Patent US3340412A successfully refreshed from Google Patents.
US3340412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for the direct liquid cooling of a turbogenerator provided with end turnretaining rings
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1965-08-23
•
Granted: 1967-09-05
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Wiedemann Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:57
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A LIQUID COOLED ROTOR CONSTRUCTION FOR A TURBOGENERATOR WHICH COMPRISES A ROTOR BODY, SAID ROTOR BODY HAVING A WINDING THEREON OF HOLLOW CONDUCTORS INCLUDING END TURNS AT OPPOSITE ENDS OF SAID ROTOR BODY AND WHEREIN A LIQUID COOLANT FLOWS THROUGH TURNS OF THE WINDING CONNECTED HYDRAULICALLY IN SERIES, AN END TURN RETAINING RING AT EACH END OF SAID ROTOR BODY, EACH SAID RETAINING RING INCLUDING A CYLINDRICAL PART SECURED UPON SAID ROTOR BODY AND AN ANNULAR END PLATE THE INNER PERIPHERY OF WHICH IS RADIALLY SPACED FROM SAID ROTOR BODY, DISTRIBUTION CHAMBERS FOR THE SUPPLY AND DISCHARGE OF THE LIQUID COOLANT MOUNTED ON THE END PLATE OF AT LEAST ONE OF SAID RETAINING RINGS, RIGID PIPE CONNECTIONS BETWEEN SAID DISTRIBUTION CHAMBERS AND SAID HOLLOW END TURNS OF SAID ROTOR WINDING, AND FLEXIBLE PIPE CONNECTIONS BETWEEN SAID DISTRIBUTION CHAMBERS AND AXIALLY EXTENDING BORES WITHIN THE BODY OF SAID ROTOR.
Claim 2
Dependent Claim
148 words
A LIQUID COOLED ROTOR CONSTRUCTION FOR A TURBOGENERATOR WHICH COMPRISES A ROTOR BODY, SAID ROTOR BODY HAVING A WINDING THEREON OF HOLLOW CONDUCTORS INCLUDING END TURNS AT OPPOSITE ENDS OF SAID ROTOR BODY AND WHEREIN A LIQUID COOLANT FLOWS THROUGH TURNS OF THE WINDING CONNECTED HYDRAULICALLY IN SERIES, AN END TURN RETAINING RING AT EACH END OF SAID ROTOR BODY, EACH SAID RETAINING RING INCLUDING A CYLINDRICAL PART SECURED UPON SAID ROTOR BODY AND AN ANNULAR END PLATE THE INNER PERIPHERY OF WHICH IS RADIALLY SPACED FROM SAID ROTOR BODY, DISTRIBUTION CHAMBERS FOR THE SUPPLY AND DISCHARGE OF THE LIQUID COOLANT MOUNTED ON THE END PLATE OF AT LEAST ONE OF SAID RETAINING RINGS, RIGID PIPE CONNECTIONS BETWEEN SAID DISTRIBUTION CHAMBERS AND SAID HOLLOW END TURNS OF SAID ROTOR WINDING, AND FLEXIBLE PIPE CONNECTIONS BETWEEN SAID DISTRIBUTION CHAMBERS AND AXIALLY EXTENDING BORES WITHIN THE BODY OF SAID ROTOR.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |