US4784573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine blade attachment
Assignee: RTX Corp
•
Filing: 1987-08-17
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Granted: 1988-11-15
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Expires: 2007-08-17
Abstract
Abstract A bladed turbine disk has a plurality of air cooled blades. The disk has a substantially continuous impervious rim. Each blade has a platform and an impervious base with the cooling air inlet between the platform and base. Each blade base is diffusion bonded to the rim, preferably to a slightly raised plateau. The edge of the bond surface is accessable and free of stress concentration.
Inventors
- 👤 Robert Ress, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:22
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D11/00; F01D11/005; F01D11/006; F01D5/02; F01D5/08; F01D5/081; F01D5/30; F01D5/3061; F05; F05D; F05D2240/00; F05D2240/80; F05D2240/81; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49341
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A bladed turbine disk comprising: a disk having a substantially continuous impervious outer rim; a plurality of hollow air cooled turbine blades, including air outlet openings, and an integral blade platform; a cavity between adjacent blades below said blade platform and above said outer rim; each blade having a continuous impervious base, an air inlet opening on one side of said blade in fluid communication with said cavity and below said platform; and the base of each blade diffusion bonded to said outer rim of said disk, whereby the edge of the bond is everywhere accessible for inspection, cleaning and surface modification; and seal plate means for sealing far end of said cavity secured between said rim and said blade platform.
Claim 2
Dependent Claim
121 words
A bladed turbine disk comprising: a disk having a substantially continuous impervious outer rim; a plurality of hollow air cooled turbine blades, including air outlet openings, and an integral blade platform; a cavity between adjacent blades below said blade platform and above said outer rim; each blade having a continuous impervious base, an air inlet opening on one side of said blade in fluid communication with said cavity and below said platform; and the base of each blade diffusion bonded to said outer rim of said disk, whereby the edge of the bond is everywhere accessible for inspection, cleaning and surface modification; and seal plate means for sealing far end of said cavity secured between said rim and said blade platform.
Claim 3
Dependent Claim
31 words
A bladed turbine disk as in claim 1: a slightly raised plateau on said outer rim of said disk at each blade location, whereby access to the bond area is facilitated.
Claim 4
Dependent Claim
32 words
A bladed turbine disk as in claim 1: a cavity seal plate entrapped between adjacent blades, for sealing the far end of said cavity and the junction of the adjacent blade platforms.
Claim 5
Dependent Claim
51 words
A bladed turbine disk as in claim 3: the live rim of said disk tapered outwardly in the axial direction with respect to said blade platform; and said cavity seal plate means for sealing the far end of said cavity comprising an edge wedged between said rim and said blade platform.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |