Safety device in the sheet feeder

Details Safety device in the sheet feeder Safety device in the sheet feeder

2006-04-25

2008-12-16

Mackey, Patrick H (Department: 3653)

Material or article handling

With weighing

C271S010010, C271S157000, C400S624000, C400S646000, C400S647000, C400S718000, C340S666000

Reexamination Certificate

active

07465139

ABSTRACT:
A safety device with two conveying systems in the sheet feeder of a machine, capable of processing a sheet-shaped material. An objective of the invention is to construct a generic sheet feeder for large-format machines so that only stacks with a specified maximum weight can reach the processing stage. The present invention encompasses a weighing device (22, 28) located in the sheet feeder (1), which determines the weight of the stack (4), is positioned on the stack carrier (3) and is connected with a regulating and controlling device (19) controlling the driving mechanism (8). At least one permissible total weight is stored in the regulating and controlling device (19). The regulating and controlling device (19) compares the weight of the stack with said stored permissible total weight and the driving mechanism (8) is activated only if the weight of the stack does not exceed the permissible total weight.

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patent: 203 12 459 (2004-12-01), None
patent: 198 55 191 (2006-06-01), None

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