Patents by Inventor Ludwig Ordelt

Ludwig Ordelt 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: 6123155
    Abstract: A control system controls the actuation of a plurality of control devices of a utility vehicle, including a PTO shaft control device. The control system includes a control unit which is electrically connected to the control devices and to switches for the manual actuation of the control devices. One of the switches is an automatic mode switch which controls activation of an automatic mode wherein the control unit automatically controls the control devices. In response to signals from a hitch switch, the control system transmits control signals to a hitch control which controls raising and lowering of an implement hitch. When the automatic mode is activated the control unit automatically disengages the PTO shaft if the hitch is raised above a pre-set hitch position.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: September 26, 2000
    Assignee: Deere & Company
    Inventors: Jurgen Hollstein, Ludwig Ordelt