US3196609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine by-pass engine
Assignee: Rolls Royce PLC
•
Filing: 1962-08-16
•
Granted: 1965-07-27
•
Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ingram John
- 👤 Land Martin
- 👤 Mclean Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:14
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/38; F02K1/383; F02K1/386; F02K3/00; F02K3/02; F02K3/04; F02K3/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A GAS TURBINE BY-PASS ENGINE HAVING IN FLOW SERIES COMPRESSOR MEANS, COMBUSTION EQUIPMENT, TURBINE MEANS, A TURBINE EXHAUST DUCT, AND A JET PIPE; A ANCILLARY AIR DUCT AND A BY-PASS DUCT EACH OF WHICH IS ARRANGED TO RECEIVE AIR COMPRESSED BY THE COMPRESSOR MEANS; A PLURALITY OF CONDUIT MEANS SPACED PERIPHERALLY AROUND THE JET PIPE FOR INTRODUCING BY-PASS AIR FROM THE BY-PASS DUCT INTO THE JET PIPE TO MIX WITH THE TURBINE EXHAUST GASES THEREIN; AND MEANS OPERATIVELY ASSOCIATED WITH A SELECTED NUMBER OF SAID PLURALITY OF CONDUIT MEANS FOR CHANGING THE FLOW AREA OF THE SELECTED NUMBER OF CONDUIT MEANS, SAID LASTMENTIONED MEANS BEING OPERABLE WHEN COMPRESSED AIR IS BEING DRAWN OFF THROUGH THE ANCILLARY AIR DUCT TO SIMULTANEOUSLY ALTER THE EFFECTIVE FLOW AREA OF THE TURBINE EXHAUST DUCT AND THE EFFECTIVE TOTAL FLOW AREA OF THE PLURALITY OF CONDUIT MEANS WHEREBY THE BY-PASS RATIO IS MAINTAINED SUBSTANTIALLY CONSTANT, SAID SELECTED NUMBER OF CONDUIT MEANS BEING LESS THAN THE TOTAL NUMBER OF SAID CONDUIT MEANS.
Claim 2
Dependent Claim
166 words
A GAS TURBINE BY-PASS ENGINE HAVING IN FLOW SERIES COMPRESSOR MEANS, COMBUSTION EQUIPMENT, TURBINE MEANS, A TURBINE EXHAUST DUCT, AND A JET PIPE; A ANCILLARY AIR DUCT AND A BY-PASS DUCT EACH OF WHICH IS ARRANGED TO RECEIVE AIR COMPRESSED BY THE COMPRESSOR MEANS; A PLURALITY OF CONDUIT MEANS SPACED PERIPHERALLY AROUND THE JET PIPE FOR INTRODUCING BY-PASS AIR FROM THE BY-PASS DUCT INTO THE JET PIPE TO MIX WITH THE TURBINE EXHAUST GASES THEREIN; AND MEANS OPERATIVELY ASSOCIATED WITH A SELECTED NUMBER OF SAID PLURALITY OF CONDUIT MEANS FOR CHANGING THE FLOW AREA OF THE SELECTED NUMBER OF CONDUIT MEANS, SAID LASTMENTIONED MEANS BEING OPERABLE WHEN COMPRESSED AIR IS BEING DRAWN OFF THROUGH THE ANCILLARY AIR DUCT TO SIMULTANEOUSLY ALTER THE EFFECTIVE FLOW AREA OF THE TURBINE EXHAUST DUCT AND THE EFFECTIVE TOTAL FLOW AREA OF THE PLURALITY OF CONDUIT MEANS WHEREBY THE BY-PASS RATIO IS MAINTAINED SUBSTANTIALLY CONSTANT, SAID SELECTED NUMBER OF CONDUIT MEANS BEING LESS THAN THE TOTAL NUMBER OF SAID CONDUIT MEANS.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |