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:
Dec. 19, 2006
Filed:
Aug. 13, 2004
Juergen Eisen, Augsburg, DE;
Wolfgang Krauth, Wulfenshausen, DE;
Hang Seibold, Anhausen, DE;
Erhardt & Leimer GmbH, Augsburg, DE;
Abstract
A method and an apparatus () are used to detect the position of the edge () of a moving product web (). The apparatus () has piezoelectric elements (), which firstly output ultrasonic pulses () and secondly pick them up and convert them into an electrical signal. The product web () is arranged between the piezoelectric elements () and a reflector () for this purpose. If the product web () is located in the measurement range of the piezoelectric element (), it attenuates the ultrasonic pulses as a result of reflection or absorption during the double passage of the latter. The position of the product web edge () is calculated from this attenuation.