Shingle feeder
US5601282A · kind A · utility
Inventors
Key dates
| Filing date | Sep 18, 1995 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Sep 18, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H3/5238
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A feeder for sheets of material has belts for driving sheets through the feeder, and a gate above the belts to hold back the stack of sheets to be fed. The gate is elliptical in side elevational view and flat in front and rear elevational views. The major axis of the ellipse is disposed at an acute angle to the feed path, so sheets waiting to be fed engage the large-radius portion of the ellipse and are shingled just before reaching the position to be fed. The wide, flat surface has O-rings of rubber or the like to provide a high coefficient of friction for retarding the stack of sheets to be fed. A sensor detects a sheet that has been fed, and stops the feeder, so the feeder can be used as an on-demand feeder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.