Urge roller for registering bottom edges of flat articles in a stacker
US5575464A · kind A · utility
7Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Dec 14, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1916
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An improvement in a stacking system having an urge roller, an input guide, a spring loaded backup paddle, a substantially horizontal surface and a substantially vertical registration wall. The improvement comprising a rib wrapped around the surface of the urge roller in a helical pattern. Thus, as the urge roller rotates and feeds an article toward the vertical registration wall, the helical rib forces the bottom edge of the article into contact with the horizontal surface. As a result, a properly aligned and tight stack of articles is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.