Patents by Inventor Rolf Hofmann

Rolf Hofmann 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: 9205740
    Abstract: An indicating device for a motor vehicle and an operating method are provided. The motor vehicle includes a drive train with at least one drive unit. The indicating device shows in a differentiable manner to the driver the drive states of accelerating, unpowered driving (coasting) and decelerating using the drive train, and at a minimum signals to the driver when the coasting state exists so as to permit the driver to optimize efficient use of the vehicle.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: December 8, 2015
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Stefan Jacobi, Rolf Hofmann
  • Publication number: 20090030582
    Abstract: An indicating device for a motor vehicle and an operating method are provided. The motor vehicle includes a drive train with at least one drive unit. The indicating device shows in a differentiable manner to the driver the drive states of accelerating, unpowered driving (coasting) and decelerating using the drive train, and at a minimum signals to the driver when the coasting state exists so as to permit the driver to optimize efficient use of the vehicle.
    Type: Application
    Filed: July 11, 2008
    Publication date: January 29, 2009
    Applicant: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Stefan JACOBI, Rolf HOFMANN
  • Publication number: 20070021887
    Abstract: A system and a method for controlling a yawing moment actuator (8) in a motor vehicle, having the process steps of detecting the current steer angle of the motor vehicle; determining the current coefficient of friction between the tire of the motor vehicle and the road; detecting the current driving speed of the motor vehicle; defining a desired curve as a function of the current steer angle, of the current coefficient of friction and of the current driving speed, which represents a connection between the steer angle and a desired lateral acceleration (ay desired) at a predetermined coefficient of friction, and adjusting the yawing moment of the yawing moment actuator (8) such that the resulting current total lateral acceleration of the motor vehicle is regulated to the desired lateral acceleration (ay desired) assigned to the current steer angle according to the defined desired curve.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 25, 2007
    Applicant: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Rolf Hofmann, Hai Xuan
  • Publication number: 20030058089
    Abstract: A display system for the internal tire pressure of tires of a vehicle. In order to display of pressure values for the driver so that the driver receives easily perceivable information concerning the internal tire pressure and its deviation, the driver receives an indication of the deviation between the actual internal tire pressure and the desired internal tire pressure.
    Type: Application
    Filed: August 19, 2002
    Publication date: March 27, 2003
    Inventors: Volker Ruehr, Michael Baum, Rolf Hofmann
  • Patent number: 4515459
    Abstract: The invention relates to a fixing arrangement for fixing toner images in a photocopying machine or the like. The arrangement includes three pressing rolls or rollers disposed substantially in a common plane and supported together at respective bearing blocks. The bearing blocks are formed as respective single parts at the ends of the rolls and form bearing seats for both outer press rolls and a guide for the bearing of the middle press roll.
    Type: Grant
    Filed: March 23, 1983
    Date of Patent: May 7, 1985
    Assignee: Develop Dr. Eisbein GmbH & Co.
    Inventors: Kurt Moser, Rolf Hofmann