US3353043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductor cooling system for dynamoelectric machine rotor
Assignee: General Electric Co
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Filing: 1965-05-14
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Granted: 1967-11-14
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Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Donald R Albright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:48
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A DYNAMOELECTRIC MACHINE COMPRISING A ROTOR MEMBER HAVING A SHAFT PORTION, A SEALED CASING SURROUNDING SAID ROTOR MEMBER AND THROUGH WHICH ONE END OF SAID SHAFT PORTION PROJECTS, AND A FAN MEANS MOUNTED ON SAID ROTOR WITHIN SAID CASING, SAID SHAFT PORTION HAVING A CENTRAL AXIAL CYLINDRICAL BORE, A PLURALITY OF CONNECTION BARS LONGITUDINALLLY DISPOSED WITHIN SAID AXIAL BORE, INSULATION SEPARATING SAID CONNECTION BARS FROM EACH OTHER AND FROM THE WALL OF SAID AXIAL BORE, SAID CONNECTION BARS AND SAID INSULATION DEFINING LONGITUDINAL PASSAGES ALONG SAID AXIAL BORE, AND A SEAL ON SAID ONE END OF SAID SHAFT PORTION CLOSING OFF THE BORE TO DEFINE A CHAMBER COMMON TO ALL OF SAID LONGITUDINAL PASSAGES, SUCH DYNAMOELECTRIC MACHINE CHARACTERIZED BY THE FOLLOWING IMPROVEMENT COMPRISING: A PLURALITY OF RADIAL PASSAGES DEFINED BY THE PART OF SAID SHAFT PORTION INSIDE SAID CASING, EACH OF SAID RADIAL PASSAGES PERMITTING COMMUNICATION BETWEEN THE INTERIOR OF SAID CASING AND ONE OF SAID LONGITUDINAL PASSAGES,
Claim 2
Dependent Claim
158 words
A DYNAMOELECTRIC MACHINE COMPRISING A ROTOR MEMBER HAVING A SHAFT PORTION, A SEALED CASING SURROUNDING SAID ROTOR MEMBER AND THROUGH WHICH ONE END OF SAID SHAFT PORTION PROJECTS, AND A FAN MEANS MOUNTED ON SAID ROTOR WITHIN SAID CASING, SAID SHAFT PORTION HAVING A CENTRAL AXIAL CYLINDRICAL BORE, A PLURALITY OF CONNECTION BARS LONGITUDINALLLY DISPOSED WITHIN SAID AXIAL BORE, INSULATION SEPARATING SAID CONNECTION BARS FROM EACH OTHER AND FROM THE WALL OF SAID AXIAL BORE, SAID CONNECTION BARS AND SAID INSULATION DEFINING LONGITUDINAL PASSAGES ALONG SAID AXIAL BORE, AND A SEAL ON SAID ONE END OF SAID SHAFT PORTION CLOSING OFF THE BORE TO DEFINE A CHAMBER COMMON TO ALL OF SAID LONGITUDINAL PASSAGES, SUCH DYNAMOELECTRIC MACHINE CHARACTERIZED BY THE FOLLOWING IMPROVEMENT COMPRISING: A PLURALITY OF RADIAL PASSAGES DEFINED BY THE PART OF SAID SHAFT PORTION INSIDE SAID CASING, EACH OF SAID RADIAL PASSAGES PERMITTING COMMUNICATION BETWEEN THE INTERIOR OF SAID CASING AND ONE OF SAID LONGITUDINAL PASSAGES,
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |