US3723023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Independent self adjusting vibration damper
Assignee: United States Department of the Air Force
•
Filing: 1971-05-05
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Granted: 1973-03-27
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Expires: 1991-05-05
Abstract
Abstract The torque-transmitting connections between a turbine rotor and the individual turbine blades include centrifugally responsive vibration damping elements having limited freedom to swing an individual coupling shafts between plates securing each blade to the rotor assembly. The torque transfer value varies as the speed varies, to damp vibrations due to speed fluctuations.
Inventors
- 👤 V Crick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:40
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A self adjusting vibration dampering system for turbine blades comprising: a shaft; a first and second damper assembly mounted at opposite ends of said shaft and having an interference fit therewith, said assemblies being rectangular on one end and having a plurality of contact surfaces on the opposite end and adapted to contact the base of adjacent turbine blades upon movement of the turbine rotor disk.
Claim 2
Dependent Claim
66 words
A self adjusting vibration dampering system for turbine blades comprising: a shaft; a first and second damper assembly mounted at opposite ends of said shaft and having an interference fit therewith, said assemblies being rectangular on one end and having a plurality of contact surfaces on the opposite end and adapted to contact the base of adjacent turbine blades upon movement of the turbine rotor disk.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |