Patent US3666376A successfully refreshed from Google Patents.
US3666376A
Expired / Lapsed
US
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Turbine blade damper
Assignee: RTX Corp
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Filing: 1971-01-05
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Granted: 1972-05-30
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Expires: 1991-01-05
Abstract
Abstract A VIBRATION DAMPER FOR USE IN A TURBINE ROTOR OF A HIGH TEMPERATURE GAS TURBINE IS DISCLOSED. THE DAMPER WHICH IS X SHAPED IN OVERALL CROSS SECTION WITH A PAIR OF DAMPING LEGS, A PROTRUDING ASSEMBLY LUG, AND A PAIR OF POSITIONING LEGS IS LOCATED IN THE TURBINE ROTOR IN A CAVITY FORMED BETWEEN THE EXTENDED NECKS OF A PAIR OF ADJACENT TURBINE BLADES IN ONE DIRECTION AND END COVER PLATES IN THE OTHER DIRECTION.
Inventors
- 👤 Nicholas Damlis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:38
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S416/00; Y10S416/50
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |