Patent US734710A successfully refreshed from Google Patents.
Patent US4820945A successfully refreshed from Google Patents.
US4820945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine rotor with superconducting winding
Assignee: LENINGRADSKOE PROIZVODSTVENNOE ELEKTROMASHINO-STROITELNOE OBIEDINENIE "ELEKTROSILA"
•
Filing: 1987-11-05
•
Granted: 1989-04-11
•
Expires: 2007-11-05
Abstract
Abstract Disclosed is a dynamoelectric machine rotor with a superconducting winding, including an inner shaft formed by a superconducting winding supporting structure, an outer shaft formed by a cylindric shell and end extensions fixed to the ends thereof, an electromagnetic shield including an inner cylinder made of a material with high electrical conductivity and an outer cylinder made of a material with high mechanical strength, the electromagnetic shield being fitted on the outer shaft with a radial interference, and a layer of a solid lubricant interposed between the adjoining surfaces of the electromagnetic shield and outer shaft.
Inventors
- 👤 Garri M. Khutoretsky
- 👤 Vladimir M. Fridman
- 👤 Galina A. Zagorodnaya
- 👤 Leonid V. Maximov
- 👤 Jury G. Tjurin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:39
CPC Classifications
H; H02; H02K; H02K55/00; H02K55/02; H02K55/04; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A dynamoelectric machine rotor with a superconducting winding, comprising: an inner shaft including a superconducting winding supporting structure; an outer shaft including a cylindric shell for hermetic encapsulating the rotor and two end extensions rigidly fixed to said shell at both ends thereof for supporting the rotor in bearings; an electromagnetic shield including an inner cylinder made of a material with high electrical conductivity and an outer cylinder made of a material with high mechanical strength, said electromagnetic shield being fitted on said outer shaft with a radial interference such that said electromagnetic shield and said outer shaft have surface areas adjoining each other; and a layer of a solid lubricant interposed between said surface areas of said electromagnetic shield and said surface areas of said outer shaft, whereby a maximum magnitude of a torsional moment transmitted from said electromagnetic shield to said outer shaft under abnormal conditions of operation of a dynamoelectric machine is reduced and stabilized.
Claim 2
Dependent Claim
158 words
A dynamoelectric machine rotor with a superconducting winding, comprising: an inner shaft including a superconducting winding supporting structure; an outer shaft including a cylindric shell for hermetic encapsulating the rotor and two end extensions rigidly fixed to said shell at both ends thereof for supporting the rotor in bearings; an electromagnetic shield including an inner cylinder made of a material with high electrical conductivity and an outer cylinder made of a material with high mechanical strength, said electromagnetic shield being fitted on said outer shaft with a radial interference such that said electromagnetic shield and said outer shaft have surface areas adjoining each other; and a layer of a solid lubricant interposed between said surface areas of said electromagnetic shield and said surface areas of said outer shaft, whereby a maximum magnitude of a torsional moment transmitted from said electromagnetic shield to said outer shaft under abnormal conditions of operation of a dynamoelectric machine is reduced and stabilized.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |