Patents by Inventor Ralf Oberthür

Ralf Oberthür 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: 7874254
    Abstract: A device for the secondary suspension of a body of a rail vehicle, the device comprising a spring element which is between the body and a bogie and to ensure at least one raised transport level for the body during the journey of the rail vehicle. The spring element can be compressed by a traction cylinder when the rail vehicle is stationary, in order to adjust a sunken platform level for the body, which is arranged below the raised driving level. The traction cylinder is provided with means for mechanically decoupling the advancing movement of the body from a pressure reduction in the pressure chamber of the traction cylinder.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: January 25, 2011
    Assignee: Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
    Inventors: Martin Lehmair, Eduard Nies, Winfried Hommen, Martin Waldstein, Ralf Oberthur
  • Publication number: 20080210119
    Abstract: A device for the secondary suspension of a body of a rail vehicle, the device comprising a spring element which is between the body and a bogie and to ensure at least one raised transport level for the body during the journey of the rail vehicle. The spring element can be compressed by a traction cylinder when the rail vehicle is stationary, in order to adjust a sunken platform level for the body, which is arranged below the raised driving level. The traction cylinder is provided with means for mechanically decoupling the advancing movement of the body from a pressure reduction in the pressure chamber of the traction cylinder.
    Type: Application
    Filed: April 21, 2006
    Publication date: September 4, 2008
    Applicant: KNORR-BREMSE SYSTEME FUR SCHENENFAHRZEUGE GMBH
    Inventors: Martin Lehmair, Eduard Nies, Winfried Hommen, Martin Waldstein, Ralf Oberthur
  • Patent number: 7185592
    Abstract: A secondary suspension for a rail vehicle includes a superstructure, a bogie and a steel spring arranged between the superstructure and the bogie. The steel spring ensures at least one raised traveling level for the superstructure when the rail vehicle is traveling. Further included is a tension cylinder. When the rail vehicle is stopped, the steel spring is compressed by the tension cylinder to adjust the superstructure to a lowered station platform level below the at least one traveling level.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: March 6, 2007
    Assignee: Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH
    Inventors: Winfried Hommen, Henry Kirsch, Martin Lehmair, Reinhard Loebner, Martin Waldstein, Ralf Oberthür
  • Patent number: 7168370
    Abstract: System for the secondary suspension of a superstructure (1) of a rail vehicle, having a hydropneumatic spring unit (3), with an assigned suspension accumulator (7) as an active spring element, placed between the superstructure (1) and a bogie (2) arranged below it, which active spring element ensures at least one raised travelling level (NF) for the superstructure during the travel of the rail vehicle, in which case, by way of the hydropneumatic spring unit (3), by means of a level control, in addition to the raised travelling level (NF), a lowered station platform level (NB) for the superstructure (1) can also be adjusted, the suspension accumulator (7) being blockable when the rail vehicle is stopped in order to relieve the level control during a change of load, and in that, for an emergency operation caused by a pressure drop, additionally at least one emergency spring cylinder (18) is provided which, in the event of a pressure failure, by means of an independent moving-out, ensures an emergency spring lev
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: January 30, 2007
    Assignee: Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
    Inventors: Winfried Hommen, Henry Kirsch, Martin Lehmair, Reinhard Loebner, Martin Waldstein, Ralf Oberthür
  • Publication number: 20050204951
    Abstract: System for the secondary suspension of a superstructure (1) of a rail vehicle, having a hydropneumatic spring unit (3), with an assigned suspension accumulator (7) as an active spring element, placed between the superstructure (1) and a bogie (2) arranged below it, which active spring element ensures at least one raised travelling level (NF) for the superstructure during the travel of the rail vehicle, in which case, by way of the hydropneumatic spring unit (3), by means of a level control, in addition to the raised travelling level (NF), a lowered station platform level (NB) for the superstructure (1) can also be adjusted, the suspension accumulator (7) being blockable when the rail vehicle is stopped in order to relieve the level control during a change of load, and in that, for an emergency operation caused by a pressure drop, additionally at least one emergency spring cylinder (18) is provided which, in the event of a pressure failure, by means of an independent moving-out, ensures an emergency spring lev
    Type: Application
    Filed: December 20, 2004
    Publication date: September 22, 2005
    Inventors: Winfried Hommen, Henry Kirsch, Martin Lehmair, Reinhard Loebner, Martin Waldstein, Ralf Oberthur
  • Publication number: 20050183624
    Abstract: A secondary suspension for a rail vehicle includes a superstructure, a bogie and a steel spring arranged between the superstructure and the bogie. The steel spring ensures at least one raised traveling level for the superstructure when the rail vehicle is traveling. Further included is a tension cylinder. When the rail vehicle is stopped the steel spring is compressed by the tension cylinder to adjust the superstructure to a lowered station platform level below the at least one traveling level.
    Type: Application
    Filed: December 20, 2004
    Publication date: August 25, 2005
    Inventors: Winfried Hommen, Henry Kirsch, Martin Lehmair, Reinhard Loebner, Martin Waldstein, Ralf Oberthur