US3605939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for reducing the noise produced by fluid flow escaping from a nozzle
Assignee: Bertin Technologies SAS
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Filing: 1969-12-30
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Granted: 1971-09-20
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Expires: 1989-12-30
Abstract
Abstract A NOISE REDUCING DEVICE FOR AN EJECTOR TYPE NOZZLE HAVING A PRIMARY FLUID FLOW SURROUNDED BY A SECONDARY FLUID FLOW, WHICH DEVICE COMPRISES A HOLLOW OBSTACLE WHICH CAN BE ARRANGED TO INTERCEPT THE PRIMARY FLOW AND INCLUDES A NUMBER OF PASSAGES FOR SPLITTING THE INTERCEPTED PORTION OF THE PRIMARY FLOW INTO A NUMBER OF ELEMENTARY FLOWS, TOGETHER WITH MEANS FOR PLACING THE INTERIOR OF THE OBSTACLE, INTO COMMUNICATION WITH THE SECONDARY FLOW THEREBY TO FORM A NUMBER OF ELEMENTARY SECONDARY FLOWS WHICH ENVELOPE AT LEAST SOME OF SAID ELEMENTARY PRIMARY FLOWS.
Inventors
- 👤 Lonis Duthion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:48
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/40; F02K1/42; B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0058; B64C29/0075; F02K1/002; F02K1/38; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |