US3554035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure detection and measuring devices
Assignee: Individual
•
Filing: 1968-04-11
•
Granted: 1971-01-12
•
Expires: 1988-04-11
Abstract
Abstract A DEVICE FOR MEASURING VARIATIONS OF PRESSURE, COMPRISING A DEFORMABLE ELEMENT IN WHICH THE ERRORS OF MEASUREMENT DUE TO THE PHENOMENON OF HYSTERESIS IN THE MATERIAL CONSTITUTING SAID ELEMENT ARE REDUCED SUBSTANTIALLY TO ZERO BY CHOOSING THE FORM OF THE DEFORMABLE ELEMENT AND THE THICKNESS OF ITS WALL IN SUCH MANNER THAT THE THICKNESS OF SAID WALL VARIES IN A LINEAR MANNER WITH THE RADIUS OF SAID WALL, WHEREBY THE STRESS-GRADIENT IS MADE SMALL OR ZERO THROUGHOUT THE WHOLE MASS OF THE MATERIAL OF THE DEFORMABLE ELEMENT.
Inventors
- 👤 Pierre R Buisson
- 👤 Goerges C Denegre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:00
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/06; G01L7/061; G01L9/00; G01L9/0001; G01L9/0002
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |