US3618360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducers suitable for use in measuring the density of or the pressure or a pressure difference in fluids
Assignee: Gemalto Terminals Ltd
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Filing: 1969-08-28
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Granted: 1971-11-09
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Expires: 1989-08-28
Abstract
Abstract A TRANSDUCER FOR MEASURING FLUID DENSITY OR PRESSURE OR PRESSURE DIFFERENCE HAS A HOLLOW CYLINDRICAL BODY WITH INTEGRAL CIRCUIT FLANGES AT ONE END. THE FLANGES OVERLAP AXIALLY OF THE BODY TO PROVIDE AN ELASTICALLY FLEXIBLE CONNECTION THEREBETWEEN. IN USE, THE BODY IS SET INTO VIBRATION WHILE IN CONTACT WITH FLUID SO THAT THE FREQUENCY OF THE VIBRATION IS AFFECTED BY THE DENSITY OR PRESSURE OR PRESSURE DIFFERENCE IN THE FLUID. ONE OF THE FLANGES ESTABLISHES A NODE AT THE CORRESPONDING END OF THE HOLLOW BODY, AND THE OTHER FLANGE ENABLES THE HOLLOW BODY TO BE MOUNTED ON A SUPPORTING STRUCTURE WITHOUT INTERFERING WITH THE NODE-FORMING FLANGE.
Inventors
- 👤 Ian F M Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:41
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/002; G01L; G01L9/00; G01L9/0001; G01L9/0008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |