US3130385A
Expired / Lapsed
US
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Apparatus for determining the direction of arrival of wave energy
Assignee: Individual
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Filing: 1961-08-25
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Granted: 1964-04-21
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Expires: 1981-08-25
Abstract
No abstract record available.
Inventors
- 👤 Richard T Galloway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72; G01S1/76; G01S1/80; G01S1/807; G01S5/00; G01S5/18; G01S5/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
APPARATUS FOR DETERMINING THE DIRECTION OF A SOURCE OF HIGH FREQUENCY WAVE ENERGY AMPLITUDE MODULATED BY A LOW FREQUENCY SINE WAVE, COMPRISING A PAIR OF SPACED TRANSDUCERS ROTATABLE IN ASSEMBLY ABOUT AN AXIS TRANSVERSE TO THE LINE DEFINED BY SAID TRANSDUCERS, MEANS FOR COMBINING THE HIGH FREQUENCY OUTPUTS OF SAID TRANSDUCERS TO PRODUCE A FIRST ELECTRIC SIGNAL PROPORTIONAL TO THE PHASE DIFFERENCE BETWEEN THE HIGH FREQUENCY WAVE AT SAID TRANSDUCERS, MEANS FOR COMBINING THE LOW FREQUENCY OUTPUTS OF SAID TRANSDUCERS TO PRODUCE A SECOND ELECTRIC SIGNAL PROPORTIONAL TO THE ANGULAR DISPLACEMENT BETWEEN THE SOURCE OF WAVE ENERGY AND THE PLANE OF SYMMETRY OF SAID TRANSDUCERS, MEANS FOR ADDITIVELY COMBINING SAID FIRST AND
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |