Patents by Inventor Martin Vorhnehm

Martin Vorhnehm 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).

  • Method and system for the reduction of the jerk caused by range shifting of a CVT transmission with power division
    Patent number: 7371204
    Abstract: A method and a system for reducing a jerk produced by the range shift of a transmission with a power division arrangement. The transmission includes a variable speed drive in the form of a continuously variable transmission, and a pair of planetary gear sets and a pair of shift clutches to enable power to be divided between two branches within the transmission. During a range shift between two operating ranges the variable speed drive is acted upon by a short-term transmission ratio adjustment impulse in such a way that a cancellation jerk caused thereby the adjustment impulse weakens the jerk caused by the range shift.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: May 13, 2008
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Michael Reuschel, Martin Vorhnehm, Christian Lauinger, Bernhard Walter