US3294366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blades for gas turbine engines
Assignee: Rolls Royce PLC
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Filing: 1966-01-20
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Granted: 1966-12-27
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Expires: 1986-01-20
Abstract
No abstract record available.
Inventors
- 👤 Coplin John Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:01
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/14; F01D5/147; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D29/324; F05; F05D; F05D2240/00; F05D2240/20; F05D2240/30; F05D2240/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN COMBINATION: A PLURALITY OF ROTOR BLADES AND AN AXIAL FLOW COMPRESSOR DISC FOR A GAS TURBINE ENGINE, EACH OF SAID ROTOR BLADES COMPRISING AN AEROFOIL PART INCLUDING METAL PORTIONS AND THERMOSETTING PLASTIC PORTIONS BONDED TO EACH OTHER TO FORM A RIGID UNIT, SAID METAL PORTIONS OF EACH OF SAID BLADES BEING EXTENDED TO FORM A ROOT PORTION HAVING A RADIALLY INNER END OF A CONVEX ARCUATE PROFILE, SAID COMPRESSOR DISC HAVING A CORRESPONDING NUMBER OF CONCAVE ARCUATE DEPRESSIONS IN ITS RIM COMPLEMENTARY TO THE CONVEX ARCUATE PROFILE OF THE INNER END OF THE ROOT PORTIONS OF EACH OF SAID BLADES, AND MEANS OF INTEGRALLY
Claim 2
Dependent Claim
105 words
IN COMBINATION: A PLURALITY OF ROTOR BLADES AND AN AXIAL FLOW COMPRESSOR DISC FOR A GAS TURBINE ENGINE, EACH OF SAID ROTOR BLADES COMPRISING AN AEROFOIL PART INCLUDING METAL PORTIONS AND THERMOSETTING PLASTIC PORTIONS BONDED TO EACH OTHER TO FORM A RIGID UNIT, SAID METAL PORTIONS OF EACH OF SAID BLADES BEING EXTENDED TO FORM A ROOT PORTION HAVING A RADIALLY INNER END OF A CONVEX ARCUATE PROFILE, SAID COMPRESSOR DISC HAVING A CORRESPONDING NUMBER OF CONCAVE ARCUATE DEPRESSIONS IN ITS RIM COMPLEMENTARY TO THE CONVEX ARCUATE PROFILE OF THE INNER END OF THE ROOT PORTIONS OF EACH OF SAID BLADES, AND MEANS OF INTEGRALLY
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |