Patents by Inventor Hans-Joachim Buettner

Hans-Joachim Buettner 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: 5302010
    Abstract: A circuit configuration for improving the driving behavior of an automotive vehicle tending to oversteering, which vehicle is equipped with an anti-lock control system, causes the slip and deceleration thresholds, decisive for the onset of control at the front wheel on the outside of the bend, to be raised upon the occurrence of a cornering identification signal.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: April 12, 1994
    Assignee: Alfred Teves GmbH
    Inventors: Norbert Ehmer, Hans-Joachim Buettner, Thomas Striegel
  • Patent number: 5272636
    Abstract: A circuit configuration for a brake system with anti-lock control and/or traction slip control including circuits (4) for improving the control during cornering. In the presence of a wheel rotational behavior typical of cornering when during a control action the wheel slip, that means the deviation of the wheel speed from the vehicle reference speed, exceeds the slip threshold (SO), this wheel rotational behavior lasting despite reduction of the braking pressure and the deceleration-responsive/acceleration-responsive control thresholds not being attained, the wheel slip is augmented by an offset (.DELTA.SO) for an invariably preset period of time or a period of time which is dependent on the further wheel rotational behavior, on the braking pressure variation and/or other control criteria.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: December 21, 1993
    Assignee: Alfred Teves GmbH
    Inventors: Gunther Buschmann, Norbert Ehmer, Hans-Joachim Buettner, Van U. Nguyen
  • Patent number: 5270933
    Abstract: A circuit configuration for a brake system with anti-lock control and traction slip control comprising, wheel sensors for generating electric signals representing the wheel rotational behavior and circuits for the cornering identification is provided such that lateral reference speeds (13, 14) are formed by virtue of selection circuits (8, 9) which select leading wheel speed according to specific criteria, and by virtue of a filter means (10, 11) whose time constants (12) are variable. A difference signal (DVS) is formed of the lateral references speeds (SRG.sub.L, SRG.sub.R), the magnitude of which is variable by inverse feedback. This difference signal (DVS) serves to actuate an adaptation circuit (18) as a function of the vehicle reference speed (V.sub.REF). The adaptation circuit influences on the control thresholds of the anti-lock control and traction slip control to adapt the control to the particularities of cornering.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: December 14, 1993
    Inventors: Helmut Fennel, Hans Wupper, Ivica Batistic, Hans-Joachim Buettner