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. 07, 1981
Filed:
Mar. 03, 1980
Applicant:
Inventors:
John M Lucas, Montreal, CA;
Raman Nayar, Baie D'Urfe, CA;
Assignee:
Domtar Inc., Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G01B / ;
U.S. Cl.
CPC ...
73 / ; 356243 ;
Abstract
A calibrator for calibrating optical sensors that contact a moving web comprising, a rotating disc mounted on an oscillated platform and in a position to be contacted by the contacting part of the optical sensor. The disc is rotated and oscillated back and forth so that the point of contact of the optical sensor changes relative to the surface of the disc back and forth along substantially spiral paths.