Patents by Inventor Siegfried Schulmann

Siegfried Schulmann 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 for testing electrical loads in a vehicle electrical system
    Patent number: 5973499
    Abstract: A method for testing electrical loads in a vehicle electrical system is provided, in which the loads, which are fed by a vehicle battery, are selectively switched on and off. The load-specific current consumption in the switched-on state is determined and assessed in each case. The battery voltage is measured immediately before and shortly after the switching-off of a previously switched-on load in order to determine the load-specific current consumption value from the load-specific battery voltage difference. The internal resistance of the battery serves indirectly as the measuring resistance, which is determined by loading the battery with a known load on a trial basis.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: October 26, 1999
    Assignee: DaimlerChrysler AG
    Inventor: Siegfried Schulmann