Patent US3290646A successfully refreshed from Google Patents.
US3290646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonar transducer
Assignee: Raytheon Co
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Filing: 1964-11-09
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Granted: 1966-12-06
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Stanley L Ehrlich
- 👤 Paul D Frelich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:53
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A TRANSDUCER THE COMBINATION COMPRISING: A CYLINDRICAL BASE; A PLURALITY OF ANNULAR ACTIVE ELEMENTS EACH ENCIRCLING A DIFFERENT PORTION OF SAID BASE THAN THE OTHERS OF SAID ELEMENTS ENCIRCLE; MEANS ACOUSTICALLY ISOLATING SAID ELEMENTS FROM SAID BASE AND FROM EACH OTHER; A PLURALITY OF SUBSTANTIALLY PARALLEL AND AXIAL ELECTRODES EXTENDING SUBSTANTIALLY THE LENGTH OF SAID ACTIVE ELEMENTS; MEANS FOR CONNECTING CERTAIN OF SAID ELECTRODES ONE TO ANOTHER TO PROVIDE A REFERENCE GROUND VOLTAGE AND A PLURALITY OF OUTPUT VOLTAGES; AND A COMBINING NETWORK INCLUDING FOUR TRANSFORMERS EACH HAVING A PLURALITY OF INPUT WINDINGS AND AN OUTPUT WINDING, SAID INPUT WINDINGS BEING CONNECTED TO EACH OTHER AND TO SAID REFERENCE GROUND VOLTAGE AND SAID OUTPUT VOLTAGES TO PROVIDE TWO DIPOLE PATTERN VOLTAGES AND AN OMNIDIRECTIONAL PATTERN VOLTAGE.
Claim 2
Dependent Claim
127 words
IN A TRANSDUCER THE COMBINATION COMPRISING: A CYLINDRICAL BASE; A PLURALITY OF ANNULAR ACTIVE ELEMENTS EACH ENCIRCLING A DIFFERENT PORTION OF SAID BASE THAN THE OTHERS OF SAID ELEMENTS ENCIRCLE; MEANS ACOUSTICALLY ISOLATING SAID ELEMENTS FROM SAID BASE AND FROM EACH OTHER; A PLURALITY OF SUBSTANTIALLY PARALLEL AND AXIAL ELECTRODES EXTENDING SUBSTANTIALLY THE LENGTH OF SAID ACTIVE ELEMENTS; MEANS FOR CONNECTING CERTAIN OF SAID ELECTRODES ONE TO ANOTHER TO PROVIDE A REFERENCE GROUND VOLTAGE AND A PLURALITY OF OUTPUT VOLTAGES; AND A COMBINING NETWORK INCLUDING FOUR TRANSFORMERS EACH HAVING A PLURALITY OF INPUT WINDINGS AND AN OUTPUT WINDING, SAID INPUT WINDINGS BEING CONNECTED TO EACH OTHER AND TO SAID REFERENCE GROUND VOLTAGE AND SAID OUTPUT VOLTAGES TO PROVIDE TWO DIPOLE PATTERN VOLTAGES AND AN OMNIDIRECTIONAL PATTERN VOLTAGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |