US3250512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1963-11-08
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Granted: 1966-05-10
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Petrie James Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:22
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/08; F01D25/12; F01D25/125; F01D25/16; F01D25/162; F01D25/24; F01D25/246; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A GAS TURBINE ENGINE COMPRISING AN OUTER CASING, A HIGH PRESSURE TURBINE, NOZZLE GUIDE VANE, AND A LOW PRESSURE TURBINE ARRANGED IN FLOW SERIES WITHIN THE OUTER CASING, A FIRST BEARING SITUATED ADJACENT AND SUPPORTING THE HIGH PRESSURE TURBINE, A SECOND BEARING SITUATED ADJACENT AND SUPPORTING THE LOW PRESSURE TURBINE, A COMMON STATIONARY STRUCTURE DISPOSED BETWEEN THE LOW AND HIGH PRESSURE TURBINES AND FIXED DIRECTLY TO THE OUTER CASING, SAID FIRST AND SECOND BEARINGS BEING MOUNTED ADJACENT ONE ANOTHER AND BEING ATTACHED TO SAID COMMON STATIONARY STRUCTURE, THE COMMON STATIONARY STRUCTURE EXTENDING THROUGH THE NOZZLE GUIDE VANES AND BEING PROTECTED BY THE LATTER FROM THE HOT TURBINE GASES.
Claim 2
Dependent Claim
108 words
A GAS TURBINE ENGINE COMPRISING AN OUTER CASING, A HIGH PRESSURE TURBINE, NOZZLE GUIDE VANE, AND A LOW PRESSURE TURBINE ARRANGED IN FLOW SERIES WITHIN THE OUTER CASING, A FIRST BEARING SITUATED ADJACENT AND SUPPORTING THE HIGH PRESSURE TURBINE, A SECOND BEARING SITUATED ADJACENT AND SUPPORTING THE LOW PRESSURE TURBINE, A COMMON STATIONARY STRUCTURE DISPOSED BETWEEN THE LOW AND HIGH PRESSURE TURBINES AND FIXED DIRECTLY TO THE OUTER CASING, SAID FIRST AND SECOND BEARINGS BEING MOUNTED ADJACENT ONE ANOTHER AND BEING ATTACHED TO SAID COMMON STATIONARY STRUCTURE, THE COMMON STATIONARY STRUCTURE EXTENDING THROUGH THE NOZZLE GUIDE VANES AND BEING PROTECTED BY THE LATTER FROM THE HOT TURBINE GASES.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |