US3207934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor with improved cooling means
Assignee: Louis Allis Co
•
Filing: 1962-04-18
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Granted: 1965-09-21
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Expires: 1982-04-18
Abstract
No abstract record available.
Inventors
- 👤 Russell I Robinson
- 👤 Bruce T Hein
- 👤 Joseph W Purman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:24
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; H02K9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN ELECTRIC MOTOR HAVING: A HOUSING; A ROTOR INCLUDING A SHAFT MOUNTED WITHIN HOUSING; A STATOR SURROUNDING THE ROTOR AND HAVING END COILS; A PAIR OF RINGS MOUNTING SAID STATOR IN SAID HOUSING HAVING HEAT EXCHANGER MEANS MOUNTED THEREON, SAID STATOR, HOUSING, AND RINGS DEFINING AN ENCLOSED FLUIDTIGHT ANNULAR CHAMBER; AN INLET AND AN OUTLET FOR CONDUCTING COOLING FLUID INTO AND OUT OF SAID CHAMBER, THEREBY TO COOL SAID STATOR AND SAID RINGS; SAID END COILS EXTENDING FROM THE STATOR AND LOCATED ON THE OUTSIDE OF SAID CHAMBER BUT WITHIN SAID HOUSING, MEANS WITHINS SAID HOUSING FOR PRODUCING CIRCULATING AIR CURRENTS OVER AND TO COOL SAID END COILS AND ALSO OVER SAID COOLED RINGS WHEREBY THE LATTER ACTS TO COOL SAID AIR.
Claim 2
Dependent Claim
122 words
AN ELECTRIC MOTOR HAVING: A HOUSING; A ROTOR INCLUDING A SHAFT MOUNTED WITHIN HOUSING; A STATOR SURROUNDING THE ROTOR AND HAVING END COILS; A PAIR OF RINGS MOUNTING SAID STATOR IN SAID HOUSING HAVING HEAT EXCHANGER MEANS MOUNTED THEREON, SAID STATOR, HOUSING, AND RINGS DEFINING AN ENCLOSED FLUIDTIGHT ANNULAR CHAMBER; AN INLET AND AN OUTLET FOR CONDUCTING COOLING FLUID INTO AND OUT OF SAID CHAMBER, THEREBY TO COOL SAID STATOR AND SAID RINGS; SAID END COILS EXTENDING FROM THE STATOR AND LOCATED ON THE OUTSIDE OF SAID CHAMBER BUT WITHIN SAID HOUSING, MEANS WITHINS SAID HOUSING FOR PRODUCING CIRCULATING AIR CURRENTS OVER AND TO COOL SAID END COILS AND ALSO OVER SAID COOLED RINGS WHEREBY THE LATTER ACTS TO COOL SAID AIR.
References Cited (Backward Citations)
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Cited
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Cited
GB162552A
Cited
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Cited
US2536815A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |