Patents by Inventor Uwe Boecker

Uwe Boecker 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).

  • Patent number: 8245823
    Abstract: Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston is mounted stationarily on the piston rod while a second piston that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to a force of at least one support spring. The spring assembly is provided with at least one spring plate on which the spring assembly rests. The second piston is retained by a fixing sleeve which supports the at least one spring plate. The structural unit encompassing the fixing sleeve and the at least one spring plate is fitted with an axially effective separating joint for a locking connection inside the structural unit. The entire structural unit can be axially displaced towards the at least one support spring.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: August 21, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Bernd Zeissner, Andreas Foerster, Frank Gundermann, Steffen Heyn, Anton Krawczyk, Uwe Boecker, Thomas Thein, Wolfgang Breun, Herbert Bies, Holger Beyer, Ludwig Gampl, Heinz-Joachim Gilsdorf, Klaus Sauer
  • Publication number: 20090127039
    Abstract: Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston (7) is mounted stationarily on the piston rod while a second piston (23) that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to the force of at least one support spring. The spring assembly is provided with at least one spring plate (39, 41) on which the spring assembly (33, 35) rests. The second piston (23) forms a structural unit along with a fixing sleeve (37) and the at least one spring plate for the spring assembly. The at least one spring plate is mounted in an axially movable manner relative to the fixing sleeve (37) and can be fixed in the desired axial position in order to adjust the bias of the spring assembly.
    Type: Application
    Filed: August 18, 2006
    Publication date: May 21, 2009
    Applicant: ZF FRIEDCHSHAFEN AG
    Inventors: Bernd Zeissner, Andreas Foerster, Frank Gundermann, Steffen Heyn, Anton Krawczyk, Uwe Boecker, Thomas Thein, Wolfgang Breun, Herbert Bies, Holger Beyer, Ludwig Gampl, Heinz-Joachim Gilsdorf, Klaus Sauer
  • Publication number: 20090038898
    Abstract: Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston is mounted stationarily on the piston rod while a second piston that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to a force of at least one support spring. The spring assembly is provided with at least one spring plate on which the spring assembly rests. The second piston is retained by a fixing sleeve which supports the at least one spring plate. The structural unit encompassing the fixing sleeve and the at least one spring plate is fitted with an axially effective separating joint for a locking connection inside the structural unit. The entire structural unit can be axially displaced towards the at least one support spring.
    Type: Application
    Filed: August 18, 2006
    Publication date: February 12, 2009
    Applicant: ZF Friedrichshafen AG
    Inventors: Bernd Zeissner, Andreas Foerster, Frank Gundermann, Steffen Heyn, Anton Krawczyk, Uwe Boecker, Thomas Thein, Wolfgang Breun, Herbert Bies, Holger Beyer, Ludwig Gampl, Heinz-Joachim Gilsdorf, Klaus Sauer