Vacuum roll with internal rotary valve
US8939445B2 · kind B2 · utility
8Cited by
54References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2013 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Jul 5, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/57
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A vacuum roll includes an inner rotor, an intermediate stator, and an outer shell roll. The inner rotor has open and closed portions and is adapted to rotate within the intermediate stator which is rotationally fixed and also has open and closed portions. The outer shell roll has open and closed portions and is adapted to move around the intermediate stator. Together the inner rotor and the intermediate stator define an internal rotary valve interface adapted to control fluid communication between the interior chamber and the outer shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.