US3121333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating instrument for divers
Assignee: Individual
•
Filing: 1961-01-23
•
Granted: 1964-02-18
•
Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Alinari Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:21
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/24; B28B7/241; B28B7/246; B63; B63C; B63C11/00; B63C11/02; B63C11/32; G; G01; G01L; G01L7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
DECOMPRESSION STAGE INDICATOR FOR DIVERS COMPRISING TWO INTERCONNECTING FLUID-FILLED CHAMBERS, ONE OF SAID CHAMBERS BEING NON-DEFORMABLE AND FILLED IN PART AT LEAST WITH COMPRESSIBLE FLUID, THE OTHER CHAMBER BEING DEFORMABLE AND EXTERNALLY SUBJECT TO HYDROSTATIC PRESSURE WHEN THE INSTRUMENT IS IMMERSED IN WATER, A CONDUIT INTERCONNECTING SAID CHAMBERS INCLUDING MEANS ADAPTED TO DELAY THE FLOW OF FLUID FROM EITHER CHAMBER TO THE OTHER IN APPROXIMATION TO A PHYSIOLOGICAL LAW WHEN THE DEFORMABLE CHAMBER UNDERGOES VARIATIONS IN VOLUME DUE TO VARIATIONS IN HYDROSTATIC PRESSURE AND MEANS INDICATING THE FLUID PRESSURE IN SAID NON-DEFORMABLE CHAMBER WITH RESPECT TO A REFERENCE PRESSURE.
Claim 2
Dependent Claim
99 words
DECOMPRESSION STAGE INDICATOR FOR DIVERS COMPRISING TWO INTERCONNECTING FLUID-FILLED CHAMBERS, ONE OF SAID CHAMBERS BEING NON-DEFORMABLE AND FILLED IN PART AT LEAST WITH COMPRESSIBLE FLUID, THE OTHER CHAMBER BEING DEFORMABLE AND EXTERNALLY SUBJECT TO HYDROSTATIC PRESSURE WHEN THE INSTRUMENT IS IMMERSED IN WATER, A CONDUIT INTERCONNECTING SAID CHAMBERS INCLUDING MEANS ADAPTED TO DELAY THE FLOW OF FLUID FROM EITHER CHAMBER TO THE OTHER IN APPROXIMATION TO A PHYSIOLOGICAL LAW WHEN THE DEFORMABLE CHAMBER UNDERGOES VARIATIONS IN VOLUME DUE TO VARIATIONS IN HYDROSTATIC PRESSURE AND MEANS INDICATING THE FLUID PRESSURE IN SAID NON-DEFORMABLE CHAMBER WITH RESPECT TO A REFERENCE PRESSURE.
References Cited (Backward Citations)
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Cited
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US2379293A
Cited
US2632374A
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US2412740A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |