Patent US3189769A successfully refreshed from Google Patents.
US3189769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine rotor cooling
Assignee: General Electric Co
•
Filing: 1961-08-01
•
Granted: 1965-06-15
•
Expires: 1981-08-01
Abstract
No abstract record available.
Inventors
- 👤 David M Willyoung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:07
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/24; H02K9/00; H02K9/22; H02K9/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A DYNAMOELECTRIC MACHINE, THE COMBINATION OF A ROTOR DEFINING A ROTATING SUBSTANTIALLY GAS-TIGHT CHAMBER, AN OPERATIVELY CONNECTED ELECTRICAL WINDING DISPOSED IN SAID CHAMBER AND HAVING PORTIONS LOCATED IN THE RADIALLY OUTERMOST PARTS THEREOF, SAID CHAMBER ALSO CONTAINING A DIELECTRIC VAPORIZABLE FLUID PARTIALLY IN A LIQUID STATE, ROTATING HEAT EXCHANGER MEANS DISPOSED IN SAID CHAMBER AND HAVING PORTIONS LOCATED IN A RADIALLY INNER PART THEREOF, AND MEANS CIRCULATING A SECONDARY COOLANT FLUID THROUGH SAID HEAT EXCHANGER MEANS AT A TEMPERATURE LOWER THANT HE PREVAILING SATURATION TEMPERATURE OF SAID DIELECTRIC FLUID, WHEREBY THE DIELECTRIC FLUID ACTS AS A THERMAL COUPLING BETWEEN THE WINDING AND THE HEAT EXCHANGER TO TRANSFER HEAT EVOLVED DUE TO OHMIC LOSSES IN THE WINDING BY BOILING ON THE WINDING AND CONDENSING ON THE HEAT EXCHANGER MEANS.
Claim 2
Dependent Claim
129 words
IN A DYNAMOELECTRIC MACHINE, THE COMBINATION OF A ROTOR DEFINING A ROTATING SUBSTANTIALLY GAS-TIGHT CHAMBER, AN OPERATIVELY CONNECTED ELECTRICAL WINDING DISPOSED IN SAID CHAMBER AND HAVING PORTIONS LOCATED IN THE RADIALLY OUTERMOST PARTS THEREOF, SAID CHAMBER ALSO CONTAINING A DIELECTRIC VAPORIZABLE FLUID PARTIALLY IN A LIQUID STATE, ROTATING HEAT EXCHANGER MEANS DISPOSED IN SAID CHAMBER AND HAVING PORTIONS LOCATED IN A RADIALLY INNER PART THEREOF, AND MEANS CIRCULATING A SECONDARY COOLANT FLUID THROUGH SAID HEAT EXCHANGER MEANS AT A TEMPERATURE LOWER THANT HE PREVAILING SATURATION TEMPERATURE OF SAID DIELECTRIC FLUID, WHEREBY THE DIELECTRIC FLUID ACTS AS A THERMAL COUPLING BETWEEN THE WINDING AND THE HEAT EXCHANGER TO TRANSFER HEAT EVOLVED DUE TO OHMIC LOSSES IN THE WINDING BY BOILING ON THE WINDING AND CONDENSING ON THE HEAT EXCHANGER MEANS.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |