Patents by Inventor Rolf Schreiber

Rolf Schreiber 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 controlling an electric drive of a vehicle
    Patent number: 5708334
    Abstract: A method for open-loop and closed-loop control of an electric drive of a vehicle, in particular of a rail vehicle, utilizes a frictional engagement between a wheel and a rail or an underlying surface, to a high degree. A control is carried out which takes into account a gradient of a characteristic frictional engagement line. The system operates with a substitute variable for the gradient, which can be detected by a technical measurement, and a set torque value which is prescribed by the operator being limited in such a way that a travel/braking mode is achieved at an optimum, prescribed operating point of the characteristic frictional engagement line.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: January 13, 1998
    Assignee: ABB Research, Ltd.
    Inventors: Rolf Schreiber, Rudiger Kogel, Peter Hildenbrand
  • Motor winder for a camera
    Patent number: D265321
    Type: Grant
    Filed: April 4, 1979
    Date of Patent: July 6, 1982
    Assignee: Veb Pentacon Dresden Kamera-und Kinowerke
    Inventor: Rolf Schreiber
  • Camera
    Patent number: D267722
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: January 25, 1983
    Inventor: Rolf Schreiber