US3250926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated motor
Assignee: Emerson Electric Co
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Filing: 1963-04-11
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Granted: 1966-05-10
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Paul B O'reilly
- 👤 Donald H Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:27
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN A DYNAMOELECTRIC MACHINE: A HOUSING; A STATOR MOUNTED BY THE HOUSING; WINDINGS CARRIED BY THE STATOR AND HAVING OPPOSITE ENDS PROJECTING BEYOND THE STATOR; A ROTOR STRUCTURE IN THE STATOR, SAID ROTOR STRUCTURE INCLUDING A SHAFT, SAID ROTOR STRUCTURE HAVING FAN ELEMENTS AT OPPOSITE ENDS; MEANS FORMING A FIRST AIR PASSAGE IN THE HOUSING HAVING AN INTAKE OPENING ADJACENT ONE END THEREOF AND COMMUNICATING WITH THE FAN ELEMENT AND WINDING ENDS AT THE OTHER END OF THE HOUSING, SAID FIRST AIR PASSAGE HAVING AN EXHAUST ADJACENT SAID OTHER END OF THE HOUSING; AND MEANS FORMING A SECOND AIR PASSAGE IN THE HOUSING HAVING AN INTAKE OPENING ADJACENT SAID ONE END AND COMMUNICATING WITH THE FAN ELEMENT AND WINDING ENDS AT SAID ONE END OF THE HOUSING, SAID SECOND AIR PASSAGE HAVING AN EXHAUST ADJACENT THE SAID OTHER END OF THE HOUSING; SAID FAN ELEMENTS BEING ARRANGED RESPECTIVELY TO INDUCE FLOW OF AIR INTO SAID INTAKE OPENINGS AND OUT OF SAID EXHAUSTS WHEREBY BOTH INTAKE OPENINGS ARE LOCATED REMOTE FROM BOTH EXHAUSTS THUS TO MINIMIZE RECIRCULATION OF EXHAUSTED AIR.
Claim 2
Dependent Claim
179 words
IN A DYNAMOELECTRIC MACHINE: A HOUSING; A STATOR MOUNTED BY THE HOUSING; WINDINGS CARRIED BY THE STATOR AND HAVING OPPOSITE ENDS PROJECTING BEYOND THE STATOR; A ROTOR STRUCTURE IN THE STATOR, SAID ROTOR STRUCTURE INCLUDING A SHAFT, SAID ROTOR STRUCTURE HAVING FAN ELEMENTS AT OPPOSITE ENDS; MEANS FORMING A FIRST AIR PASSAGE IN THE HOUSING HAVING AN INTAKE OPENING ADJACENT ONE END THEREOF AND COMMUNICATING WITH THE FAN ELEMENT AND WINDING ENDS AT THE OTHER END OF THE HOUSING, SAID FIRST AIR PASSAGE HAVING AN EXHAUST ADJACENT SAID OTHER END OF THE HOUSING; AND MEANS FORMING A SECOND AIR PASSAGE IN THE HOUSING HAVING AN INTAKE OPENING ADJACENT SAID ONE END AND COMMUNICATING WITH THE FAN ELEMENT AND WINDING ENDS AT SAID ONE END OF THE HOUSING, SAID SECOND AIR PASSAGE HAVING AN EXHAUST ADJACENT THE SAID OTHER END OF THE HOUSING; SAID FAN ELEMENTS BEING ARRANGED RESPECTIVELY TO INDUCE FLOW OF AIR INTO SAID INTAKE OPENINGS AND OUT OF SAID EXHAUSTS WHEREBY BOTH INTAKE OPENINGS ARE LOCATED REMOTE FROM BOTH EXHAUSTS THUS TO MINIMIZE RECIRCULATION OF EXHAUSTED AIR.
References Cited (Backward Citations)
US2357923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |