Sheet feeder
US5647584A · kind A · utility
5Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1994 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Nov 23, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2401/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeder may include a feed roller for compelling a sheet from a stack of sheets into a sheet path and a pair of separation rollers rotating in the same direction for urging sheets along the sheet path. The separation rollers may be selectively and separately disengaged from their motive source in coordination with operation of a motor for the feed roller to provide multiple checks for sheet multifeeds. At each check, extra sheets are returned to the stack of sheets. The separation rollers may each include plural annular spaced-apart sheet contact surfaces that are interleaved with the contact surfaces of the other roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.