Patent · US Expired

Device for unrolling sheets

US6098976A · kind A · utility

5Cited by

3References

4Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Michael Gieser · Oftersheim, DE
Edmund Klein · Wilhelmsfeld, DE

Key dates

Filing date	Mar 18, 1999
Grant date	Aug 8, 2000
Priority date	—
Expiry date	Mar 18, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2801/21
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A device for unrolling sheets, with positively guided leading edges, travelling along a conveying path of a delivery of a printing machine for processing the sheets, the sheet unrolling device being formed with a first unrolling groove followed upline in the conveying direction by at least one second unrolling groove, and having a negative-pressure generator for subjecting a respective unrolling groove to negative pressure, includes a delaying device for delaying a negative-pressure increase in the second unrolling groove relative to a negative-pressure increase in the first unrolling groove; and a delivery of a printing machine combined with the sheet-unrolling device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.