Patent US3752599A successfully refreshed from Google Patents.
US3752599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bucket vibration damping device
Assignee: General Electric Co
•
Filing: 1971-03-29
•
Granted: 1973-08-14
•
Expires: 1991-03-29
Abstract
Abstract A bucket vibration damping device for a turbomachine including a composite button disposed between relatively vibratory, closely adjacent blade parts in a cutout having opposite portions formed in the closely adjacent opposing edge surfaces of the blade parts. When the turbo machine is operating, centrifugal forces thrust the button radially outward within the cutout so that the button will frictionally engage the adjacent blade parts to minimize relative vibrational movement. The geometry of the button is such that it tends to provide equal frictional forces on each blade part.
Inventors
- 👤 E Pace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:19
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/22; F01D5/225; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A bucket vibration damping device, for a turbo-machine rotor including a plurality of bucket parts circumferentially mounted about the turbine rotor, each bucket part being mounted adjacent another bucket part to provide closely adjacent opposing edge surfaces; each edge surface formed with a cutout portion and opposing cutout portions forming a cavity complementary to said bucket vibration damping device; said bucket vibration damping device comprising: a composite button, including a body portion and a crown portion, inserted into each cavity formed in adjacent opposing edge surfaces; said body portion diameter greater than said crown portion diameter and said body portion having a rounded circumference; and, the composite button mounted with the crown portion radially outward from said body portion.
Claim 2
Dependent Claim
119 words
A bucket vibration damping device, for a turbo-machine rotor including a plurality of bucket parts circumferentially mounted about the turbine rotor, each bucket part being mounted adjacent another bucket part to provide closely adjacent opposing edge surfaces; each edge surface formed with a cutout portion and opposing cutout portions forming a cavity complementary to said bucket vibration damping device; said bucket vibration damping device comprising: a composite button, including a body portion and a crown portion, inserted into each cavity formed in adjacent opposing edge surfaces; said body portion diameter greater than said crown portion diameter and said body portion having a rounded circumference; and, the composite button mounted with the crown portion radially outward from said body portion.
References Cited (Backward Citations)
US1554614A
Cited
US2310412A
Cited
US2349187A
Cited
US2942843A
Cited
SU128868A1
Cited
US3084343A
Cited
US3292900A
Cited
DE1426798A1
Cited
US3396905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |