US3732031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled airfoil
Assignee: Motors Liquidation Co
•
Filing: 1970-06-17
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Granted: 1973-05-08
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Expires: 1990-06-17
Abstract
Abstract A cooled turbine blade or vane for high-temperature machines. To obtain maximum strength and oxidation resistance and the best cooling characteristics, the airfoil has a core of cast super alloy covered by a porous facing of wrought super alloy sheet, the core providing passages to transmit the cooling fluid to the facing. The effective cooling and resistance to corrosion are due primarily to the facing and the strength and resistance to centrifugal, buffeting, or ballooning loads are contributed primarily by the cast core.
Inventors
- 👤 C Bowling
- 👤 G Meginnis
- 👤 R Schwedland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:04
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/182; F01D5/184; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T29/49341
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A member as defined in claim 1 in which the facing is a lamiNated structure of more than one layer.
Claim 2
Dependent Claim
21 words
A member as defined in claim 1 in which the core and facing are of nickel base or cobalt base alloys.
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |