Patent US3230702A successfully refreshed from Google Patents.
US3230702A
Expired / Lapsed
US
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Jet diffuser usable as a propeller shroud
Assignee: Bertin Technologies SAS
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Filing: 1964-07-27
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Granted: 1966-01-25
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Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 Soulez-Lariviere Jean Pa Marie
- 👤 Bertin Jean Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:45
CPC Classifications
F; F22; F22D; F22D11/00; F22D11/02; B; B22; B22D; B22D33/00; B64; B64C; B64C11/00; B64C11/001; B64C23/00; B64C23/005; B64C29/00; B64C29/0008; B64C29/0016; F02; F02K; F02K1/00; F02K1/28; F02K1/36; F16; F16C; F16C17/00; F16C17/10; F16F; F16F9/00; F16F9/06; F16F9/32; F16F9/3207; F16F9/3214; F16F9/34; F16F9/3415; F16F9/348; F16F9/3482; F16C2326/00; F16C2326/43; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A DIFFUSER COMPRISING AN AERODYNAMICALLY-OPERATING CONVERGENT-DIVERGENT DUCT DEFINED BY A PHYSICAL WALL EXTENDING FROM AN INTAKE END TO A DISCHARGE END THROUGH A THROAT INTERMEDIATE SAID ENDS, THE DIVERGENT PORTION OF SAID PHYSICAL WALL BEING CURVILINEAR IN LONGITUDINAL SECTION AND HAVING A CURVATURE WHICH PROGESSIVELY INCREASES TOWARD SAID DISCHARGE END.
Claim 2
Dependent Claim
50 words
A DIFFUSER COMPRISING AN AERODYNAMICALLY-OPERATING CONVERGENT-DIVERGENT DUCT DEFINED BY A PHYSICAL WALL EXTENDING FROM AN INTAKE END TO A DISCHARGE END THROUGH A THROAT INTERMEDIATE SAID ENDS, THE DIVERGENT PORTION OF SAID PHYSICAL WALL BEING CURVILINEAR IN LONGITUDINAL SECTION AND HAVING A CURVATURE WHICH PROGESSIVELY INCREASES TOWARD SAID DISCHARGE END.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |