Sheet feeder with single sheet bypass
US5228671A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Nov 20, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H31/36
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeder with single sheet bypass sheet feeding capability has a sheet support platform for supporting a stack of sheets, at least one sheet feed roll fixedly mounted on a rotatable shaft and having a segmented feed portion for contacting and feeding the top sheet in a stack of sheets and defining therewith a sheet feeding path, sheet registration rolls downstream of the feed roll, at least one sheet bypass registration finger upstream of the registration rolls and downstream of and freely mounted about the feed roll shaft in the sheet feeding path, a sheet bypass guide rotatably mounted about the sheet registration rolls, the bypass guide having an angled sheet entrance throat to center a sheet and guide the leading edge into said bypass registration finger, the feed roll being rotatable through an opening in the bypass guide from a nonfeeding, standby position where the segmented portion is on the side of the shaft opposite the sheet support platform and a sheet feeding position where the segmented portion is between the shaft and the sheet support platform, the feed roll including a device to move the bypass registration finger out of the sheet feeding path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.