Patent US3195679A successfully refreshed from Google Patents.
US3195679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound attenuator and method of producing same
Assignee: Industrial Acoustics Co Inc
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Filing: 1961-02-08
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Granted: 1965-07-20
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 Duda John
- 👤 Ingard Uno
- 👤 Frederic M Oran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:56
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/1855; B; B64; B64F; B64F1/00; B64F1/26; F01N1/00; F01N1/08; F01N2450/00; F01N2450/22; F01N2450/24; F01N2470/00; F01N2470/02; F01N2470/10; F01N2490/00; F01N2490/16; F01N2490/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
APPARATUS FOR ATTENUATIN ACOUSTIC ENERGY IN A FLUID STREAM COMPRISING AT LEAST ONE CELL STRUCTURE INCLUDING A LEADING SURFACE AND A SIDE SURFACE; MEANS DEFINING A FIRST CHANNEL FOR SAID FLUID STREAM, SAID CELL STRUCTURE BEING DISPOSED WITHIN SAID FIRST CHANNEL SO THAT SAID FLUID STREAM IS DIRECTED TOWARD SAID LEADING SURFACE, AND SO THAT THE MAJOR PORTION OF SAID FLUID STREAM FLOWS ALONG SAID SIDE SURFACE; SAID LEADING SURFACE HAVING AT LEAST ONE PORT THEREIN; SAID SIDE SURFACE HAVING AT LEAST ONE APERTURE THEREIN; AND MEANS FOR DEFINING A SECOND SUBSTANTIALLY UNOBSTRUCTED CHANNEL COUPLING SAID PORT TO SAID APERTURE AND FOR BYPASSING A PORTION OF SAID FLUID STREAM VIA SAID SECOND CHANNEL AND THEREAFTER INJECTING THE SAME INTO SAID MAJOR PORTION OF SAID FLUID STREAM VIA SAID APERTURE AT AN INCREASED VELOCITY.
Claim 2
Dependent Claim
133 words
APPARATUS FOR ATTENUATIN ACOUSTIC ENERGY IN A FLUID STREAM COMPRISING AT LEAST ONE CELL STRUCTURE INCLUDING A LEADING SURFACE AND A SIDE SURFACE; MEANS DEFINING A FIRST CHANNEL FOR SAID FLUID STREAM, SAID CELL STRUCTURE BEING DISPOSED WITHIN SAID FIRST CHANNEL SO THAT SAID FLUID STREAM IS DIRECTED TOWARD SAID LEADING SURFACE, AND SO THAT THE MAJOR PORTION OF SAID FLUID STREAM FLOWS ALONG SAID SIDE SURFACE; SAID LEADING SURFACE HAVING AT LEAST ONE PORT THEREIN; SAID SIDE SURFACE HAVING AT LEAST ONE APERTURE THEREIN; AND MEANS FOR DEFINING A SECOND SUBSTANTIALLY UNOBSTRUCTED CHANNEL COUPLING SAID PORT TO SAID APERTURE AND FOR BYPASSING A PORTION OF SAID FLUID STREAM VIA SAID SECOND CHANNEL AND THEREAFTER INJECTING THE SAME INTO SAID MAJOR PORTION OF SAID FLUID STREAM VIA SAID APERTURE AT AN INCREASED VELOCITY.
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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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |