Offset pressure sensor
US5412994A · kind A · utility
Inventors
Key dates
| Filing date | Jun 14, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jun 14, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure sensor is provided in which the pressure sensing components are isolated from a portion of an attached buffer member which is connected to a fluid conduit. The offset characteristic of the pressure sensor isolates stress from being transmitted between an attached external fluid conduit and the sensitive components of the pressure sensor. One embodiment of the pressure sensor solders a fluid conduit structure to a buffer member that is attached to a pressure sensor die. An alternative embodiment of the present invention avoids the need for making solder connections between the sensor structure and external components by utilizing elastomeric conductors and pressure seals in association with the pressure sensor composite structure and first and second housing structures. These elastomeric conductors also provide improved stress isolation. The housing structures are used to compress to the seal and the elastomeric conductor against selected portions of the composite sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.