US3018466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensated hydrophone
Assignee: Harris Transducer Corp
•
Filing: 1955-10-21
•
Granted: 1962-01-23
•
Expires: 1975-10-21
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:07
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN ELECTROACOUSTIC TRANSDUCER, COMPRISING AN ELONGATED CYLINDRICAL RADIALLY STRICTIVE ELEMENT ELECTRICALLY RESPONSIVE TO INCIDENT PRESSURE, A FLUID-RESERVOIR WITHIN SAID CYLINDER AND IN PRESSURE-TRANSMITTING RELATION WITH THE INNER WALL OF SAID CYLINDER, A RELATIVELY COMPRESSIBLE FLUID IN SAID RESERVOIR, ENVELOPE MEANS CARRIED AT ONE LONGITUDINAL END OF SAID CYLINDER AND INCLUDING A YIELDABLE WALL PORTION, AND MEANS INCLUDING A RESTRICTIVE ORIFICE SUBSTANTIALLY CLOSING SAID RESERVOIR FROM THE SAPCE DEFINED BY SAID ENVELOPE, THE SPACE DEFINED BY SAID EVELOPE BEING ALSO FILLED WITH SAID RELATIVELY COMPRESSIBLE FLUID.
Claim 2
Dependent Claim
85 words
AN ELECTROACOUSTIC TRANSDUCER, COMPRISING AN ELONGATED CYLINDRICAL RADIALLY STRICTIVE ELEMENT ELECTRICALLY RESPONSIVE TO INCIDENT PRESSURE, A FLUID-RESERVOIR WITHIN SAID CYLINDER AND IN PRESSURE-TRANSMITTING RELATION WITH THE INNER WALL OF SAID CYLINDER, A RELATIVELY COMPRESSIBLE FLUID IN SAID RESERVOIR, ENVELOPE MEANS CARRIED AT ONE LONGITUDINAL END OF SAID CYLINDER AND INCLUDING A YIELDABLE WALL PORTION, AND MEANS INCLUDING A RESTRICTIVE ORIFICE SUBSTANTIALLY CLOSING SAID RESERVOIR FROM THE SAPCE DEFINED BY SAID ENVELOPE, THE SPACE DEFINED BY SAID EVELOPE BEING ALSO FILLED WITH SAID RELATIVELY COMPRESSIBLE FLUID.
References Cited (Backward Citations)
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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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |