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:
Mar. 26, 2013
Filed:
Jun. 18, 2008
Daniel H. Carlson, Arden Hills, MN (US);
Dale L. Ehnes, Cotati, CA (US);
Daniel S. Wertz, Sebastopol, CA (US);
Luis A. Aguirre, Austin, TX (US);
Levent Biyikli, Cedar Park, TX (US);
Alan B. Campbell, Oakdale, MN (US);
Daniel H. Carlson, Arden Hills, MN (US);
Dale L. Ehnes, Cotati, CA (US);
Daniel S. Wertz, Sebastopol, CA (US);
Luis A. Aguirre, Austin, TX (US);
Levent Biyikli, Cedar Park, TX (US);
Alan B. Campbell, Oakdale, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Methods and systems for indicating the displacement of a flexible web are described. An elongated, flexible web includes an integral scale having scale features configured to modulate energy directed towards the web. A transport mechanism provides relative movement between the web relative to a transducer. The transducer detects energy modulated by the scale features and generates a signal indicting a continuous web displacement based on the modulated energy.