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:
Jul. 08, 2003
Filed:
Feb. 04, 2002
Jürgen Baur, Waldstetten, DE;
Richard Veil, Stuttgart, DE;
Pilz GmbH & Co., Ostfildern, DE;
Abstract
The present invention relates to a device and a method for safely monitoring the rotary motion of a shaft. The device comprises measuring means for recording a first and a second signal, wherein the first signal represents the motion characteristic of an angular position of a first reference point of the shaft and the second signal represents the motion characteristic of an angular position of a second reference point of the shaft. The first and the second reference points are displaced one relative to the other by a rotary angle of the shaft. Further, the device comprises evaluator having a comparator by means of which instantaneous values of the first and the second signals can be compared one with the other using a predefined geometric relation.