US3178101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow compressors
Assignee: Rolls Royce PLC
•
Filing: 1962-04-27
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Granted: 1965-04-13
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Morley Frederick Willia Walton
- 👤 Davies David Omri
- 👤 Blackhurst Robert Vanghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:49
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/282; F01D5/30; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D29/322; F04D29/324; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN AN AXIAL FLOW COMPRESSOR ROTOR HAVING A PLURALITY OF RADIALLY OURWARDLY EXTENDING BLADES, SAID BLADES HAVING WORKING PORTIONS OF AEROFOIL CROSS-SECTION, AND HAVING ROOT PORTIONS AT ONE END OF SAID WORKING PORTIONS, SAID WORKING PORTIONS HAVING CURVED MEAN PROFILE CAMBER RADII AND BEING FORMED FROM REINFORCED THERMO-SETTING RESINOUS MATERIAL, EACH OF SAID BLADES HAVING A METALLIC STRENGHTENING INSERT IMBEDDED WITHIN AND SECURED TO THE ROOT PORTION OF SAID BLADE, SAID METALLIC STRENGTHENING INSERT LYING IN A CHORDWISE SENSE AND BEING CURVED SO THAT IT LIES PARALLEL TO THE MEAN PROFILE CAMBER RADIUS OF THE WORKING
Claim 2
Dependent Claim
96 words
IN AN AXIAL FLOW COMPRESSOR ROTOR HAVING A PLURALITY OF RADIALLY OURWARDLY EXTENDING BLADES, SAID BLADES HAVING WORKING PORTIONS OF AEROFOIL CROSS-SECTION, AND HAVING ROOT PORTIONS AT ONE END OF SAID WORKING PORTIONS, SAID WORKING PORTIONS HAVING CURVED MEAN PROFILE CAMBER RADII AND BEING FORMED FROM REINFORCED THERMO-SETTING RESINOUS MATERIAL, EACH OF SAID BLADES HAVING A METALLIC STRENGHTENING INSERT IMBEDDED WITHIN AND SECURED TO THE ROOT PORTION OF SAID BLADE, SAID METALLIC STRENGTHENING INSERT LYING IN A CHORDWISE SENSE AND BEING CURVED SO THAT IT LIES PARALLEL TO THE MEAN PROFILE CAMBER RADIUS OF THE WORKING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |