Flow rate accuracy of a fluidic delivery system
US8141844B2 · kind B2 · utility
3Cited by
36References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 22, 2008 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Oct 21, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86389
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Improving the accuracy of the flow rate of a valve in a fluidic delivery device in which a desired flow rate may be achieved by varying the duty cycle of the valve. The flow rate of fluid delivery from the valve over its lifetime is stabilized by minimizing the voltage OPENING time of the valve to account for valve and piezoelectric actuator drift. Also, the valve OPENING time of one or more fluidic parameters that impact on the flow rate delivery by the valve and differ among fluidic delivery devices is compensated to optimize the flow rate accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.