Patent US3351903A successfully refreshed from Google Patents.
US3351903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer with pressure release means
Assignee: General Dynamics Corp
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Filing: 1966-10-27
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Granted: 1967-11-07
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Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Helmut J Straube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:02
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN UNDERWATER TRANSDUCER OPERABLE AT VARIOUS DEPTHS AND AMBIENT PRESSURES COMPRISING (A) A HOUSING HAVING A CAVITY OPEN AT ONE END AND TERMINATING IN A PLURALITY OF SUBCAVITIES AT THE OPPOSITE END THEREOF, (B) A RELATIVELY STIFF PLATE MOUNTED OPPOSITE SAID OPEN END OF SAID CAVITY IN SEALING RELATIONSHIP WITH SAID PLURALITY OF SUBCAVITIES TO DEFINE A CORRESPONDING PLURALITY OF GAS-FILLED CHAMBERS, (C) SAID SUBCAVITIES IN SAID HOUSING BEING SEPARATED BY WALL PORTIONS WHICH SUPPORT SAID PLATE AGAINST FLUID PRESSURE WITHIN SAID CAVITY, AND (D) AN ELEMENT EXHIBITING ELECTROMECHANICAL TRANSDUCING ACTION MOUNTED IN SAID OPEN END OF SAID CAVITY IN SEALING RELATIONSHIP WITH SAID HOUSING FOR CONTAINING A FLUID THEREIN, (E) SAID ELEMENT GENERATES COMPRESSIONAL WAVES IN ONE DIRECTION TRANSVERSE TO SAID OPEN END OF SAID CAVITY AND IN ANOTHER DIRECTION TO SAID PLATE IN RESPONSE TO AN ELECTRICAL INPUT SIGNAL APPLIED THERETO.
Claim 2
Dependent Claim
143 words
AN UNDERWATER TRANSDUCER OPERABLE AT VARIOUS DEPTHS AND AMBIENT PRESSURES COMPRISING (A) A HOUSING HAVING A CAVITY OPEN AT ONE END AND TERMINATING IN A PLURALITY OF SUBCAVITIES AT THE OPPOSITE END THEREOF, (B) A RELATIVELY STIFF PLATE MOUNTED OPPOSITE SAID OPEN END OF SAID CAVITY IN SEALING RELATIONSHIP WITH SAID PLURALITY OF SUBCAVITIES TO DEFINE A CORRESPONDING PLURALITY OF GAS-FILLED CHAMBERS, (C) SAID SUBCAVITIES IN SAID HOUSING BEING SEPARATED BY WALL PORTIONS WHICH SUPPORT SAID PLATE AGAINST FLUID PRESSURE WITHIN SAID CAVITY, AND (D) AN ELEMENT EXHIBITING ELECTROMECHANICAL TRANSDUCING ACTION MOUNTED IN SAID OPEN END OF SAID CAVITY IN SEALING RELATIONSHIP WITH SAID HOUSING FOR CONTAINING A FLUID THEREIN, (E) SAID ELEMENT GENERATES COMPRESSIONAL WAVES IN ONE DIRECTION TRANSVERSE TO SAID OPEN END OF SAID CAVITY AND IN ANOTHER DIRECTION TO SAID PLATE IN RESPONSE TO AN ELECTRICAL INPUT SIGNAL APPLIED THERETO.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |