US3560107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled airfoil
Assignee: Motors Liquidation Co
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Filing: 1968-09-25
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Granted: 1971-02-02
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Expires: 1988-09-25
Abstract
Abstract A CONVECTION COOLED AIRFOIL FOR HIGH TEMPERATURE TURBOMACHINES IS OF LAMINATED STRUCTURE WITH AN OUTER LAYER OF THORIA DISPERSED NICKEL CHROME ALLOY AND AN INNER LAYER OF HASTELLOY X. THESE ARE BONDED TOGETHER. GROOVES IN THE INNER SURFACE OF THE OUTER LAYER SURFACE OF THE INNER LAYER REGISTER TO PROVIDE PASSASGES EXTENDING CHORDWISE OF THE BLADE IN THE FACES OF THE BLADE. HOLES IN THE LAYERS CONNECT THESE PASSAGES TO THE INNER AND OUTER SURFACES OF THE BLADE TO PROVIDE FOR CIRCULATION OF COOLING AIR THROUGH THE BLADE WALLS IN THE DIRECTION FROM THE LEADING TO THE TRAILING EDGE.
Inventors
- 👤 Harold E Helms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:55
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; B; B23; B23P; B23P15/00; B23P15/04; F01D5/181; F01D5/182; F01D5/184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |