Vacuum drum with countersunk holes
US6043836A · kind A · utility
69Cited by
8References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J13/226
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is for a vacuum drum (300) with countersunk holes (334). In one embodiment, vacuum holes (306), countersunk vacuum holes (334), and blind countersunk vacuum holes (336) on an outer surface of the vacuum drum are connected by vacuum grooves to facilitate holding multiple sheets of media on the vacuum drum (300), which revolves at high speeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.