US3435381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersive acoustic line using two-layer fluid media
Assignee: Thales SA
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Filing: 1966-04-25
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Granted: 1969-03-25
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Pierre Tournois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:51
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A DISPERSIVE ACOUSTIC LINE FOR COMPRESSING ELECTRICAL SIGNALS, FREQUENCY MODULATED ON A CARRIER WAVE, COMPRISING; A HOLLOW ACOUSTIC WAVEGUIDE HAVING TWO ENDS; FIRST AND SECOND FLUID MEDIA FILLING SAID GUIDE; SAID MEDIA FORMING A FIRST AND A SECOND SUPERIMPOSED LAYER EXTENDING FROM ONE OF SAID ENDS TO THE OTHER; SAID FIRST FLUID MEDIUM PROPAGATING ACOUSTIC WAVES WITH A HIGHER PHASE VELOCITY THAN SAID SECOND FLUID MEDIUM; FIRST ELECTROACOUSTIC TRANSDUCER MEANS COUPLED TO SAID SECOND LAYER AT ONE OF SAID ENDS FOR GENERATING IN SAID FIRST AND SECOND MEDIA AN ACOUSTIC COMPRESSIONAL WAVE IN RESPONSE TO SAID ELECTRICAL SIGNALS AND SECOND ELECTROACOUSTIC TRANSDUCER MEANS COUPLED TO SAID SECOND LAYER AT SAID OTHER END FOR RECEIVING SAID COMPRESSIONAL WAVE.
Claim 2
Dependent Claim
117 words
A DISPERSIVE ACOUSTIC LINE FOR COMPRESSING ELECTRICAL SIGNALS, FREQUENCY MODULATED ON A CARRIER WAVE, COMPRISING; A HOLLOW ACOUSTIC WAVEGUIDE HAVING TWO ENDS; FIRST AND SECOND FLUID MEDIA FILLING SAID GUIDE; SAID MEDIA FORMING A FIRST AND A SECOND SUPERIMPOSED LAYER EXTENDING FROM ONE OF SAID ENDS TO THE OTHER; SAID FIRST FLUID MEDIUM PROPAGATING ACOUSTIC WAVES WITH A HIGHER PHASE VELOCITY THAN SAID SECOND FLUID MEDIUM; FIRST ELECTROACOUSTIC TRANSDUCER MEANS COUPLED TO SAID SECOND LAYER AT ONE OF SAID ENDS FOR GENERATING IN SAID FIRST AND SECOND MEDIA AN ACOUSTIC COMPRESSIONAL WAVE IN RESPONSE TO SAID ELECTRICAL SIGNALS AND SECOND ELECTROACOUSTIC TRANSDUCER MEANS COUPLED TO SAID SECOND LAYER AT SAID OTHER END FOR RECEIVING SAID COMPRESSIONAL WAVE.
References Cited (Backward Citations)
US3353120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |