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. 07, 2010
Filed:
Aug. 28, 2008
Applicants:
Ake Hellstrom, Columbus, OH (US);
Rambod Naimi, Louth, IE;
Michael O'hora, Louth, IE;
Inventors:
Assignee:
ABB Ltd., , IE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/84 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sensor is provided that measures web caliper using optical and magnetic measuring devices. The optical measuring devices may employ a confocal chromatic aberration method to accurately determine the distance to the moving web and the magnetic devices may be ferrite core coil and target. Means of stabilizing a moving web are included for improving dynamic measurement accuracy.