Patents by Inventor Rolf Schmiechen

Rolf Schmiechen 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).

  • Railway bogie
    Patent number: 7934458
    Abstract: An axlebox-spring-unit of a railway bogie includes at least one hydraulic spring having a housing required for functionality of the hydraulic spring, and an axlebox. At least a part of the axlebox forms at least a part of the housing.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: May 3, 2011
    Assignees: AB SKF, Contitech Luftfedersysteme GmbH
    Inventors: Volker Gedenk, Friedrich Hoppmann, Rolf Schmiechen, John Skiller
  • Railway bogie
    Publication number: 20070175356
    Abstract: An axlebox-spring-unit of a railway bogie includes at least one hydraulic spring having a housing required for functionality of the hydraulic spring, and an axlebox. At least a part of the axlebox forms at least a part of the housing.
    Type: Application
    Filed: March 26, 2004
    Publication date: August 2, 2007
    Applicant: AB SKF
    Inventors: Volker Gedenk, Friedrich Hoppmann, Rolf Schmiechen, John Skiller
  • Worm gear
    Patent number: 4679458
    Abstract: A worm gear has a threaded spindle and a threaded nut, the thread on the spindle or the nut or on both having a profile such that the transition regions connecting the thread crown surface to the thread flanks are rounded, as is the crown surface itself. Further, the spindle thread and nut thread are intermeshed with axial and radial play such that radial forces exerted under torque loading are transmitted only by areas of the crown surface, which transmitted forces are supported by the respective areas of the opposing groove bottom. Smooth functioning is ensured even when the threaded spindle occupies a position of maximum inclination relative to the nut.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: July 14, 1987
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Norbert Klupfel, Gebhard Pape, Roland Haas, Rolf Schmiechen