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:
Nov. 06, 2001
Filed:
May. 05, 2000
Hans Dieter Priebsch, Bissingen, DE;
Leuze Electronic GmbH & Co., Owen/Teck, DE;
Abstract
An apparatus for detecting labels on a carrier material has a transmitter that emits ultrasonic waves and a receiver that receives ultrasonic waves. The carrier material is located, with the labels, between the transmitter and the receiver. For detecting the labels, the received signal is compared to a threshold value at the output of the receiver. The threshold value is determined automatically, as a function of the received signal registered during a balancing procedure when the carrier material and/or labels are located between the transmitter and the receiver. In an alternative embodiment of the invention, the apparatus is used to distinguish between single and multiple sheets.