Pressure sensing apparatus
US6931933B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Dec 3, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure sensing unit has a pressure responsive member, a pressure sensor, and a hydraulic connector hydraulically connecting the pressure responsive member with the pressure sensor to produce an indication of sensed pressure. The hydraulic connector includes a tubular member and a longitudinal insert in the tubular member with hydraulic fluid in the tubular member between the insert and the member. The tubular member, the insert and the hydraulic fluid and the dimensions of the tubular member and the insert are such that the hydraulic fluid transmitted to the pressure sensor is substantially independent of temperature changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.