The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 1991
Filed:
Dec. 04, 1986
Hans Wupper, Friedrichsdorf, DE;
Alfred Teves GmbH, Frankfurt am Main, DE;
Abstract
For controlling the slip when braking a road vehicle and in particular for improving control in case of different friction values on the right and left vehicle sides the rotational behavior of the front wheels and, as a measure of the vehicular velocity and vehicular deceleration, the rotational behavior of the rear wheel running with a higher friction value are observed. The rotational behavior of the front wheels and the vehicular deceleration are evaluated in accordance with criteria manifesting the danger of yawing moments which are excessive with respect to the driving stability of the vehicle. Upon reaching a predetermined vehicular deceleration threshold value representative of high yawing moments, any further yawing moment increase is restricted by limiting the braking pressure or the braking pressure increase at the front wheel having a better road surface contact. Thereby, for a certain period, the yawing moment is limited to a value which is manageable by the driver and which permits the required steering reactions in order to prevent perilous yawing angles within normal reaction times.