Patents by Inventor Stefan Hildner

Stefan Hildner 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).

  • Publication number: 20180283485
    Abstract: A fluid damper comprises a housing having a working chamber, a damping fluid disposed in the working chamber, a piston unit arranged in the working chamber, the piston unit comprising a piston rod, a piston secured to the piston rod in such a way as to divide the working chamber in a first working chamber part and a second working chamber part, at least one flow duct interconnecting the first working chamber part and the second working chamber part, at least one bypass duct interconnecting the first working chamber part and the second working chamber part, an overload valve that blocks a fluid flow through the bypass duct in a blocking position and is arranged in a release position as soon as a minimum fluid pressure is reached, wherein in said release position, a fluid flow through the bypass duct is possible.
    Type: Application
    Filed: March 22, 2018
    Publication date: October 4, 2018
    Inventors: Marc-Pascal BOßLE, Ludwig FELLNER, Stefan HILDNER, Helmut KASTNER, Thilo SLABY, Herbert WOLF
  • Patent number: 7204035
    Abstract: A piston rod is guided with freedom of axial movement in a cylinder, where the position of the piston rod is detected by a first position-measuring device, which travels along with the piston rod, and by a second position-measuring device on the cylinder side. The two position-measuring devices are radially adjacent and axially parallel, and are supported in such a way that they cannot rotate with respect to each other.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: April 17, 2007
    Assignee: ZF Friedrichshafen AG
    Inventors: Stefan Hildner, Achim Thoma, Wolfgang Kolb
  • Publication number: 20050066536
    Abstract: A piston rod is guided with freedom of axial movement in a cylinder, where the position of the piston rod is detected by a first position-measuring device, which travels along with the piston rod, and by a second position-measuring device on the cylinder side. The two position-measuring devices are radially adjacent and axially parallel, and are supported in such a way that they cannot rotate with respect to each other.
    Type: Application
    Filed: August 18, 2004
    Publication date: March 31, 2005
    Inventors: Stefan Hildner, Achim Thoma, Wolfgang Kolb