Safety device and method in a sheet feeder of a sheet-fed processing machine
US5405130A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/21
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Safety device in a sheet feeder of a sheet-fed processing machine includes a freely revolving pile-lifting chain for lifting and lowering a feed pile, a first drive for entraining pile-lifting chain with a driving connection so as to lift the feed pile, a second drive for entraining the pile-lifting chain with a driving connection so as to lower the feed pile, and a device for disconnecting at least one of the driving connections of the first and the second drives with the pile-lifting chain for lowering the feed pile when a limit value for a force exerted by the feed pile upon the pile-lifting chain is exceeded; and a safety method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.