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:
Jan. 01, 2013
Filed:
Apr. 18, 2011
Applicant:
Max W. Dahlgren, Arlington, TX (US);
Inventor:
Max W. Dahlgren, Arlington, TX (US);
Assignee:
Epic Products International Corp., Arlington, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A double sheet detector includes a pair of rollers forming a nip through which a fed sheet passes, causing the rollers to separate. The amount of separation is transmitted to a transducer which generates a signal proportional to the sheet thickness. Signals from the transducer are frequently sensed and averaged over one or more full revolutions of the rollers, so that signal variations resulting from irregularities in the shape of the rollers are canceled out.