Rotating valve
US7213615B2 · kind B2 · utility
7Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Apr 2, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86863
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The rotating valve for high performance liquid chromatography (HPLC) has a stator with connections for the solvent reservoirs, pumps, chromatography columns etc. and a disc-shaped rotor with connecting grooves on the front face for selectively connecting different connections to one another. Said grooves are evenly distributed on two concentrical circles. The connecting grooves on the front face of the rotor are configured in the form of circular segments and are arranged in such a way that fife connections are simultaneously connected to one another in defined positions of the rotor in each circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.