US3258737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ciavaglia silent underwater beacon
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:32
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/74; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A SILENT UNDERWATER HOMING BEACON WHICH COMPRISES: (A) A FREE-FLOODING HOUSING OF SOUND TRANSPARENT MATERIAL, (B) A PLURALITY OF PERPENDICULAR VANES SUPPORTED ABOUT A COMMON CENTRAL AXIS DISPOSED WITHIN SAID HOUSING, (C) SAID VANES HAVING SURFACES OF SOUND REFLECTING MATERIAL, (D) MEANS SUPPORTING SAID HOUSING AND VANES FOR FREE ROTATION WITHIN SAID HOUSING ABOUT SAID AXIS, (D1) DRIVE MEANS COUPLED TO AND FOR ROTATING SAID VANES, (E) STABILIZING MEANS FOR ORIENTING SAID HOUSING AND VANES, (F) WHEREBY SAID BEACON MAY BE EMPLOYED FOR HOMING PURPOSES WHEN SUBMERGED IN WATER BY THE TRANSMISSION OF A SOUND ENERGY DIRECTED AT SAID VANES AND THE DIRECTION OF THE DOPPLER-SHIFTED REFLECTED SOUND ENERGY.
Claim 2
Dependent Claim
109 words
A SILENT UNDERWATER HOMING BEACON WHICH COMPRISES: (A) A FREE-FLOODING HOUSING OF SOUND TRANSPARENT MATERIAL, (B) A PLURALITY OF PERPENDICULAR VANES SUPPORTED ABOUT A COMMON CENTRAL AXIS DISPOSED WITHIN SAID HOUSING, (C) SAID VANES HAVING SURFACES OF SOUND REFLECTING MATERIAL, (D) MEANS SUPPORTING SAID HOUSING AND VANES FOR FREE ROTATION WITHIN SAID HOUSING ABOUT SAID AXIS, (D1) DRIVE MEANS COUPLED TO AND FOR ROTATING SAID VANES, (E) STABILIZING MEANS FOR ORIENTING SAID HOUSING AND VANES, (F) WHEREBY SAID BEACON MAY BE EMPLOYED FOR HOMING PURPOSES WHEN SUBMERGED IN WATER BY THE TRANSMISSION OF A SOUND ENERGY DIRECTED AT SAID VANES AND THE DIRECTION OF THE DOPPLER-SHIFTED REFLECTED SOUND ENERGY.
Claim 3
Independent Claim
69 words
THE METHOD OF MEASURING THE VELOCITY OF SEA CURRENTS WHICH COMPRISES: (A) DISPOSING IN SAID SEA CURRENTS SOUND REFLECTING VANES FREE TO BE ROTATED THEREBY, (B) TRANSMITTING AND DIRECTING SOUND WAVE ENERGY FROM THE SEA SURFACE AGAINST SAID ROTATING VANES, (C) DETECTING THE REFLECTED SOUND ENERGY, (D) WHEREBY THE FREQUENCY SHIFT BETWEEN SAID TRANSMITTED AND DETECTED SOUND WAVE ENERGY WILL BE DETERMINATIVE OF THE VELOCITY OF SAID SEA CURRENTS.
Claim 4
Independent Claim
69 words
THE METHOD OF MEASURING THE VELOCITY OF SEA CURRENTS WHICH COMPRISES: (A) DISPOSING IN SAID SEA CURRENTS SOUND REFLECTING VANES FREE TO BE ROTATED THEREBY, (B) TRANSMITTING AND DIRECTING SOUND WAVE ENERGY FROM THE SEA SURFACE AGAINST SAID ROTATING VANES, (C) DETECTING THE REFLECTED SOUND ENERGY, (D) WHEREBY THE FREQUENCY SHIFT BETWEEN SAID TRANSMITTED AND DETECTED SOUND WAVE ENERGY WILL BE DETERMINATIVE OF THE VELOCITY OF SAID SEA CURRENTS.
References Cited (Backward Citations)
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Cited
US2405281A
Cited
US2823365A
Cited
US2557979A
Cited
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Cited
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |