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:
Jun. 01, 2021
Filed:
Apr. 05, 2019
Virtek Vision International Ulc, Waterloo, CA;
Kurt D. Rueb, Kitchener, CA;
VIRTEK VISION INTERNATIONAL ULC, Waterloo, CA;
Abstract
A method of detecting a presence of foreign material in a ply is disclosed. A source of foreign material is marked with a fluorescent indicator. The source of foreign material is separated from the ply. An illumination source is provided for illuminating the ply at a different wavelength than the fluorescent indicator fluoresces so that the ply reflects light at a different wavelength. A sensor detects illumination of the ply and fluorescent indicator included in the foreign material disposed upon the ply. Differences in light reflected from the ply and fluorescence of the indicator disposed in the foreign material are detected thereby identifying existence of the foreign material in the ply.