US3151701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet silencer
Assignee: Bertin Technologies SAS
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Filing: 1961-12-26
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Granted: 1964-10-06
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Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 Duthion Louis
- 👤 Jean H Bertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
A SILENCER ADAPTED TO BE REMOVABLY FITTED TO THE JET NOZZLE OF A JET REACTION ENGINE AND COMPRISING IN COMBINATION: AN INNER CONDUIT HAVING A SOUNDPROOFED CYLINDRICAL SECTION OF GREATER DIAMETER THAN SAID NOZZLE ADAPTED TO BE LOCATED AROUND THE OUTLET OF SAID NOZZLE IN SUBSTANTIALLY COAXIAL RELATIONSHIP THEREWITH, SAID INNER CONDUIT BEING PROVIDED WITH APERTURES THERETHROUGH REGULARLY DISTRIBUTED AROUND ITS PERIPHERY AND INCLUDING A FRUSTO-CONICAL DIVERGING SECTION AXIALLY ALIGNED WITH SAID CYLINDRICAL SECTION, SAID DIVERGING SECTION HAVING A WALL WHICH IS PROVIDED WITH MULTIPLE PERFORATIONS; A SECOND CONDUIT COAXIAL TO SAID INNER CONDUIT AND SURROUNDING IT AT A DISTANCE THEREFROM, WHEREBY AN ANNULAR SPACE IS FORMED BETWEEN BOTH CONDUITS, SAID SECOND CONDUIT HAVING A CYLINDRICAL SECTION SURROUNDING A MAJOR PART OF SAID CYLINDRICAL PORTION OF SAID INNER CONDUIT AND A DIVERGING SECTION SUBSTANTIALLY PARALLEL TO AND SURROUNDING A MAJOR PART OF SAID FRUSTOCONICAL SECTION; AND TUBULAR MEMBERS FITTED WITHIN SAID APERTURES OF SAID INNER CONDUIT AND DIRECTED SUBSTANTIALLY RADIALLY THEREOF, SAID TUBULAR MEMBERS PROJECTING AND OPENING INTO SAID ANNULAR SPACE AND BEING PROVIDED INSIDE SAID INNER CONDUIT WITH OUTLET PORTS DIRECTED TOWARDS SAID FRUSTOCONICAL SECTION, WHEREBY AIR FROM SAID ANNULAR SPACE MAY BE MIXED WITH THE GAS EJECTED BY SAID NOZZLE.
Claim 2
Dependent Claim
202 words
A SILENCER ADAPTED TO BE REMOVABLY FITTED TO THE JET NOZZLE OF A JET REACTION ENGINE AND COMPRISING IN COMBINATION: AN INNER CONDUIT HAVING A SOUNDPROOFED CYLINDRICAL SECTION OF GREATER DIAMETER THAN SAID NOZZLE ADAPTED TO BE LOCATED AROUND THE OUTLET OF SAID NOZZLE IN SUBSTANTIALLY COAXIAL RELATIONSHIP THEREWITH, SAID INNER CONDUIT BEING PROVIDED WITH APERTURES THERETHROUGH REGULARLY DISTRIBUTED AROUND ITS PERIPHERY AND INCLUDING A FRUSTO-CONICAL DIVERGING SECTION AXIALLY ALIGNED WITH SAID CYLINDRICAL SECTION, SAID DIVERGING SECTION HAVING A WALL WHICH IS PROVIDED WITH MULTIPLE PERFORATIONS; A SECOND CONDUIT COAXIAL TO SAID INNER CONDUIT AND SURROUNDING IT AT A DISTANCE THEREFROM, WHEREBY AN ANNULAR SPACE IS FORMED BETWEEN BOTH CONDUITS, SAID SECOND CONDUIT HAVING A CYLINDRICAL SECTION SURROUNDING A MAJOR PART OF SAID CYLINDRICAL PORTION OF SAID INNER CONDUIT AND A DIVERGING SECTION SUBSTANTIALLY PARALLEL TO AND SURROUNDING A MAJOR PART OF SAID FRUSTOCONICAL SECTION; AND TUBULAR MEMBERS FITTED WITHIN SAID APERTURES OF SAID INNER CONDUIT AND DIRECTED SUBSTANTIALLY RADIALLY THEREOF, SAID TUBULAR MEMBERS PROJECTING AND OPENING INTO SAID ANNULAR SPACE AND BEING PROVIDED INSIDE SAID INNER CONDUIT WITH OUTLET PORTS DIRECTED TOWARDS SAID FRUSTOCONICAL SECTION, WHEREBY AIR FROM SAID ANNULAR SPACE MAY BE MIXED WITH THE GAS EJECTED BY SAID NOZZLE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |