US3594109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame tube
Assignee: Leyland Gas Turbines Ltd
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Filing: 1969-06-27
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Granted: 1971-07-20
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Expires: 1989-06-27
Abstract
Abstract A frame tube for a gas turbine combustion chamber including at least one annular linear of a ceramiclike, refractory or other heat and flame resistant material positioned within a metallic outer wall, said liner having apertures therein in registration with holes in said metallic wall, and a plurality of bushes inserted into the holes in the metallic wall and through the registering apertures in said liner, the bushes being a loose fit in the apertures and being secured to the metallic wall to hold said liner from circumferential and axial movement within the flame tube except for limited movements necessary to permit thermal expansion and contraction of the metallic wall relatively to said liner.
Inventors
- 👤 Robert Noel Penny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/007; F01; F01D; F01D25/00; F01D25/005; F23R3/02; F23R3/04; F23R3/045; F23R3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
A flame tube, for a gas turbine combustion chamber, comprising a metallic annular wall provided with holes for the introduction of air into the interior of the flame tube wherein the improvement comprises two annular liners of a refractory material positioned in adjacent axial alignment within said annular wall, said liners having notches in their adjacent circumferential edges, said notches cooperating in pairs to define apertures in registration with said holes in said annular wall, said flame tube also including a plurality of bushes inserted into said holes in said annular wall and through the registering apertures in said liners, said bushes having a loose fit in said apertures and being secured to said annular wall to hold said liners from circumferential and axial movement within said annular wall except for limited movements due to thermal expansion and contraction of said annular wall relatively to said liners.
Claim 2
Dependent Claim
147 words
A flame tube, for a gas turbine combustion chamber, comprising a metallic annular wall provided with holes for the introduction of air into the interior of the flame tube wherein the improvement comprises two annular liners of a refractory material positioned in adjacent axial alignment within said annular wall, said liners having notches in their adjacent circumferential edges, said notches cooperating in pairs to define apertures in registration with said holes in said annular wall, said flame tube also including a plurality of bushes inserted into said holes in said annular wall and through the registering apertures in said liners, said bushes having a loose fit in said apertures and being secured to said annular wall to hold said liners from circumferential and axial movement within said annular wall except for limited movements due to thermal expansion and contraction of said annular wall relatively to said liners.
Claim 3
Dependent Claim
44 words
A flame tube as claimed in claim 1 in which said bushes are made of metal and are secured by welding to said metallic wall after insertion oF said bushes into said holes in said metallic wall and into the apertures in said liners.
References Cited (Backward Citations)
GB624939A
Cited
US3064424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |