US3302163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band acoustic transducer
Assignee: Individual
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Filing: 1965-08-31
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Granted: 1967-01-31
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Expires: 1985-08-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Daniel E Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28; G10K11/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
ACOUSTICALLY RESPONSIVE APPARATUS COMPRISING: AN ELECTROMECHANICAL TRANSDUCER ELEMENT HAVING A HOLLOW GENERALLY-CYLINDRICAL SHAPE; A CONICAL REFLECTOR DISPOSED CONCENTRICALLY AND EXTERIORALLY OF SAID CYLINDRICAL ELEMENT; A SECOND CONICAL REFLECTOR DISPOSED CONCENTRICALLY AND INTERIRALY OF SAID CYLINDRICAL ELMENT, THE TWO CONICAL REFLECTORS BEING DISPOSED TO REFLECT WAVES IN ONE DIRECTION PARALLEL TO THE AXIS OF SAID CYLINDRICAL ELEMENT AND BEING EQUALLY SPACED FROM THE OPPOSED SURFACES OF SAID CYLINDRICAL ELEMENT SO THAT THE DISTANCES IN WAVE LENGTHS ALONG ANY RADIAL LINE TO CORRESPONDING INCREMENTAL AREAS ON THE CONICAL REFLECTOR SURFACES ARE SUBSTANTIALLY EQUAL; ONE OF SAID CONICAL REFLECTORS HAVING A RELATIVELY HARD AND NONCOMPLIANT SURFACE RADIALLY FACING SAID CYLINDRICAL ELEMENT AND THE OTHER OF SAID REFLECTORS HAVING A RELATIVELY SOFT AND COMPLIANT SURFACE RADIALLY FACING SAID CYLINDRICAL ELEMENT; SAID RELATIVELY HARD SURFACE HAVING AN ACOUSTIC IMPEDANCE SUFFICIENTLY HIGHER THAN ITS OPERATIVE AMBIENT ENVIRONS FOR SUBSTANTIALLY PRESERVING THE PHASE OF IMPINGING ACOUSTIC WAVES AND THE OTHER SURFACE HAVING AN ACOUSTIC IMPEDANCE SUFFICIENTLY LOWER THAN SAID ENVIRONS FOR SUBSTANTIALLY REVERSING THE PHASE OF IMPINGING WAVES.
Claim 2
Dependent Claim
171 words
ACOUSTICALLY RESPONSIVE APPARATUS COMPRISING: AN ELECTROMECHANICAL TRANSDUCER ELEMENT HAVING A HOLLOW GENERALLY-CYLINDRICAL SHAPE; A CONICAL REFLECTOR DISPOSED CONCENTRICALLY AND EXTERIORALLY OF SAID CYLINDRICAL ELEMENT; A SECOND CONICAL REFLECTOR DISPOSED CONCENTRICALLY AND INTERIRALY OF SAID CYLINDRICAL ELMENT, THE TWO CONICAL REFLECTORS BEING DISPOSED TO REFLECT WAVES IN ONE DIRECTION PARALLEL TO THE AXIS OF SAID CYLINDRICAL ELEMENT AND BEING EQUALLY SPACED FROM THE OPPOSED SURFACES OF SAID CYLINDRICAL ELEMENT SO THAT THE DISTANCES IN WAVE LENGTHS ALONG ANY RADIAL LINE TO CORRESPONDING INCREMENTAL AREAS ON THE CONICAL REFLECTOR SURFACES ARE SUBSTANTIALLY EQUAL; ONE OF SAID CONICAL REFLECTORS HAVING A RELATIVELY HARD AND NONCOMPLIANT SURFACE RADIALLY FACING SAID CYLINDRICAL ELEMENT AND THE OTHER OF SAID REFLECTORS HAVING A RELATIVELY SOFT AND COMPLIANT SURFACE RADIALLY FACING SAID CYLINDRICAL ELEMENT; SAID RELATIVELY HARD SURFACE HAVING AN ACOUSTIC IMPEDANCE SUFFICIENTLY HIGHER THAN ITS OPERATIVE AMBIENT ENVIRONS FOR SUBSTANTIALLY PRESERVING THE PHASE OF IMPINGING ACOUSTIC WAVES AND THE OTHER SURFACE HAVING AN ACOUSTIC IMPEDANCE SUFFICIENTLY LOWER THAN SAID ENVIRONS FOR SUBSTANTIALLY REVERSING THE PHASE OF IMPINGING WAVES.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |