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:
Jul. 14, 1998
Filed:
Sep. 07, 1995
Applicant:
Inventors:
Todd E Clapp, St. Paul, MN (US);
John J Costello, St. Paul, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L / ; G01N / ;
U.S. Cl.
CPC ...
73159 ; 25055901 ; 356431 ;
Abstract
A method of monitoring bagginess of a web transverse to a longitudinal direction of the web is disclosed. The method includes projecting a first reference light onto a front face of the web transverse to the web, and projecting a first measurement light onto the front face of the web non-perpendicular to the front face and transverse to the web. The longitudinal distance on the front face of the web between a point along the first reference light and a corresponding point along the first measurement light are compared to determine bagginess of the web. A method of monitoring bagginess of a web in the longitudinal direction of the web is also disclosed.