US3613826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for reducing noise caused by a stream of fluid
Assignee: Bertin Technologies SAS
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Filing: 1970-06-25
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Granted: 1971-10-19
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Expires: 1990-06-25
Abstract
Abstract A system for reducing noise caused by a stream of fluid comprises a fluid ejection conduit comprising two series of ambient fluid intake vents distributed around its periphery; and Two series of orientatable tubular elements respectively connected to the said vents and arranged to occupy two positions, namely a retracted position in which they are folded back adjacent the inner wall of the conduit and form along the latter a substantially continuous ring bounding a continuous passage for the stream of fluid, and a noise-attenuating position in which the said tubular elements extend obliquely rearwardly and towards the axis of the conduit, the elements of the first series abutting one another at their free end in the noise-attenuating position so as to form a substantially continuous outlet ring for the ambient fluid, while the elements of the second series in the noise-attenuating position lead into the conduit at different distances from the axis of the latter as compared to the distances of the conduits of the other series in the noiseattenuating position.
Inventors
- 👤 Andre Emile Roger Cabassut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:37
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/38; F02K1/383; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
173 words
A system for reducing noise caused by a stream of fluid, comprising in combination: a fluid ejection conduit comprising two series of ambient fluid intake vents distributed around its periphery; and two series of orientatable tubular elements respectively connected to the said vents and arranged to occupy two positions, namely a retracted position in which they are folded back adjacent the inner-wall of the conduit and form along the latter a substantially continuous ring bounding a continuous passage for the stream of fluid, and a noise-attenuating position in which the said tubular elements extend obliquely rearwardly and towards the axis of the conduit, the elements of the first series abutting one another at their free end in the noise-attenuating position so as to form a substantially continuous outlet ring for the ambient fluid, while the elements of the second series in the noise-attenuating position lead into the conduit at different distances from the axis of the latter as compared to the distances of the conduits of the other series in the noise-attenuating position.
Claim 2
Independent Claim
173 words
A system for reducing noise caused by a stream of fluid, comprising in combination: a fluid ejection conduit comprising two series of ambient fluid intake vents distributed around its periphery; and two series of orientatable tubular elements respectively connected to the said vents and arranged to occupy two positions, namely a retracted position in which they are folded back adjacent the inner-wall of the conduit and form along the latter a substantially continuous ring bounding a continuous passage for the stream of fluid, and a noise-attenuating position in which the said tubular elements extend obliquely rearwardly and towards the axis of the conduit, the elements of the first series abutting one another at their free end in the noise-attenuating position so as to form a substantially continuous outlet ring for the ambient fluid, while the elements of the second series in the noise-attenuating position lead into the conduit at different distances from the axis of the latter as compared to the distances of the conduits of the other series in the noise-attenuating position.
Claim 3
Dependent Claim
41 words
The system set forth in claim 1, wherein the outlet apertures of the tubular elements have the form of semicurvilinear quadrilaterals whose curved sides are centered substantially on the axis of the conduit when the said elements occupy the retracted position.
Claim 4
Dependent Claim
24 words
The system set forth in claim 1, wherein the vents and the elements of the two series alternate around the periphery of the conduit.
Claim 5
Dependent Claim
44 words
The system set forth in claim 3, wherein the elements of the first series are flared out from the corresponding vent, the elements of the second series terminating nearer the axis of the conduit than those of the first series, in the noise-attenuating position.
Claim 6
Dependent Claim
114 words
The system set forth in claim 4, wherein the outlet apertures of the tubular elements have the form of semicurvilinear quadrilaterAls whose curved sides are centered substantially on the axis of the conduit when the said elements occupy the retracted position, the rectilinear sides of the quadrilaterals corresponding to the elements of the first series being situated in substantially radial planes in relation to the conduit when the elements occupy the noise-attenuating position and the rectilinear sides of the quadrilaterals corresponding to the elements of the second series being situated in planes parallel to those containing the rectilinear sides of the outlet apertures of the elements of the first series which are adjacent thereto.
Claim 7
Dependent Claim
48 words
The system set forth in claim 5, wherein the elements of the first series have an outer wall longer than the inner wall, the inner wall stopping substantially level with the end of the elements of the second series when the various elements are in the retracted position.
Claim 8
Dependent Claim
18 words
The system set forth in claim 1, wherein at least some of the tubular elements contain guide means.
Claim 9
Dependent Claim
22 words
The system set forth in claim 1, wherein the tubular elements are articulated about axes perpendicular to the axis of the conduit.
Claim 10
Dependent Claim
19 words
The system set forth in claim 1, wherein the tubular elements are associated with control jacks outside the conduit.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |