US3217655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump
Assignee: Safran Aircraft Engines SAS
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Filing: 1963-08-09
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Granted: 1965-11-16
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Expires: 1983-08-09
Abstract
No abstract record available.
Inventors
- 👤 Sercy Michel Albert
- 👤 Toure Kleber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:24
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A CENTRIFUGAL PUMP CAPABLE OF EFFECTING A VARIABLE FLOW OF FLUID, ESPECIALLY FOR USE FOR SUPPLYING FUEL FOR POSTCOMBUTION IN AIRCRAFT JET ENGINES, COMPRISING A PUMP BODY AND A ROTOR ROTATING IN SAID BODY, SAID BODY HAVING A DIFFUSOR DISPOSED AROUND THE PERIPHERY THEREOF, A CENTRAL SUCTION ORIFICE DISPOSED AXIALLY AND COMMUNICATING WITH THE CENTRAL SUCTION CONDUIT, A PLURALITY OF PERIPHERAL SUCTION CONDUITS DISPOSED IN AN INTERMEDIATE ZONE BETWEEN THE CENTRAL SUCTION ORIFICE AND THE DIFFUSOR AND PERIPHERAL SUCTION CONDUITS WHICH COMMUNICATE WITH THE PERIPHERAL SUCTION ORIFICES, SAID PERIPHERAL SUCTION CONDUITS BEING DISPOSED IN THE PUMP BODY AROUND AT LEAST TWO CIRCLES OF DIFFERENT RADII, ANNULAR COLLECTOR MEANS CONNECTED TO THE PERIPHERAL SUCTION CONDUITS AND COMMUNICATING WITH THE CENTRAL SUCTION CONDUIT UPSTREAM OF THE CLOSURE DEVICE, NON-RETURN VALVE MEANS BETWEEN THE CENTRAL SUCTION CONDUIT AND THE PERIPHERAL SUCTION ORIFICES, MEANS PROVIDED TO CONNECT THE ORIFICES OF THE VARIOUS CIRCLES SELECTIVELY WITH THE ANNULAR COLLECTOR MEANS AND MEANS FOR CLOSING THE SUCTION ORIFICE.
Claim 2
Dependent Claim
162 words
A CENTRIFUGAL PUMP CAPABLE OF EFFECTING A VARIABLE FLOW OF FLUID, ESPECIALLY FOR USE FOR SUPPLYING FUEL FOR POSTCOMBUTION IN AIRCRAFT JET ENGINES, COMPRISING A PUMP BODY AND A ROTOR ROTATING IN SAID BODY, SAID BODY HAVING A DIFFUSOR DISPOSED AROUND THE PERIPHERY THEREOF, A CENTRAL SUCTION ORIFICE DISPOSED AXIALLY AND COMMUNICATING WITH THE CENTRAL SUCTION CONDUIT, A PLURALITY OF PERIPHERAL SUCTION CONDUITS DISPOSED IN AN INTERMEDIATE ZONE BETWEEN THE CENTRAL SUCTION ORIFICE AND THE DIFFUSOR AND PERIPHERAL SUCTION CONDUITS WHICH COMMUNICATE WITH THE PERIPHERAL SUCTION ORIFICES, SAID PERIPHERAL SUCTION CONDUITS BEING DISPOSED IN THE PUMP BODY AROUND AT LEAST TWO CIRCLES OF DIFFERENT RADII, ANNULAR COLLECTOR MEANS CONNECTED TO THE PERIPHERAL SUCTION CONDUITS AND COMMUNICATING WITH THE CENTRAL SUCTION CONDUIT UPSTREAM OF THE CLOSURE DEVICE, NON-RETURN VALVE MEANS BETWEEN THE CENTRAL SUCTION CONDUIT AND THE PERIPHERAL SUCTION ORIFICES, MEANS PROVIDED TO CONNECT THE ORIFICES OF THE VARIOUS CIRCLES SELECTIVELY WITH THE ANNULAR COLLECTOR MEANS AND MEANS FOR CLOSING THE SUCTION ORIFICE.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |