Patents by Inventor Christian Klarhoefer

Christian Klarhoefer 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).

  • Multistage transmission and shifting process therefor
    Patent number: 5313856
    Abstract: A multistage transmission has a plurality of gear stages and an additional gear stage which may be engaged to transmit part of the input shaft torque before disengagement of an engaged gear stage. A friction clutch is used to engage the additional stage. Alternatively, a variable-ratio pulley connection may be used for the additional stage. Synchronization of the transmission input shaft with a gear stage to be engaged is attained by controlling the change in input shaft speed in accordance with a selected speed gradient.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: May 24, 1994
    Assignee: Volkswagen AG
    Inventors: Arthur Schneider, Christian Klarhoefer