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. 03, 2007
Filed:
May. 27, 2004
Applicant:
J. Michael Spall, Commerce, MI (US);
Inventor:
J. Michael Spall, Commerce, MI (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65H 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system for feeding and transporting documents includes a feeder stage and a transport stage. The hopper assembly includes a hopper floor that carries the document stack and a flag that provides a force to move the documents along the hopper floor toward the feeder. A fixed force means biases the flag with a fixed force while a spring means biases the flag with a variable spring force. The spring force varies with flag position to cause each document in the stack to be fed with an appropriate force due to spring force decreasing as the stack size diminishes.