Liquid sampling valve
US4702889A · kind A · utility
50Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1986 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Jan 16, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4259
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid diluting and transfer valve has disc like valve elements provided with faces frictionally engaged. The valve further includes passageways for passing both sample liquid and rinse liquid and a continuous groove formed in one of the respective faces. This continuous groove effectively isolates the passageway openings to the faces and is capable of blocking passage of leakage material along the face to the periphery of the engaged face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.