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:
Sep. 08, 1998
Filed:
Jan. 05, 1996
Applicant:
Inventors:
Arvind Ishwarial Patel, Unjha - Gujarat, IN;
Gerhard Alt, Kleinaitingen, DE;
Wolfgang Krauth, Friedberg-Wulfertshausen, DE;
Hans Seibold, Anhausen, DE;
Assignee:
Erhardt + Leimer GmbH, Augsberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23Q / ; B65H / ;
U.S. Cl.
CPC ...
226 45 ;
Abstract
An edge sensor working on ultrasonic principles is used to protect the edge of a travelling web and has a plurality of sensor units with adjacent or overlapping ultrasonic measurement fields between the transmitter and receiver of each unit. The units are switched so that only one unit serves to output a receiver signal when the edge crosses over into the respective measurement field.