US3349558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion apparatus, e. g. for a gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1966-03-28
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Granted: 1967-10-31
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Smith Ian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:46
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02; H03D11/04; F; F23; F23R; F23R3/00; F23R3/002; F05; F05B; F05B2260/00; F05B2260/20; F05B2260/203; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
COMBUSTION APPARATUS COMPRISING CASING STRUCTURE AND A FLUID DUCT DISPOSED WITHIN AND SPACED FROM THE CASING STRUCTURE, AT LEAST PART OF THE WALL OF SAID DUCT BEING FORMED WITH A MULTIPLICITY OF PORES WHOSE MAXIMUM DIAMETER IS IN THE RANGE 5 TO 300 MICRONS, COMBUSTION EQUIPMENT MOUNTED WITHIN SAID DUCT, A CORRUGATED MEMBER WHICH FORMS WITH THE OUTER WALL OF THE FLUID DUCT A SERIES OF AXIALLY SPACED ANNULAR COMPARTMENTS WHICH COMMUNICATE WITH THE SPACE BETWEEN THE CASING STRUCTURE AND THE FLUID DUCT THE DIFFERENT EXTENTS THROUGH PORT MEANS OF DIFFERENT SIZES, THE PORES PROVIDING MEANS TO PERMIT PASSAGE THERETHROUGH OF COOLING AIR FOR COOLING THE INTERIOR SURFACE OF AT LEAST PART OF THE WALL.
Claim 2
Dependent Claim
115 words
COMBUSTION APPARATUS COMPRISING CASING STRUCTURE AND A FLUID DUCT DISPOSED WITHIN AND SPACED FROM THE CASING STRUCTURE, AT LEAST PART OF THE WALL OF SAID DUCT BEING FORMED WITH A MULTIPLICITY OF PORES WHOSE MAXIMUM DIAMETER IS IN THE RANGE 5 TO 300 MICRONS, COMBUSTION EQUIPMENT MOUNTED WITHIN SAID DUCT, A CORRUGATED MEMBER WHICH FORMS WITH THE OUTER WALL OF THE FLUID DUCT A SERIES OF AXIALLY SPACED ANNULAR COMPARTMENTS WHICH COMMUNICATE WITH THE SPACE BETWEEN THE CASING STRUCTURE AND THE FLUID DUCT THE DIFFERENT EXTENTS THROUGH PORT MEANS OF DIFFERENT SIZES, THE PORES PROVIDING MEANS TO PERMIT PASSAGE THERETHROUGH OF COOLING AIR FOR COOLING THE INTERIOR SURFACE OF AT LEAST PART OF THE WALL.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |