US3087574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High acoustic transmission loss panel and the like
Assignee: RTX BBN Technologies Corp
•
Filing: 1959-11-05
•
Granted: 1963-04-30
•
Expires: 1979-11-05
Abstract
No abstract record available.
Inventors
- 👤 Bill G Watters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:08
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10045; B32B17/10165; B32B17/10366; E04B2001/8457; E04B2001/8461; E04B2001/8466; E04B2001/8476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ACOUSTIC PANEL FOR PROVIDING HIGH ACOUSTIC TRANSMISSION LOSS FOR A BAND OF ACOUSTIC FREQUENCIES, COMPRISING STIFF, THIN STEEL-LIKE LAYERS SPACED APART BY A CORE, SAID CORE HAVING BETWEEN THE LAYERS A PLURALITY OF SPACED RIGID METAL-LIKE BLOCKS AND AT LEAST ONE LAMINA OF ELASTIC RUBBERLIKE MATERIAL, THE THICKNESS B2 OF SAID LAMINA BEING SUBSTANTIALLY LESS THAN THE THICKNESS B OF SAID CORE, SAID LAYERS HAVING A LONGITUDINAL STIFFNESS GREATER THAN THE EFFECTIVE LONGITUDINAL STIFFNESS OF SAID CORE, SAID PANEL HAVING A MASS PER UNIT AREA M AND SAID CORE HAVING A SHEAR MODULUS U RELATED TO THE VELOCITY C0 OF ACOUSTIC WAVES IN THE MEDIUM SURROUNDING SAID PANEL SUBSTANTIALLY BY THE EXPRESSION
Claim 2
Dependent Claim
113 words
AN ACOUSTIC PANEL FOR PROVIDING HIGH ACOUSTIC TRANSMISSION LOSS FOR A BAND OF ACOUSTIC FREQUENCIES, COMPRISING STIFF, THIN STEEL-LIKE LAYERS SPACED APART BY A CORE, SAID CORE HAVING BETWEEN THE LAYERS A PLURALITY OF SPACED RIGID METAL-LIKE BLOCKS AND AT LEAST ONE LAMINA OF ELASTIC RUBBERLIKE MATERIAL, THE THICKNESS B2 OF SAID LAMINA BEING SUBSTANTIALLY LESS THAN THE THICKNESS B OF SAID CORE, SAID LAYERS HAVING A LONGITUDINAL STIFFNESS GREATER THAN THE EFFECTIVE LONGITUDINAL STIFFNESS OF SAID CORE, SAID PANEL HAVING A MASS PER UNIT AREA M AND SAID CORE HAVING A SHEAR MODULUS U RELATED TO THE VELOCITY C0 OF ACOUSTIC WAVES IN THE MEDIUM SURROUNDING SAID PANEL SUBSTANTIALLY BY THE EXPRESSION
References Cited (Backward Citations)
US2184482A
Cited
US2579324A
Cited
US2744042A
Cited
GB754299A
Cited
GB810505A
Cited
US2806509A
Cited
US2838806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |