US3266771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbines and compressors
Assignee: Rolls Royce PLC
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Filing: 1964-11-27
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Granted: 1966-08-16
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Morley Frederick Willia Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:36
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/24; F01D5/30; F01D5/3007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A TURBINE HAVING A ROTOR DISC, A PLURALITY OF ANGULARLY SPACED APART ROTOR BLADES HAVING ROOT PORTIONS MOUNTED IN THE ROTOR DISC, EACH OF SAID ROTOR BLADES HAVING A PLATFORM AND A RADIALLY EXTENDING SHANK, THE PLATFORM BEING DISPOSED RADIALLY OUTWARDLY OF AND BEING CONNECTED TO THE RESPECTIVE ROOT PORTION BY THE SHANK, AND A PLURALITY OF FLEXIBLE CHANNEL MEMBERS BEING SUBSTANTIALLY USHAPED IN SECTION AND EACH HAVING SIDE WALLS CONNECTED BY A BASE WALL, EACH OF SAID CHANNEL MEMBERS HAVING THE FREE ENDS OF ITS SIDE WALLS IN SPRING LOADED ENGAGEMENT WITH THE CIRCUMFERENCE OF SAID ROTOR DISC AND ITS SIDE WALLS SPACED FROM THE SHANKS OF ADJACENT BLADES, SAID FLEXIBLE CHANNEL MEMBERS BEING URGED BY CENTRIFUGAL FORCE DURING ROTATION OF SAID ROTOR DISC SO THAT THE BASE WALL OF THE SAME ENGAGES THE RADIALLY INNER SURFACE OF EACH PLATFORM TO THEREBY DAMPEN VIBRATION OF THE ROTOR BLADES WHICH OCCUR IN OPERATION.
Claim 2
Dependent Claim
153 words
A TURBINE HAVING A ROTOR DISC, A PLURALITY OF ANGULARLY SPACED APART ROTOR BLADES HAVING ROOT PORTIONS MOUNTED IN THE ROTOR DISC, EACH OF SAID ROTOR BLADES HAVING A PLATFORM AND A RADIALLY EXTENDING SHANK, THE PLATFORM BEING DISPOSED RADIALLY OUTWARDLY OF AND BEING CONNECTED TO THE RESPECTIVE ROOT PORTION BY THE SHANK, AND A PLURALITY OF FLEXIBLE CHANNEL MEMBERS BEING SUBSTANTIALLY USHAPED IN SECTION AND EACH HAVING SIDE WALLS CONNECTED BY A BASE WALL, EACH OF SAID CHANNEL MEMBERS HAVING THE FREE ENDS OF ITS SIDE WALLS IN SPRING LOADED ENGAGEMENT WITH THE CIRCUMFERENCE OF SAID ROTOR DISC AND ITS SIDE WALLS SPACED FROM THE SHANKS OF ADJACENT BLADES, SAID FLEXIBLE CHANNEL MEMBERS BEING URGED BY CENTRIFUGAL FORCE DURING ROTATION OF SAID ROTOR DISC SO THAT THE BASE WALL OF THE SAME ENGAGES THE RADIALLY INNER SURFACE OF EACH PLATFORM TO THEREBY DAMPEN VIBRATION OF THE ROTOR BLADES WHICH OCCUR IN OPERATION.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |