System to control pressure in a test device
US7958768B2 · kind B2 · utility
0Cited by
14References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2008 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Sep 17, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87249
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Embodiments of the present invention are directed toward pressure controllers and calibrators for setting or measuring pressures in test devices. In one embodiment, the pressure controller contains a dual reference pressure controller. The dual reference pressure controller is operable to maintain two different pressures relative to a reference pressure. The first pressure being a relatively fixed amount greater than the reference pressure and the second pressure being a relatively fixed amount less than the reference pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.