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:
Jun. 12, 2018
Filed:
Jul. 09, 2014
Audi Ag, Ingolstadt, DE;
Hans-Peter Fleischmann, Stammham, DE;
AUDI AG, Ingolstadt, DE;
Abstract
A rotational speed measuring device for measuring the rotational speed on coaxially arranged drive shafts is described, wherein a first drive shaft is formed as an inner shaft in a second drive shaft embodied as a hollow shaft. The hollow shaft has at least one opening and a rotational speed encoder which is arranged on the inner shaft and can be detected through the opening of the hollow shaft. A rotational speed sensor is arranged on the outer side of the hollow shaft and is configured to pick up the rotational speed on the rotational speed encoder. A corresponding method for measuring the rotational speed on coaxially arranged drive shafts is also disclosed.