High pressure transducer
US4679438A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Nov 14, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49877
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure transducer for in particular the measurement of relatively high pressures in the range of 10,000-50,000 psi and including an elongated frame having a capillary tube extending therethrough and employing a coupler at one end of the frame for sensing input pressure. A sensing member is provided disposed about the capillary tube at the other end of the frame and has, defined with the capillary tube, a sensing chamber in communication with the capillary tube. A recess is provided in the sensing member defining a relatively thin wall adjacent the annular sensing chamber. This wall has a pressure responsive sensing surface that extends substantially parallel to the capillary tube length and upon which strain gages are secured. A method as described for securing the capillary tube with the sensing member in a liquid tight manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.