US3850546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbomachine rotor
Assignee: Motors Liquidation Co
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Filing: 1973-03-22
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Granted: 1974-11-26
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Expires: 1993-03-22
Abstract
Abstract A rotor stage of an axial-flow turbine includes a bladed wheel made up of circumferentially abutting radially extending elements, each of which has a blade at its outer end and a sector of the wheel hub at its inner end. The wheel hub sectors are mounted between abutments on a shaft. The wheel sectors may be united by brazing or welding. An interlock is provided between adjacent wheel elements by a dovetail connection between the flanks of the elements or by separate keys engaging in slots in the flanks of the elements.
Inventors
- 👤 G Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:49
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/3069; F01D5/02; F01D5/06; F01D5/066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A turbomachine rotor stage comprising, in combination, a shaft, a first abutment means on the shaft, a second abutment means on the shaft movable axially of the shaft, a wheel including a hub held on the shaft between the abutment means, and means cooperating with the shaft and the second abutment means to urge the abutment means together against the wheel hub; the wheel comprising a ring of laterally abutting elements extending radially from the shaft, each element including a sector of the hub, a connecting portion extending outwardly from the hub sector, a platform at the outer end of the connecting portion, and a blade extending from the platform, the hub sectors being mechanically interlocked directly with and bonded directly to the adjacent hub sectors.
Claim 2
Dependent Claim
126 words
A turbomachine rotor stage comprising, in combination, a shaft, a first abutment means on the shaft, a second abutment means on the shaft movable axially of the shaft, a wheel including a hub held on the shaft between the abutment means, and means cooperating with the shaft and the second abutment means to urge the abutment means together against the wheel hub; the wheel comprising a ring of laterally abutting elements extending radially from the shaft, each element including a sector of the hub, a connecting portion extending outwardly from the hub sector, a platform at the outer end of the connecting portion, and a blade extending from the platform, the hub sectors being mechanically interlocked directly with and bonded directly to the adjacent hub sectors.
Claim 3
Dependent Claim
115 words
A turbomachine rotor stage comprising, in combination, a shaft, first and second abutment means on the shaft defining between them a circumferential slot, and a wheel including a hub held within the slot, the wheel comprising a ring of laterally abutting elements extending radially from the shaft, each element including a sector of the hub, a connecting portion extending outwardly from the hub sector, a platform at the outer end of the connecting portion, and a blade extending from the platform, the element hub sectors also including means providing a direct mechanical interlock between abutting flanks of the elements blocking relative radial movement of the adjacent elements and adjacent hub sectors being bonded directly together.
Claim 4
Dependent Claim
115 words
A turbomachine rotor stage comprising, in combination, a shaft, first and second abutment means on the shaft defining between them a circumferential slot, and a wheel including a hub held within the slot, the wheel comprising a ring of laterally abutting elements extending radially from the shaft, each element including a sector of the hub, a connecting portion extending outwardly from the hub sector, a platform at the outer end of the connecting portion, and a blade extending from the platform, the element hub sectors also including means providing a direct mechanical interlock between abutting flanks of the elements blocking relative radial movement of the adjacent elements and adjacent hub sectors being bonded directly together.
References Cited (Backward Citations)
US532232A
Cited
US648158A
Cited
FR671512A
Cited
US2641440A
Cited
US2757900A
Cited
US2840299A
Cited
US3003745A
Cited
FR1330656A
Cited
US3294366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |