Media feed roll apparatus and method for its use
US5203846A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Nov 12, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/224
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A media feed roll apparatus is provided for the transfer of articles such as envelopes, magazines and newspapers, one by one, from a stack to a transport which conveys these articles to a work station for printing or labeling. The apparatus and methodology according to the invention allow for independent adjustment of the roller nip between upper drive rollers and lower facing rollers so that an article such as an envelope can be inserted into the nip with the roller pairs providing substantially equal nip pressure on the article. Roller nip pressure is achieved through a mechanism allowing raising and lowering of the upper drive rollers, preferably by a pivotal action, which are independently suspended. Upon being released from the mechanism, the rollers are biased toward the article thereby creating substantially equal nip pressure on the article even if the nip spacing is different as a result of the article having different thicknesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.