Valve device and paper sheet pickup apparatus
US8201819B2 · kind B2 · utility
2Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Nov 7, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1916
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A valve device is provided with a first block connected to an upstream-side suction tube that is connected to a negative-pressure chamber, a second block connected to a downstream-side suction tube that is connected to a pump, first and second shielding plates rotatably interposed between the first and second blocks, and servo motors for rotating the shielding plates. Each of the shielding plates has a plurality of air passing holes, and are rotated in opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.