Patent US3132714A successfully refreshed from Google Patents.
US3132714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic panel
Assignee: Aerojet Rocketdyne Inc
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Filing: 1962-01-02
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Granted: 1964-05-12
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Wright W Gary
- 👤 Max A Nadler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:31
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8457; E04B2001/8461; E04B2001/8471; E04B2001/8476; E04B2001/848; E04B2001/8485; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/2457; Y10T428/249921; Y10T428/249953; Y10T428/249987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
AN ACOUSTIC PANEL COMPRISING AN INNER PERFORATE STRIP, AN OUTER IMPERFORATE STRIP, AND AN INTERMEDIATE LAYER OF LOW MODULUS JOPEN-CELLED FOAM MATERIAL SECURED TOGETHER, THE PERFORATIONS IN THE INNER STRIP COMMUNICATING WITH THE CELLS IN THE FOAM STRUCTURE AND DEFINING THEREBY A PLURALITY OF HELMHOLTZ CAVITIES, THE VARIATION IN THE SIZE OF THE CELLS CAUSING A WIDE VARIATION IN THE DIMENSIONS OF THE HELMHOLTZ CAVITIES AND CAUSING A WIDE VARIATION IN THE FUNDAMENTAL SOUND ABSORPTION FREQUENCIES AND THE OVERTONE ABSORPTION FREQUENCIES OF THE HELMHOLTZ CAVITIES IN THE PANEL, WHEREBY THE ACOUSTIC PANEL WILL HAVE WIDEBAND SOUND ABSORPTION CHARACTERISTICS, AND SERRATIONS ON THE INNER SURFACE JOF THE OUTER IMPERFORATE STRIP SO THAT SOUND PENETRATING SAID ACOUSTIC PANEL TO SAID SERRATIONS IS REFLECTED THEREBY AT AN ANGLE TO THE NORMAL OF SAID SURFACE TO INCREASE THE PATH LENGTH OF THE SOUND THROUGH THE LOW MODULUS JOPEN-CELLED FOAM STRUCTURE IN ORDER TO AUGMENT THE SOUND ABSORPTION CHARACTERISTICS OF THE PANEL.
Claim 2
Dependent Claim
157 words
AN ACOUSTIC PANEL COMPRISING AN INNER PERFORATE STRIP, AN OUTER IMPERFORATE STRIP, AND AN INTERMEDIATE LAYER OF LOW MODULUS JOPEN-CELLED FOAM MATERIAL SECURED TOGETHER, THE PERFORATIONS IN THE INNER STRIP COMMUNICATING WITH THE CELLS IN THE FOAM STRUCTURE AND DEFINING THEREBY A PLURALITY OF HELMHOLTZ CAVITIES, THE VARIATION IN THE SIZE OF THE CELLS CAUSING A WIDE VARIATION IN THE DIMENSIONS OF THE HELMHOLTZ CAVITIES AND CAUSING A WIDE VARIATION IN THE FUNDAMENTAL SOUND ABSORPTION FREQUENCIES AND THE OVERTONE ABSORPTION FREQUENCIES OF THE HELMHOLTZ CAVITIES IN THE PANEL, WHEREBY THE ACOUSTIC PANEL WILL HAVE WIDEBAND SOUND ABSORPTION CHARACTERISTICS, AND SERRATIONS ON THE INNER SURFACE JOF THE OUTER IMPERFORATE STRIP SO THAT SOUND PENETRATING SAID ACOUSTIC PANEL TO SAID SERRATIONS IS REFLECTED THEREBY AT AN ANGLE TO THE NORMAL OF SAID SURFACE TO INCREASE THE PATH LENGTH OF THE SOUND THROUGH THE LOW MODULUS JOPEN-CELLED FOAM STRUCTURE IN ORDER TO AUGMENT THE SOUND ABSORPTION CHARACTERISTICS OF THE PANEL.
References Cited (Backward Citations)
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Cited
US1738654A
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US2001916A
Cited
US2076994A
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US2127867A
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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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |