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:
May. 20, 2003
Filed:
Apr. 14, 2000
Raymond A. Buisker, Madison, WI (US);
Andrew Kalnajs, Madison, WI (US);
Accuweb, Inc., Madison, WI (US);
Abstract
A method and system for guiding a web of moving material is disclosed. The system includes a plurality of variable light sources that can project light onto the surface of the web. One light source or a combination of light sources can be selected to project light onto the web, and the wavelength of the light can be selected. A light detector receives light reflected from the surface of the web and generates a data signal in response to the light received. A controller can be used to analyze the reflected light to determine the position of the web of moving material. The system enables the lateral and/or longitudinal position of various types of webs to be efficiently and effectively determined based upon the position of a line, edge, or other mark disposed on the surface of the web.