Patent US3225231A successfully refreshed from Google Patents.
US3225231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-cooled end winding for dynamoelectric machine rotor
Assignee: General Electric Co
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Filing: 1963-09-19
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Granted: 1965-12-21
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Expires: 1983-09-19
Abstract
No abstract record available.
Inventors
- 👤 Henry W Kudlacik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:44
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/24; H02K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A GAS-COOLED DYNAMOELECTRIC MACHINE ROTOR HAVING A WINDING WITH CIRCUMSCRIBED COILS AND END TURNS EXTENDING BEYOND THE ROTOR BODY, THE COMBINATION OF: A RETAINING RING HOLDING THE COILS IN PLACE, A CENTERING RING BLOCKING OFF AN ANNULAR CHAMBER BENEATH THE RETAINING RING, MEANS SUPPLYING A FLOW OF GAS COOLING THE CONDUCTORS, SAID GAS BEING DISCHARGED AT A FIRST BLOCKED-OFF ZONE IN SAID CHAMBER, AND MEANS DEFINING A CIRCUMFERENTIALLY EXTENDING DUCT HAVING AN INLET COMMUNICATING WITH SAID FIRST ZONE AND HAVING A PLURALITY OF OUTLETS DISPOSED ON THE OUTSIDE OF THE CENTERING RING AND SPREAD OVER A SUBSTANTIALLY GREATER PORTION OF THE ROTOR CIRCUMFERENCE THAN IS COVERED BY SAID FIRST ZONE.
Claim 2
Dependent Claim
111 words
IN A GAS-COOLED DYNAMOELECTRIC MACHINE ROTOR HAVING A WINDING WITH CIRCUMSCRIBED COILS AND END TURNS EXTENDING BEYOND THE ROTOR BODY, THE COMBINATION OF: A RETAINING RING HOLDING THE COILS IN PLACE, A CENTERING RING BLOCKING OFF AN ANNULAR CHAMBER BENEATH THE RETAINING RING, MEANS SUPPLYING A FLOW OF GAS COOLING THE CONDUCTORS, SAID GAS BEING DISCHARGED AT A FIRST BLOCKED-OFF ZONE IN SAID CHAMBER, AND MEANS DEFINING A CIRCUMFERENTIALLY EXTENDING DUCT HAVING AN INLET COMMUNICATING WITH SAID FIRST ZONE AND HAVING A PLURALITY OF OUTLETS DISPOSED ON THE OUTSIDE OF THE CENTERING RING AND SPREAD OVER A SUBSTANTIALLY GREATER PORTION OF THE ROTOR CIRCUMFERENCE THAN IS COVERED BY SAID FIRST ZONE.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |