US4509900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine rotor
Assignee: Toshiba Corp
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Filing: 1983-10-14
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Granted: 1985-04-09
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Expires: 2003-10-14
Abstract
Abstract A turbine rotor has a shaft, a plurality of wheel discs shrunk-fit on said shaft along the axial direction thereof, said wheel discs being provided with blades on the outer circumference thereof. A plurality of coupling members are disposed between the wheel discs except the ones disposed most downstream, for coupling the wheel discs to each other. At least one coupling means is disposed between the wheel disc disposed most downstream of the shaft.
Inventors
- 👤 Masachika Odawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:35
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
39 words
In a turbine having a fluid flow, a turbine rotor comprising: a shaft; a plurality of wheel discs shrunk-fit on said shaft along the axial direction thereof, said wheel discs being provided with blades on the outer circumference thereof;
Claim 2
Dependent Claim
39 words
In a turbine having a fluid flow, a turbine rotor comprising: a shaft; a plurality of wheel discs shrunk-fit on said shaft along the axial direction thereof, said wheel discs being provided with blades on the outer circumference thereof;
Claim 3
Dependent Claim
58 words
a plurality of first coupling members disposed between each of first wheel discs defined by at least the upsteam ones of said wheel discs for coupling said wheel discs to each other, and at least one second coupling member disposed between at least one second wheel disc disposed at the downstream end of said shaft and said shaft.
Claim 4
Dependent Claim
58 words
a plurality of first coupling members disposed between each of first wheel discs defined by at least the upsteam ones of said wheel discs for coupling said wheel discs to each other, and at least one second coupling member disposed between at least one second wheel disc disposed at the downstream end of said shaft and said shaft.
Claim 5
Dependent Claim
51 words
The turbine rotor as recited in claim 1, wherein said first wheel discs each include a hub member with a wheel radial key way on the side of said first wheel disc; and said first coupling member includes a wheel radial key to be coupled with said wheel radial key way.
Claim 6
Dependent Claim
94 words
The turbine rotor as recited in claim 1, which further comprises an additional wheel disc axially spaced from said first wheel discs in said upstream direction and shrunk-fit on said shaft, said additional wheel disc having a hub member with a key way on the side thereof, and a stopping means arranged adjacent to said additional wheel disc and shrunk-fit on said shaft, said stopping means including a third key adapted to coupled with said key way of said additional wheel disc and a bore key mounted between said stopping means and said shaft.
Claim 7
Dependent Claim
32 words
The turbine rotor as recited in claim 3, including a disc bore key positioned between said additional wheel disc and said shaft for restraining the axial movement of said additional wheel disc.
Claim 8
Dependent Claim
38 words
The turbin rotor as recited in claim 2, wherein said hub members each include a annular groove, and each said wheel radial key has a projection portion on an inner end thereof for fitting into said annular groove.
References Cited (Backward Citations)
CA576536A
Cited
US1107238A
Cited
GB219655A
Cited
DE513004C
Cited
US2497151A
Cited
US3070348A
Cited
US4029437A
Cited
JPS5385205A
Cited
US4330236A
Cited
JPS5741403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |