Folding machines
US4610041A · kind A · utility
2Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1984 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Jun 14, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC14B11/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A folding machine has workpiece sensing means including an emitter by which an "outside" corner in the workpiece edge approaching the operating locality of the machine can be sensed, such sensing causing the feed length by which the workpiece is advanced step-by-step through the operating locality to be reduced; this conventionally causes pleating in the folded over edge portion. In addition, delay means is provided by which, after the emitter has been re-covered by the workpiece, the feed length reduction continues for a given number of further feed steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.