Acoustical panel
Abstract
Abstract AN ACOUSTICAL PANEL IS PROVIDED AND COMPRISES A SOUND ABSORBING AND INSULATING MAIN BODY HAVING UNINTERRUPTED OPPOSED PLANAR SURFACES AND A SUBSTANTIALLY UNIFORM DENSITY THROUGHOUT AND AT LEAST ONE HARD POROUS MEMBER ALSO HAVING UNINTERPUTED OPPOSED PLANAR SURFACES AND A SUBSTANTIALLY UNIFORM DENSITY THROUGHOUT BONDED TO ONE OF THE PLANAR SURFACES OF THE MAIN BODY. THE MEMBER HAS A HIGHER DENSITY THAN THE DENSITY OF THE MAIN BODY AND A THICKNESS WHICH IS LESS THAN THE THICKNESS OF SUCH MAIN BODY WITH THE MEMBER BEING AIR PERVIOUS AND ALLOWING SOUND WAVES TO BE TRANSMITTED THERETHROUGH. THE PANEL ALSO HAS A FLEXIBLE OUTER COVERING HAVING A PLURALITY OF OPENINGS THERETHROUGH WHICH IS BONDED TO THE EXPOSED PLANAR SURFACE OF THE MEMBER WITH THE COVERING HAVING A THICKNESS WHICH IS LESS THAN THE THICKNESS OF THE MEMBER AND A ROUGHENED OUTSIDE SURFACE DEFINED BY PROJECTIONS AND INDENTATIONS WHICH SERVE AS MINIATURE SOUND BAFFLES.
Inventors
- 👤 W Daniels
- 👤 R Borton
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |