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. 08, 2013
Filed:
Jul. 27, 2011
Applicants:
Yi-liang Chen, Taipei, TW;
Ping-hung Kuo, Taipei, TW;
Chien-kuo Kuan, Taipei, TW;
Inventors:
Assignee:
Primax Electronics Ltd., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65H 3/52 (2006.01); B65H 3/32 (2006.01); B65H 3/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A retard roller of an automatic document feeder provides a frictional force to separate plural documents from each other. The retard roller can provide a first damping torque and a second damping torque with different directions. The second damping torque is smaller than the first damping torque. As such, the frictional force exerted on the document is reduced for returning the document out of the automatic document feeder. A retard roller module having such a retard roller is also provided.