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:
Jan. 14, 1997
Filed:
Aug. 18, 1995
Gerhard Frey, Esslingen, DE;
Thomas Hirth, Stuttgart, DE;
Dieter Grohmann, Karlsruhe, DE;
Willi Reichart, Jettingen, DE;
Mercedes-Benz AG, Stuttgart, DE;
Abstract
A test device for vehicles has a wheel rotation speed sensor which is sensitive to magnetic fields. The test device, having a wheel rotation simulation device, contains a sensor stimulating magnet coil, which can be positioned in the magnetic field region of the sensor such that a magnetic field coupling is provided. A control unit, drives this magnet coil with an AC voltage at a frequency which determines the wheel rotation speed. This allows the performance of functional tests of components which are sensitive to wheel rotation speed while keeping the wheels stationary. In addition, a compact roller unit, which is preferably transportable, is provided in order to carry out actual wheel rotations in order to make it possible to test further components, such as the brake system or electronic transmission control. Consequently, component tests which are sensitive to wheel rotation speed can be carried out at the production location and in workshops in a manner which is flexible and optimized with respect to time and cost.