Patents by Inventor Gerald Karch

Gerald Karch 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).

  • Device for evaluating vehicle, driving and operating parameters
    Patent number: 7444219
    Abstract: A device for evaluating vehicle, driving and operating parameters of a vehicle, in order to adjust the gear ratio of a transmission according to predetermined algorithms, parameters, or characteristic diagrams, selects anew the gear to be adjusted and adjusts the same by way of an evaluation in dependence upon criteria that are specific to the transmission.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: October 28, 2008
    Assignee: ZF Friedrichshafen AG
    Inventors: Gerald Karch, Matthias Winkel
  • Device for evaluating vehicle, driving and operating parameters
    Publication number: 20060009898
    Abstract: A device for evaluating vehicle, driving and operating parameters of a vehicle, in order to adjust the gear ratio of a transmission according to predetermined algorithms, parameters, or characteristic diagrams, selects anew the gear to be adjusted and adjusts the same by way of an evaluation in dependence upon criteria that are specific to the transmission.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 12, 2006
    Inventors: Gerald Karch, Matthias Winkel
  • Method for controlling a motor vehicle having an electric drive mechanism
    Patent number: 6313592
    Abstract: The invention relates to a method for controlling a motor vehicle having electric drive mechanism, especially a city autobus, in which one or more wheels are driven by one electric motor and which is provided with an electric brake and a control circuit, wherein when a first defined threshold value (1) of the rotational speed (n) of the electric motor is exceeded, the drive torque (m) is cut back and is reduced down to zero when the rotational speed (n) continues to increase, and that when a second defined threshold value (3) of the rotational speed (n) which is higher than the first threshold value (1) is exceeded, the electric brake is engaged and as the rotational speed increases exerts a maximum brake torque when a limit value (4) is reached.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: November 6, 2001
    Assignee: ZF Friedrichshafen AG
    Inventors: Thomas Voss, Bernd Müller, Bert Hellwig, Gerald Karch, Werner Wolfgang