Vacuum roller
US4207998A · kind A · utility
43Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Oct 17, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H20/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A vacuum roller assembly for feeding sheet material such as finishing paper, carton, foil and the like, wherein a resilient roller shell is provided with a plurality of suction ports for drawing the sheet material into non-slip contact with the roller assembly. A plurality of deformable slit-like openings extend into the resilient shell, with the slits being in vacuum communication with the suction ports to provide a suction network over the roller and adaptable for providing suction to only that portion of the vacuum roller in contact with the sheet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.