US3610778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for rotor blades in a rotor
Assignee: Sulzer AG
•
Filing: 1969-04-03
•
Granted: 1971-10-05
•
Expires: 1989-04-03
Abstract
Abstract The blades are held in slots of the rotor along with baffle elements which are placed between each pair of blades. Each element is elastically connected in a yieldable manner to each blade of a pair of blades at points on opposite sides of the element while simultaneously filling the slot to prevent leakage between the blades. The elements can be slotted or provided with elevations at opposite ends to enhance the yieldability.
Inventors
- 👤 Peter Suter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:29
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/3007; F01D5/12; F01D5/22; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
The combination of a rotor having a plurality of circumferentially spaced slots; a plurality of turbine blades mounted in respective slots of said rotor, each blade having a base received in a respective slot, a baseplate and a necklike extension between said base and baseplate; and a pluraliTy of elements, each said element being of approximately the same axial length as said necklike extensions and positioned between a pair of adjacent blades between said necklike extensions, each said element having a pair of spaced-apart elevations projecting therefrom, one of said elevations contacting one blade at a first contact point and the other of said elevations contacting the other blade of said pair of blades at a second contact point, and each said element being elastically yieldable between said points of contact and said elevations.
Claim 2
Dependent Claim
134 words
The combination of a rotor having a plurality of circumferentially spaced slots; a plurality of turbine blades mounted in respective slots of said rotor, each blade having a base received in a respective slot, a baseplate and a necklike extension between said base and baseplate; and a pluraliTy of elements, each said element being of approximately the same axial length as said necklike extensions and positioned between a pair of adjacent blades between said necklike extensions, each said element having a pair of spaced-apart elevations projecting therefrom, one of said elevations contacting one blade at a first contact point and the other of said elevations contacting the other blade of said pair of blades at a second contact point, and each said element being elastically yieldable between said points of contact and said elevations.
Claim 3
Dependent Claim
28 words
The combination as set forth in claim 1, wherein said element includes a pair of spaced plates between said pair of blades and a crosspiece joining said plates.
Claim 4
Dependent Claim
45 words
The combination as set forth in claim 2, wherein each baseplate is disposed radially over said elements and wherein said crosspiece mounts said elevations on an upper surface thereof with each said elevation extending along not more than one-quarter of the length of said crosspiece.
Claim 5
Dependent Claim
21 words
The combination as set forth in claim 3, wherein said crosspiece includes at least one slot therein between said contact points.
Claim 6
Dependent Claim
18 words
The combination as set forth in claim 3, wherein said crosspiece has a reduced cross section centrally thereof.
Claim 7
Dependent Claim
30 words
The combination as set forth in claim 2, wherein one of said plates of each element has a lug projecting therefrom in contact with the side of an adjacent blade.
Claim 8
Dependent Claim
23 words
The combination as set forth in claim 1, wherein said element includes an axial slot in the upper part between said contact points.
Claim 9
Dependent Claim
17 words
The combination as set forth in claim 1, wherein said slots are obliquely disposed in said rotor.
Claim 10
Dependent Claim
17 words
The combination as set forth in claim 1 wherein said slots are axially disposed in said rotor.
References Cited (Backward Citations)
US2669383A
Cited
US3008689A
Cited
US2942842A
Cited
US3037741A
Cited
US3001760A
Cited
US3119595A
Cited
US3112915A
Cited
US3294364A
Cited
US3266771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |