US5246341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine blade trailing edge cooling construction
Assignee: RTX Corp
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Filing: 1992-07-06
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Granted: 1993-09-21
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Expires: 2012-07-06
Abstract
Abstract Internal cooling of the trailing edge of the airfoil of the turbine blade for a gas turbine engine includes a cascade formed from juxtaposed rows of longitudinally extending spaced airfoil shaped vanes or ribs leading cooling air from a supply source through the space between adjacent vanes and discharging out of the blade.
Inventors
- 👤 Kenneth B. Hall
- 👤 Thomas A. Auxier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:06
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F05; F05D; F05D2240/00; F05D2240/10; F05D2240/12; F05D2240/126; F05D2260/00; F05D2260/20; F05D2260/221; F05D2260/2212; F05D2260/2214; F05D2260/22141
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
An airfoil of a hollow turbine blade including a trailing edge comprising a first row of airfoil shaped vanes extending longitudinally internally of said airfoil, a second row of airfoil shaped vanes extending longitudinally internally of said airfoil and adjacent said trailing edge and being juxtaposed relative to said first row of airfoil shaped vanes, and passageways internally of said airfoil for leading cooling air from a source through a longitudinal passageway and laterally in a cascaded manner through the spaces between adjacent vanes in said first row or airfoil shaped vanes, through a second longitudinal passageway, through spaces between adjacent vanes in said second row of airfoil vanes to discharge out of the trailing edge of said airfoil through discharge ports formed in said airfoil.
Claim 2
Dependent Claim
126 words
An airfoil of a hollow turbine blade including a trailing edge comprising a first row of airfoil shaped vanes extending longitudinally internally of said airfoil, a second row of airfoil shaped vanes extending longitudinally internally of said airfoil and adjacent said trailing edge and being juxtaposed relative to said first row of airfoil shaped vanes, and passageways internally of said airfoil for leading cooling air from a source through a longitudinal passageway and laterally in a cascaded manner through the spaces between adjacent vanes in said first row or airfoil shaped vanes, through a second longitudinal passageway, through spaces between adjacent vanes in said second row of airfoil vanes to discharge out of the trailing edge of said airfoil through discharge ports formed in said airfoil.
Claim 3
Dependent Claim
47 words
An airfoil as claimed in claim 1 wherein said turbine blade includes a root portion and a tip portion, wherein each of said vanes in said first row of vanes includes a leading edge and said leading edge is turned in a direction facing said root portion.
Claim 4
Dependent Claim
34 words
An airfoil as claimed in claim 2 wherein each of said vanes in said second row of vanes includes a trailing edge that is oriented in a direction facing the tip of said airfoil.
References Cited (Backward Citations)
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Cited
US3799696A
Cited
DE2346341A1
Cited
US4775296A
Cited
JPS60135606A
Cited
US4786233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-20 | 1997-03-22 | 1997-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-20 | 2001-03-22 | 2001-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-20 | 2005-03-22 | 2005-09-21 | $7700.00 | Window Closed / Lapsed |