Vacuum corrugation feeder with a retractable corrugator
US5921540A · kind A · utility
21Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1998 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jun 1, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H29/70
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A vacuum corrugation feeder employs a vacuum feedhead working in conjunction with an air knife to feed sheets from the top or bottom of a stack. A retractable corrugator is included in the vacuum feedhead which prevents smearing of coated sheets due to relative motion between sheet surfaces and the corrugator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.