US3620083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide range dynamic pressure sensor
Assignee: National Aeronautics and Space Administration
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Filing: 1969-12-04
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Granted: 1971-11-16
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Expires: 1989-12-04
Abstract
Abstract A DYNAMIC PRESSURE SENSOR OF THE TYPE WHEREIN A DIAPHRAGM IS PROVIDED IN A CAVITY WITH A DRIVING PLATE ON ONE SIDE OF THE DIAPHRAGM AND A SENSING PLATE ON THE OTHER SIDE OF THE DIAPHAGM WHEREIN THE DRIVING AND SENSING MEMBERS ARE PERFORATED AND SPACED FROM THE WALLS OF THE CAVITY SO THAT DAMPING AND APPARANT STIFFNESS INCREASE INDUCED BY INCREASED PRESSURE ARE REDUCED. BY REDUCING THE DAMPING AND APPARANT STIFFNESS, THE RANGE OF THE INSTRUMENT IS GREATLY INCREASED SO THAT IT CAN BE USED FOR MEASURING HIGH AND LOW PRESSURES.
Inventors
- 👤 John Dimeff
- 👤 James W Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:32
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0072
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |