Sheet feeding or delivering – Feeding – Separators
Reexamination Certificate
2008-04-02
2009-12-29
Mackey, Patrick H (Department: 3653)
Sheet feeding or delivering
Feeding
Separators
C271S090000, C271S108000
Reexamination Certificate
active
07637492
ABSTRACT:
An apparatus and a method are provided for separating first and second flat objects from a stack in which the flat objects are provided substantially in pairs and differ from one another in terms of weight per unit area and/or flexibility. The apparatus includes at least one suction element for attracting the objects by suction, a drive apparatus for moving the suction element, and a control apparatus for controlling the drive apparatus. The control apparatus drives the drive apparatus such that the suction element is moved to a first position, in which the first object that has a lower weight per unit area and/or a greater flexibility than the second object is attracted by the suction of the suction element. The first position is at a minimum distance from a stack surface.
REFERENCES:
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patent: 5984296 (1999-11-01), Fricke et al.
patent: 2004/0108649 (2004-06-01), Ono et al.
patent: 2006/0180983 (2006-08-01), Behrens et al.
patent: 195 22 901 (1996-10-01), None
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patent: 10 2004 049 385 (2006-04-01), None
German Patent and Trademark Office Search Report, dated Dec. 4, 2007.
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Locher Ralph E.
Mackey Patrick H
McClain Gerald W
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