Patent · US Expired

Page brake in a printing machine fly

US5979701A · kind A · utility

2Cited by

5References

19Claims

0Family size

Assignee

MAN Roland Druckmaschinen AG · DE

Inventors

Jurgen Wenzel · Düsseldorf, DE
Peter Mayer · Neumarkt an der Ybbs, AT
Georg Hartung · Seligenstadt, DE

Key dates

Filing date	Oct 23, 1997
Grant date	Nov 9, 1999
Priority date	—
Expiry date	Oct 23, 2017

Classification

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

Abstract

A sheet brake improves laying sheets off onto a stack in the take-off unit of a sheet-fed rotary printing press. The sheet brake is provided with a crank drive that generates a back-and-forth stroke by way of a synchronized drive mechanism at the rate traveled by the sheets. The rear portion of each sheet is forced by suction against a suction strip provided on the brake so that the sheet is braked while being stretched and then lowered onto the top of the stack. The suction strip has a groove arranged such that the sheet is braked and stretched as the suction strip works in conjunction with an operation of a take over gripper to accurately guide the sheet to the stack.

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