevel allows the piston rod protector to buckle over a certain stroke range of the piston rod during the installation of the protector, so that the retaining surface snap-locks onto the stop surface on the cylinder side.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 11, 2009
    Applicant: ZF Friedrichshafen AG
    Inventors: Robert Henneberg, Frank Partosch, Simon Strack, Andreas Zietsch