Patent US3983955A successfully refreshed from Google Patents.
US3983955A
Expired / Lapsed
US
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Arrangement for damping sound with resonators
Assignee: Individual
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Filing: 1974-03-20
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Granted: 1976-10-05
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Expires: 1994-03-20
Abstract
Abstract An arrangement for silencing or damping sound by resonators having space elements with closed air chambers. The resonators have openings in the outside wall facing the air stream, and air in the chambers constitutes a spring. The air in the openings constitutes an element of mass. The combination is caused to oscillate by the sonic energy of the flowing air, thus forming a vibrating system which absorbs the sonic energy.
Inventors
- 👤 Costa Silard Vasiljevic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:22
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; G10K11/172; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24273
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
197 words
An arrangement for damping sound comprising, in combination, at least two air chambers each having side walls and a base portion on one end of said side walls, the other ends of said side walls facing each other; a flexible separation layer between said two air chambers, said flexible separation layer being inserted between said other ends of said side walls, said base portion having a plurality of adjacently located openings facing a stream of air passing into said air chambers, said chambers comprising resonators, the air in said chambers comprising spring means and the air in said openings comprising mass means oscillating by the sonic energy in said stream of air, the combination of said mass means and said spring means forming a vibrating system for absorbing sonic energy, the air in one of said chambers influencing the air in the other one of said chambers through said flexible separation layer, said stream of air having two branches, one branch flowing past one base portion of said two air chambers, and the other branch flowing past the base portion of the other one of said two air chambers, said resonators being comprised of plastic foam material.
Claim 2
Dependent Claim
197 words
An arrangement for damping sound comprising, in combination, at least two air chambers each having side walls and a base portion on one end of said side walls, the other ends of said side walls facing each other; a flexible separation layer between said two air chambers, said flexible separation layer being inserted between said other ends of said side walls, said base portion having a plurality of adjacently located openings facing a stream of air passing into said air chambers, said chambers comprising resonators, the air in said chambers comprising spring means and the air in said openings comprising mass means oscillating by the sonic energy in said stream of air, the combination of said mass means and said spring means forming a vibrating system for absorbing sonic energy, the air in one of said chambers influencing the air in the other one of said chambers through said flexible separation layer, said stream of air having two branches, one branch flowing past one base portion of said two air chambers, and the other branch flowing past the base portion of the other one of said two air chambers, said resonators being comprised of plastic foam material.
Claim 3
Dependent Claim
17 words
The arrangement as defined in claim 1 wherein said separation layer comprises part of said vibrating system.
Claim 4
Dependent Claim
18 words
The arrangement as defined in claim 1 wherein said resonators form building blocks with said separation layer therebetween.
Claim 5
Dependent Claim
15 words
The arrangement as defined in claim 1 wherein said separation layer comprises substantially soft material.
Claim 6
Dependent Claim
16 words
The arrangement as defined in claim 1 wherein said resonators are covered with sound damping material.
Claim 7
Dependent Claim
235 words
An arrangement for damping sound comprising, in combination, at least two air chambers each having side walls and a base portion on one end of said side walls, the other ends of said side walls facing each other; a flexible separation layer between said two air chambers, said flexible separation layer being inserted between said other ends of said side walls, said base portion having a plurality of adjacently located openings facing a stream of air passing into said air chambers, said chambers comprising resonators, the air in said chambers comprising spring means and the air in said openings comprising mass means oscillating by the sonic energy in said stream of air, the combination of said mass means and said spring means forming a vibrating system for absorbing sonic energy, the air in one of said chambers influencing the air in the other one of said chambers through said flexible separation layer, said stream of air having two branches, one branch flowing past one base portion of said two air chambers, and the other branch flowing past the base portion of the other one of said two air chambers, said separation layer comprising part of said vibrating system and being of substantially soft material, said resonators forming building blocks with said separation layer therebetween, said resonators being comprised of plastic foam material; and sound damping material covering said resonators on said wall with said openings.
Claim 8
Dependent Claim
235 words
An arrangement for damping sound comprising, in combination, at least two air chambers each having side walls and a base portion on one end of said side walls, the other ends of said side walls facing each other; a flexible separation layer between said two air chambers, said flexible separation layer being inserted between said other ends of said side walls, said base portion having a plurality of adjacently located openings facing a stream of air passing into said air chambers, said chambers comprising resonators, the air in said chambers comprising spring means and the air in said openings comprising mass means oscillating by the sonic energy in said stream of air, the combination of said mass means and said spring means forming a vibrating system for absorbing sonic energy, the air in one of said chambers influencing the air in the other one of said chambers through said flexible separation layer, said stream of air having two branches, one branch flowing past one base portion of said two air chambers, and the other branch flowing past the base portion of the other one of said two air chambers, said separation layer comprising part of said vibrating system and being of substantially soft material, said resonators forming building blocks with said separation layer therebetween, said resonators being comprised of plastic foam material; and sound damping material covering said resonators on said wall with said openings.
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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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |