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US3918830A
Expired / Lapsed
US
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Motor-pump aggregate for use in nuclear reactors
Assignee: Sulzer KSB Kernkraftwerkspumpen GmbH
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Filing: 1973-06-04
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Granted: 1975-11-11
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Expires: 1993-06-04
Abstract
Abstract A motor-pump aggregate for use in nuclear reactor plants wherein the motor shaft carries a flywheel and is connected to the pump shaft by a coupling having two flanges one of which is mounted on the motor shaft and the other of which is mounted on the pump shaft and receives torque from the one flange by way of claws. An overrunning clutch is installed between the motor shaft and the one flange so that the pump shaft can rotate at a speed exceeding the speed of the motor shaft, for example, due to turbine effect in the event of breakage of one of the main lines for coolant. A blocking device prevents rotation of the motor shaft counter to the direction in which the shafts rotate when the motor drives the pump.
Inventors
- 👤 Wolfgang Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:01
CPC Classifications
F; F16; F16D; F16D47/00; F16D47/02; F16D41/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
An aggregate, particularly for use in nuclear reactor plants, comprising a prime mover having an output shaft rotatable in a predetermined direction; a fly wheel fixed to said output shaft for rotation therewith; a pump having a second shaft coaxial with said output shaft; torque Transmitting means between said shaft including a coupling having a first flange on said output shaft, a second flange on said second shaft, means for rotating said second flange in response to rotation of said first flange in a predetermined direction, and overrunning clutch means interposed between one of said flanges and the respective shaft and arranged to permit rotation of said second shaft relative to said output shaft when the speed of said second shaft in said predetermined direction exceeds the speed of said output shaft; a stationary support; first antifriction bearing means interposed between said stationary support and said one flange; and second antifriction bearing means interposed between said one flange and the respective shaft.
Claim 2
Dependent Claim
162 words
An aggregate, particularly for use in nuclear reactor plants, comprising a prime mover having an output shaft rotatable in a predetermined direction; a fly wheel fixed to said output shaft for rotation therewith; a pump having a second shaft coaxial with said output shaft; torque Transmitting means between said shaft including a coupling having a first flange on said output shaft, a second flange on said second shaft, means for rotating said second flange in response to rotation of said first flange in a predetermined direction, and overrunning clutch means interposed between one of said flanges and the respective shaft and arranged to permit rotation of said second shaft relative to said output shaft when the speed of said second shaft in said predetermined direction exceeds the speed of said output shaft; a stationary support; first antifriction bearing means interposed between said stationary support and said one flange; and second antifriction bearing means interposed between said one flange and the respective shaft.
Claim 3
Dependent Claim
15 words
An aggregate as defined in claim 1, wherein said prime mover is an electric motor.
Claim 4
Dependent Claim
27 words
An aggregate as defined in claim 1, further comprising blocking means for preventing the rotation of at least one of said shafts counter to said predetermined direction.
Claim 5
Dependent Claim
20 words
An aggregate as defined in claim 1, wherein said output shaft is located at a level above said second shaft.
Claim 6
Dependent Claim
24 words
An aggregate as defined in claim 1, wherein said means for rotating said second flange comprises mating projections including projections provided on said flanges.
Claim 7
Dependent Claim
35 words
An aggregate as defined in claim 1, further comprising blocking means for preventing rotation of said one flange counter to said predetermined direction, said blocking means being coaxial with and surrounding said overrunning clutch means.
Claim 8
Dependent Claim
31 words
An aggregate as defined in claim 1, further comprising radial and thrust bearing means for the shaft including said one flange and radial bearing means for the other of said shafts.
Claim 9
Dependent Claim
63 words
An aggregate as defined in claim 6, wherein said first and said second antifriction bearing means each comprise a pair of antifriction bearings axially spaced from each other, said overrunning clutch being located between the pair of antifriction bearings of said second antifriction bearing means and said blocking means being located between the pair of antifriction bearings of said first antifriction bearing means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |