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:
Apr. 15, 2014
Filed:
May. 17, 2006
Peter Lohberg, Friedrichsdorf, DE;
Wolfgang Fritz, Linden, DE;
Klaus Rink, Rodenbach, DE;
Continental Teves AG & Co. OHG, Frankfurt, DE;
Abstract
Disclosed is an arrangement for detecting rotational speed of a wheel or any other rotating body by a sensor (), which is coupled via a magnetic field to an encoder () that rotates with the rotating body. If a slot between sensor element (S, S) and encoder () becomes too small in the prior art arrangements, flipping and, hence, doubling of the measured rotational speed of the wheel can occur. This caused problems in safety devices of a vehicle, which require a correct indication of the wheel rotational speed for proper operation. To improve the tolerance with respect to the mounting position of the known arrangements, two separated signal paths (S, f; S, f) are provided with sensor elements (S, S) of differing sensitivity. The signal paths (S, f; S, f) are designed so that a signal path (S, f) is always available, which is provided with a maximum rate of sensitivity so that, in the undisturbed normal case, minimum image defects of the encoder track () are achieved, simultaneously with maximum air slots, while at the same time there is always an observing signal path (S, f), whose sensitivity is rated in such a way that flipping is safely prevented in all magnetic conditions.