Differential pressure gauge
US4476725A · kind A · utility
14Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Jul 19, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential pressure gauge comprises a balance beam (3) acting upon a vibrating blade (6). The beam (3) and the blade (6) are disposed in a rigid chamber 4 under vacuum. The beam (3) is acted upon by a force, resulting from the deformation of a flexible or expansible chamber (7) subjected to a pressure P.sub.T and disposed in a second rigid chamber (5) subjected to a pressure P.sub.S. A flexible or expansible seal element (9) isolates the chambers but transmits the forces without disturbing them. This gauge has a high precision and delivers information in digital form, particularly useful in aeronautics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.