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, 1980
Filed:
Jun. 28, 1978
Applicant:
Inventor:
August Hoyer, Penfield, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
271 34 ; 271122 ; 271125 ; 271263 ;
Abstract
A multifeed detection system is disclosed that includes a drag roll which is in contact with and loaded against a driven feed belt. A slip clutch applies a torque to the drag roll. The drag roll is in synchronism with a constant speed motor that drives the feed belt. A double sheet entering the nip between the drag roll and the feed belt will cause the drag roll to hesitate with the hesitation being detected by a sensor that activates shut-down of the feeding system.