Patent US3168998A successfully refreshed from Google Patents.
US3168998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite jet engine for aircraft having a large range of speed
Assignee: Safran Aircraft Engines SAS
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Filing: 1962-07-26
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Granted: 1965-02-09
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Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Eichholtz Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:17
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0066; B64C29/005; F; F02; F02K; F02K3/00; F02K3/12; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A VTOL OR STOL AIRCRAFT OF THE TYPE HAVING AT LEAST ONE DOWNWARDLY DIRECTED LIFTING NOZZLE SO POSITIONED THAT THE UPWARD LIFT PRODUCED THEREY PASSES THROUGH OR NEAR THE CENTER OF GRAVITY OF THE AIRCRAFT, A COMPOSITE JET ENGINE COMPRISING TWO DISTINCT JET PROPULSION CHANNELS, A COMPRESSED AIR GENERATOR POSITIONED IN ONE OF SAID CHANNELS AND LOCATED IN A PART OF SAID AIRCRAFT EXTENDING TO THE REAR OF THE CENTER OF GRAVITY THEREOF, A TURBINE-DRIVEN FAN POSITIONED IN THE OTHER OF SAID CHANNELS AND LOCATED IN A PART OF SAID AIRCRAFT EXTENDING TO THE FRONT OF THE CENTER OF GRAVITY THEREOF, AND AN INTERCONNECTION CONDUIT EXTENDING BETWEEN SAID CHANNELS FOR SUPPLYING COMPRESSED AIR FROM SAID GENERATOR TO THE TURBINE DRIVING SAID FAN, SAID LIFTING NOZZLE COMMUNICATING WITH A PART OF SAID OTHER CHANNEL DOWNSTREAM OF SAID FAN AND TURBINE, WHEREBY SAID LIFTING NOZZLE IS FED WITH AT LEAST A PORTION OF THE FLOW PROVIDED BY SAID FAN AND TURBINE.
Claim 2
Dependent Claim
160 words
IN A VTOL OR STOL AIRCRAFT OF THE TYPE HAVING AT LEAST ONE DOWNWARDLY DIRECTED LIFTING NOZZLE SO POSITIONED THAT THE UPWARD LIFT PRODUCED THEREY PASSES THROUGH OR NEAR THE CENTER OF GRAVITY OF THE AIRCRAFT, A COMPOSITE JET ENGINE COMPRISING TWO DISTINCT JET PROPULSION CHANNELS, A COMPRESSED AIR GENERATOR POSITIONED IN ONE OF SAID CHANNELS AND LOCATED IN A PART OF SAID AIRCRAFT EXTENDING TO THE REAR OF THE CENTER OF GRAVITY THEREOF, A TURBINE-DRIVEN FAN POSITIONED IN THE OTHER OF SAID CHANNELS AND LOCATED IN A PART OF SAID AIRCRAFT EXTENDING TO THE FRONT OF THE CENTER OF GRAVITY THEREOF, AND AN INTERCONNECTION CONDUIT EXTENDING BETWEEN SAID CHANNELS FOR SUPPLYING COMPRESSED AIR FROM SAID GENERATOR TO THE TURBINE DRIVING SAID FAN, SAID LIFTING NOZZLE COMMUNICATING WITH A PART OF SAID OTHER CHANNEL DOWNSTREAM OF SAID FAN AND TURBINE, WHEREBY SAID LIFTING NOZZLE IS FED WITH AT LEAST A PORTION OF THE FLOW PROVIDED BY SAID FAN AND TURBINE.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |