Temperature compensated valve for gas chromatography
US8794594B2 · kind B2 · utility
6Cited by
23References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Dec 31, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87249
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Plungers and plunger assemblies for a diaphragm-sealed valve are provided. Each plunger is adapted to be received in a passage of the valve body and includes a base member and an upper member having a longitudinal play in this passage with respect to the base member. A resilient middle element is provided between the upper and base member. The base member is connected to a plunger actuating mechanism within the valve body. Optionally, the upper member may be self-aligning within the passage. The plunger can be used to compensate for temperature variations experienced by the valve in use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.