US3087569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration-damping structure
Assignee: RTX BBN Technologies Corp
•
Filing: 1959-03-23
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Granted: 1963-04-30
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Kurtze Guenther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:30
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/30; F16F9/306; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN ACOUSTIC PANEL FOR DAMPING A BROAD RANGE OF ACOUSTIC FREQUENCIES WITH SUBSTANTIALLY CONSTANT DAMPING, COMPRISING STIFF STEEL-LIKE LAYERS OF SHEET MATERIAL SPACED APART, AND A CORE OF HARD WAX-LIKE MATERIAL BETWEEN AND IN CONTACT WITH SAID LAYERS AND MECHANICALLY INTERCONNECTING SAID LAYERS, THE THICKNESS OF THE SAID CORE BEING MUCH GREATER THAN THE COMBINED THICKNESSES OF THE SAID LAYERS AND THE MASS PER UNIT AREA P OF THE SAID CORE BEING AT LEAST SUBSTANTIALLY EQUAL TO THE MASS PER UNIT AREA OF THE SAID LAYERS, IN ORDER THAT ACOUSTIC VIBRATIONS ARE
Claim 2
Dependent Claim
92 words
AN ACOUSTIC PANEL FOR DAMPING A BROAD RANGE OF ACOUSTIC FREQUENCIES WITH SUBSTANTIALLY CONSTANT DAMPING, COMPRISING STIFF STEEL-LIKE LAYERS OF SHEET MATERIAL SPACED APART, AND A CORE OF HARD WAX-LIKE MATERIAL BETWEEN AND IN CONTACT WITH SAID LAYERS AND MECHANICALLY INTERCONNECTING SAID LAYERS, THE THICKNESS OF THE SAID CORE BEING MUCH GREATER THAN THE COMBINED THICKNESSES OF THE SAID LAYERS AND THE MASS PER UNIT AREA P OF THE SAID CORE BEING AT LEAST SUBSTANTIALLY EQUAL TO THE MASS PER UNIT AREA OF THE SAID LAYERS, IN ORDER THAT ACOUSTIC VIBRATIONS ARE
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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) | 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 |