Gap control apparatus for fold roller
US5190514A · kind A · utility
22Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 11, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Oct 11, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H45/147
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A paper folder has folding rollers spring urged against the complementary rollers so the rollers touch at the nip when no paper is present. A light spring allows the rollers to open when a piece of paper is to be received therebetween; but, the light spring completely closes after a short movement to limit the gap between the rollers. A heavy spring allows further spacing of the rollers under great force. The resulting folder will fold a range of thicknesses of paper, and including groups of several sheets of paper, without adjustment of the rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.