Protected passive resonating sensors
US8162839B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Apr 9, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4908
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A protected resonating sensor may include at least one resonating sensor unit. Each sensor unit has one or more vibratable members. The protected sensor includes a compliant member that forms part of one or more chambers. A first side of the compliant member may be exposed to a medium in a measurement environment. The sensor unit may be any resonating sensor unit having a resonance frequency that depends on the value of a physical variable in a measurement environment. The protected sensor includes a substantially non-compressible medium disposed within the chamber(s). The substantially non-compressible medium may be a liquid or a gel. When the medium is a liquid, the chamber is sealed. When the medium is a gel, the chamber may be sealed or non-sealed. The medium is in contact the vibratable member(s) and with a second side of the compliant member. The medium may have a low vapor pressure. The protected sensor may also be attached to or included in or formed as part of any suitable device or sensor anchoring device and may also be implanted or inserted into a body or an organism. Methods are described for constructing the protected sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.