Patent US3266250A successfully refreshed from Google Patents.
US3266250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion equipment for a gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1964-01-20
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Granted: 1966-08-16
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Freeman Frederick
- 👤 Smith Herbert Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:25
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/02; F02K3/04; F02K3/068; F02C; F02C3/00; F02C3/04; F02C3/045; F02C3/05; F23; F23R; F23R3/00; F23R3/42; F23R3/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
ANNULAR COMBUSTION EQUIPMENT FOR A GAS TURBINE ENGINE COMPRISING AN ANNULAR COMBUSTION CHAMBER HAVING A SUBSTANTIALLY ELLIPTICAL CROSS-SECTION WITHIN WHICH THERE IS A COMBUSTION ZONE, AN ANNULAR INLET PASSAGE WHICH RECEIVES AIR FLOWING IN A RADIALLY OUTWARD DIRECTION AND WHICH EXTENDS AROUND THE GREATER PART OF THE WALL OF THE COMBUSTION CHAMBER, A PLURALITY OF ANGULARLY SPACEDAPART DILUTION AIR CHUTES WHICH EXTEND INTO THE INLET PASSAGE AND WHICH COMMUNICATE WITH THE COMBUSTION CHAMBER DOWNSTREAM OF THE COMBUSTION ZONE, MEANS ENSURING THAT ONE PORTION OF THE AIR SUPPLIED TO THE INLET PASSAGE PASSES VIA THE CHUTES AND INTO THE COMBUSTION CHAMBER SO AS TO DILUTE THE COMBUSTION GASES, WHILE ANOTHER PORTION OF
Claim 2
Dependent Claim
111 words
ANNULAR COMBUSTION EQUIPMENT FOR A GAS TURBINE ENGINE COMPRISING AN ANNULAR COMBUSTION CHAMBER HAVING A SUBSTANTIALLY ELLIPTICAL CROSS-SECTION WITHIN WHICH THERE IS A COMBUSTION ZONE, AN ANNULAR INLET PASSAGE WHICH RECEIVES AIR FLOWING IN A RADIALLY OUTWARD DIRECTION AND WHICH EXTENDS AROUND THE GREATER PART OF THE WALL OF THE COMBUSTION CHAMBER, A PLURALITY OF ANGULARLY SPACEDAPART DILUTION AIR CHUTES WHICH EXTEND INTO THE INLET PASSAGE AND WHICH COMMUNICATE WITH THE COMBUSTION CHAMBER DOWNSTREAM OF THE COMBUSTION ZONE, MEANS ENSURING THAT ONE PORTION OF THE AIR SUPPLIED TO THE INLET PASSAGE PASSES VIA THE CHUTES AND INTO THE COMBUSTION CHAMBER SO AS TO DILUTE THE COMBUSTION GASES, WHILE ANOTHER PORTION OF
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |