Method of operating a sheet-processing machine
US6419220B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | May 31, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/52
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of operating a sheet-processing machine having a sheet-pile station, a sheet conveyor for feeding sheets to the sheet-pile station and for releasing the sheets thereat during operation, the sheet conveyor defining therebeneath a clearance space extending downwardly with a magnitude depending upon the operating condition of the machine, and a drive operatively connected to the sheet conveyor, which comprises detecting extents of the clearance space in a vertical direction which exceed predeterminable values, and, after the drive has been stopped, forcibly keeping the drive stopped for as long as the vertical extent of the clearance exceeds a predetermined value. In another aspect of the invention, instead of the foregoing last step of the method, there is substituted a step of forcibly reducing to a predetermined value an extent of the clearance that exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.