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:
Sep. 23, 2003
Filed:
Jun. 20, 2001
Sheet stacking apparatus and method for controlling the feed of sheet material into a stacking wheel
Alexander Steinkogler, Munich, DE;
Thomas Hildebrandt, Kirchheim, DE;
Michael Stapfer, München, DE;
Giesecke & Devrient GmbH, Munich, DE;
Abstract
In a sheet stacking apparatus, in particular spiral slot stacker, one determines the relative position of a group of sheets A, B, for example distance t between the sheets or total length t of overlapping sheets. Sheet sensor is mounted for this purpose at a large distance before input point so that irregularities such as distance and/or overlap within the group of sheets A, B are taken into account and corresponding steps can be taken before leading sheet A is fed into stacker slot of stacking wheel . Depending on the kind of irregularity ascertained, stacking wheel is stopped, slowed down or accelerated to permit collision-free feed of the group of sheets into common slot or into separate slots . In special embodiments one influences the sheet speed by means of separately controllable transport path segments , and/or input point by means of control finger