Single sheet feeder with angled multi-sheet retard pad
US6382620B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2405/111
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A single sheet feeder for moving individual sheets from the top of a stack includes a driven sheet separator roller mounted on an arcuately moveable support arm, the roller having an annular sheet engaging friction surface and a bottom sheet retard pad in opposed relationship to the separator roller. In a first embodiment the retard pad has a specially configured sheet engaging surface having a sheet retarding portion which is angled downwardly from the direction of sheet movement to reduce excessively high separator roller drive torque requirements. In a second embodiment, the sheet support surface has a recess proximate the sheet retard pad for receiving the driven separator roller to prevent contact of the driven roller with the sheet support to avoid excessively high separator roller drive torque. Arcuate movement of the roller toward the sheet support is arrested by contact of the roller support arm with any suitable part of the sheet feeder chassis such as the retard pad or stack. support surface before the driven roller contacts the support surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.