Device for avoiding registration errors in a sheet-processing machine
US5651544A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1996 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Feb 5, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F21/05
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Device for avoiding registration errors at an oscillating pregripper of a sheet-processing machine includes a gripper bar deflectable in synchronism with the machine so that a respective sheet being processed therein undergoes stretching in a trailing region of the sheet. The gripper bar, in a middle region thereof, is guided and driven in a flexurally bending-resistant manner. A feeder cylinder carries thrust pads at both sides thereof for deflecting the gripper bar at the ends thereof in a sheet travel direction before a respective transfer of a sheet at the feeder cylinder, and for maintaining the deflection until sheet transfer has been completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.