Patent US4040159A successfully refreshed from Google Patents.
US4040159A
Expired / Lapsed
US
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Method of manufacture of cooled airfoil-shaped bucket
Assignee: General Electric Co
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Filing: 1975-10-29
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Granted: 1977-08-09
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Expires: 1995-10-29
Abstract
Abstract A method of forming an airfoil-shaped body is described which includes providing a core with cooling channels recessed into the surface thereof, affixing a calendered multilayer flexible mesh screen substrate to the surface of the core, applying braze alloy and brazing the assembly thereby filling completely the mesh screen pores and bonding further the mesh member substrate to the core, and applying an erosion-corrosion resistant layer over the brazed mesh member substrate completing the airfoil-shaped body.
Inventors
- 👤 Kenneth A. Darrow
- 👤 Paul H. Kydd
- 👤 John W. Daly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/0008; B23P; B23P15/00; B23P15/04; F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49341
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A method of forming an airfoil-shaped body which comprises providing an airfoil core having cooling channels recessed into the surface thereof, applying material unwettable by a braze alloy to the surfaces of the cooling channel walls, applying a calendered multilayer flexible mesh member substrate on the core, affixing the mesh member substrate to the core, applying braze alloy to the mesh member substrate, brazing the assembly thereby filling completely the mesh member pores and bonding further the mesh member substrate to the core, and applying an erosion-corrosion resistant layer over the brazed mesh member substrate completing the airfoil-shaped body.
Claim 2
Independent Claim
99 words
A method of forming an airfoil-shaped body which comprises providing an airfoil core having cooling channels recessed into the surface thereof, applying material unwettable by a braze alloy to the surfaces of the cooling channel walls, applying a calendered multilayer flexible mesh member substrate on the core, affixing the mesh member substrate to the core, applying braze alloy to the mesh member substrate, brazing the assembly thereby filling completely the mesh member pores and bonding further the mesh member substrate to the core, and applying an erosion-corrosion resistant layer over the brazed mesh member substrate completing the airfoil-shaped body.
Claim 3
Dependent Claim
24 words
A method as in claim 1, in which additional braze alloy is applied subsequently and brazed to the brazed substrate to increase surface thickness.
Claim 4
Dependent Claim
26 words
A method as in claim 2, in which at least one additional layer of an erosion-corrosion resistant layer is applied to the initial erosion-corrosion resistant layer.
Claim 5
Dependent Claim
26 words
A method as in claim 1, in which at least one additional layer of an erosion-corrosion resistant layer is applied to the initial erosion-corrosion resistant layer.
Claim 6
Independent Claim
110 words
A method of forming an airfoil-shaped body which comprises providing an airfoil core having cooling channels recessed into the surface thereof, applying material unwettable by a braze alloy to the surfaces of the cooling channel walls, applying a calendered multilayer flexible mesh member substrate on the core, affixing the mesh member substrate to the core, applying braze alloy to the mesh member substrate, brazing the assembly thereby filling completely the mesh member pores and bonding further the mesh member substrate to the core, applying a layer of metal over the brazed mesh member substrate, and applying an erosion-corrosion resistant layer over the layer of metal thereby completing the airfoil-shaped body.
Claim 7
Independent Claim
110 words
A method of forming an airfoil-shaped body which comprises providing an airfoil core having cooling channels recessed into the surface thereof, applying material unwettable by a braze alloy to the surfaces of the cooling channel walls, applying a calendered multilayer flexible mesh member substrate on the core, affixing the mesh member substrate to the core, applying braze alloy to the mesh member substrate, brazing the assembly thereby filling completely the mesh member pores and bonding further the mesh member substrate to the core, applying a layer of metal over the brazed mesh member substrate, and applying an erosion-corrosion resistant layer over the layer of metal thereby completing the airfoil-shaped body.
References Cited (Backward Citations)
US1147233A
Cited
US2022562A
Cited
US2161533A
Cited
US2290934A
Cited
US2641439A
Cited
US3067982A
Cited
US3032316A
Cited
AU116461A
Cited
US3402914A
Cited
US3647316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |