High speed shingled sheet compiler

Details High speed shingled sheet compiler High speed shingled sheet compiler

2007-03-21

2009-12-08

Mackey, Patrick H (Department: 3653)

Sheet feeding or delivering

Delivering

By pneumatic conveyor

C271S194000, C271S183000

Reexamination Certificate

active

07628396

ABSTRACT:
A high speed sheet stacker includes a plurality of vacuum transport sub-assemblies interdigitated with an adjacent sub-assembly and provided with a spatial pitch that is less than or equal to a predetermined shingle distance. The collective vacuum transport assembly can thus acquire shingled sheets and transport the shingled sheets as a set, with each sheet being offset by at least one shingle distance. As a result, speed and acceleration requirements for the vacuum transport and the sheets being transported are greatly reduced compared to conventional vacuum transports that essentially transport sheets singularly. A shingled transport zone may be provided upstream of the vacuum transport system to accommodate sheets of varying size. In various embodiments, three to five vacuum transport sub-assemblies are provided to transport three to five sheets as a set.

REFERENCES:
patent: 4651984 (1987-03-01), Emrich
patent: 4805890 (1989-02-01), Martin
patent: 5100124 (1992-03-01), Pouliquen
patent: 5139253 (1992-08-01), Bohme et al.
patent: 5265863 (1993-11-01), Becker
patent: 5697608 (1997-12-01), Castelli et al.
patent: 6561507 (2003-05-01), Pollock
U.S. Appl. No. 11/528,770 to DeGruchy entitled “Sheet Buffering System” filed Sep. 27, 2006.

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