US3171631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine blade
Assignee: Motors Liquidation Co
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Filing: 1962-12-05
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Granted: 1965-03-02
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Expires: 1982-12-05
Abstract
No abstract record available.
Inventors
- 👤 Robert H Aspinwall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:43
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: 2
Claim 1
Independent Claim
121 words
A TURBINE BLADE OR THE LIKE COMPRISING A HOLLOW AIRFOIL STRUCTURE INCLUDING CONCAVE AND CONVEX WALLS AND LEADING AND TRAILING EDGES FORMING A FIRST COOLANT PASSAGE THEREBETWEEN LONGITUDINALLY THEREOF AND AT LEAST TWO ELONGATED STRUTS EXTENDING BETWEEN SAID CONCAVE AND CONVEX WALLS, SAID STRUTS DEFINING A SECOND PASSAGE THEREBETWEEN HAVING AN INTAKE END AND AN EXHAUST END, SAID EXHAUST END BEING INCLINED TOWARD ONE OF SAID EDGES WHEREBY SOME OF THE COOLANT IS DIRECTED ON TO SAID ONE EDGE, THE INTAKE END OF SAID PASSAGE HAVING A SUBSTANTIALLY GREATER CROSSSECTIONAL AREA THAN SAID EXHAUST END WHEREBY THE COOLANT FLOWING THROUGH SAID PASSAGE IS SUBJECTED TO A NOZZLE EFFECT AND THE COOLANT IS CAUSED TO IMPINGE UPON SAID EDGE OF THE BLADE.
Claim 2
Dependent Claim
121 words
A TURBINE BLADE OR THE LIKE COMPRISING A HOLLOW AIRFOIL STRUCTURE INCLUDING CONCAVE AND CONVEX WALLS AND LEADING AND TRAILING EDGES FORMING A FIRST COOLANT PASSAGE THEREBETWEEN LONGITUDINALLY THEREOF AND AT LEAST TWO ELONGATED STRUTS EXTENDING BETWEEN SAID CONCAVE AND CONVEX WALLS, SAID STRUTS DEFINING A SECOND PASSAGE THEREBETWEEN HAVING AN INTAKE END AND AN EXHAUST END, SAID EXHAUST END BEING INCLINED TOWARD ONE OF SAID EDGES WHEREBY SOME OF THE COOLANT IS DIRECTED ON TO SAID ONE EDGE, THE INTAKE END OF SAID PASSAGE HAVING A SUBSTANTIALLY GREATER CROSSSECTIONAL AREA THAN SAID EXHAUST END WHEREBY THE COOLANT FLOWING THROUGH SAID PASSAGE IS SUBJECTED TO A NOZZLE EFFECT AND THE COOLANT IS CAUSED TO IMPINGE UPON SAID EDGE OF THE BLADE.
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |