US3147913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine
Assignee: Rolls Royce PLC
•
Filing: 1962-05-07
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Granted: 1964-09-08
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Davies David Omri
- 👤 Robinson Norman Robert
- 👤 Keen John Michael Storer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:26
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A GAS TURBIN ENGINE COMPRISING A COMPRESSOR, A TURBINE, A SHAFT ON WHICH THE COMPRESSOR AND TURBINE ARE MOUNTED, A BEARING WITHIN WHICH THE SHAFT IS ROTATABLY MOUNTED, MEANS FOR SUPPLYING A QUANTITY OF LUBRICANT TO THE BEARING, A BEARING HOUSING CHAMBER IN WHICH THE BEARING IS HOUSED, A SUMP CHAMBER TO WHICH MAY DRAIN LUBRICANT WHICH HAS PASSED THROUGH THE BEARING, AND AT LEAST ONE PRESSURE FLUID OPERATED VENTURI EJECTOR PUMP FOR PUMPING LUBRICANT OUT OF THE SAID SUMP CHAMBER AND FOR MAINTAINING A LOW PRESSURE WITHIN THE BEARING HOUSING
Claim 2
Dependent Claim
91 words
A GAS TURBIN ENGINE COMPRISING A COMPRESSOR, A TURBINE, A SHAFT ON WHICH THE COMPRESSOR AND TURBINE ARE MOUNTED, A BEARING WITHIN WHICH THE SHAFT IS ROTATABLY MOUNTED, MEANS FOR SUPPLYING A QUANTITY OF LUBRICANT TO THE BEARING, A BEARING HOUSING CHAMBER IN WHICH THE BEARING IS HOUSED, A SUMP CHAMBER TO WHICH MAY DRAIN LUBRICANT WHICH HAS PASSED THROUGH THE BEARING, AND AT LEAST ONE PRESSURE FLUID OPERATED VENTURI EJECTOR PUMP FOR PUMPING LUBRICANT OUT OF THE SAID SUMP CHAMBER AND FOR MAINTAINING A LOW PRESSURE WITHIN THE BEARING HOUSING
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |