Patents by Inventor Lothar Callies

Lothar Callies 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).

  • Damping valve comprising a pressure relief valve
    Patent number: 10100895
    Abstract: An adjustable damping valve (12) includes a pressure space (22c) for controlling the damping valve (12), which pressure space (22c) is arranged inside the damping valve (12) and is connected to a further space (20) via at least one choke orifice (30) for the flow of damping medium, and the pressure space (22c) is operatively connected to the further space (20) via a pressure relief valve (32).
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: October 16, 2018
    Assignee: ZF Friedrichshafen AG
    Inventors: Lothar Callies, Timo Schaffelhofer
  • Damping Valve Comprising A Pressure Relief Valve
    Publication number: 20170219042
    Abstract: An adjustable damping valve (12) includes a pressure space (22c) for controlling the damping valve (12), which pressure space (22c) is arranged inside the damping valve (12) and is connected to a further space (20) via at least one choke orifice (30) for the flow of damping medium, and the pressure space (22c) is operatively connected to the further space (20) via a pressure relief valve (32).
    Type: Application
    Filed: July 6, 2015
    Publication date: August 3, 2017
    Inventors: Lothar CALLIES, Timo SCHAFFELHOFER
  • Adjustable damping valve
    Patent number: 9212718
    Abstract: Adjustable damping valve for a vibration damper having a valve body having a pressure-loaded surface that acts in the lifting direction of the valve body and is impinged by an incident flow of damping medium from an opening inside a cross section limited by valve seat surface, and a surface operative in the closing direction is formed by a rear side of the valve body. A resulting force including a force of at least one valve spring and an actuating force of an actuator acts on the valve body. An additional surface of the valve body is pressure-loaded by damping medium by incident flow on the valve body in the closing direction of the valve body, or the valve body has a first pressure-loaded surface acting in the lifting direction, and a second pressure-loaded surface that acts in the lifting direction.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: December 15, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Steffen Heyn, Lothar Callies
  • Adjustable Damping Valve
    Publication number: 20110168935
    Abstract: Adjustable damping valve for a vibration damper having a valve body having a pressure-loaded surface that acts in the lifting direction of the valve body and is impinged by an incident flow of damping medium from an opening inside a cross section limited by valve seat surface, and a surface operative in the closing direction is formed by a rear side of the valve body. A resulting force including a force of at least one valve spring and an actuating force of an actuator acts on the valve body. An additional surface of the valve body is pressure-loaded by damping medium by incident flow on the valve body in the closing direction of the valve body, or the valve body has a first pressure-loaded surface acting in the lifting direction, and a second pressure-loaded surface that acts in the lifting direction.
    Type: Application
    Filed: July 9, 2009
    Publication date: July 14, 2011
    Inventors: Steffen Heyn, Lothar Callies