Patent US3241331A successfully refreshed from Google Patents.
US3241331A
Expired / Lapsed
US
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Apparatus for and method of motor cooling
Assignee: Carrier Corp
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Filing: 1963-04-17
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Granted: 1966-03-22
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Expires: 1983-04-17
Abstract
No abstract record available.
Inventors
- 👤 James W Endress
- 👤 Carl M Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:52
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/006; F25B31/008; Y; Y10; Y10S; Y10S62/00; Y10S62/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE METHOD OF COOLING A MOTOR INCLUDING A DRIVE SHAFT, A ROTOR HAVING AT LEAST ONE PASSAGE FORMED THEREIN, END RINGS SECURED TO OPPOSITE ENDS OF SAID ROTOR, A STATOR HAVING AT LEAST ONE PASSAGE AND A HOUSING SURROUNDING SAID DRIVE SHAFT, ROTOR AND STATOR; WHICH COMPRISES THE STEPS OF DELIVERING A COOLING MEDIUM WITHIN THE HOUSING ADJACENT THE ROTATABLY DRIVEN DRIVE SHAFT, COLLECTING COOLING MEDIUM FLOWING RADIALLY OUTWARDLY UNDER THE INFLUENCE OF CENTRIFUGAL FORCES DEVELOPED BY THE DRIVE SHAFT, CONFINING THE COLLECTED COOLING MEDIUM IN A SPACE HAVING COMMUNICATION WITH THE ROTOR PASSAGE SO AS TO PROVIDE A LIQUID HEAD FOR THE FLOW OF COLLECTED COOLING MEDIUM THROUGH THE PASSAGE.
Claim 2
Independent Claim
111 words
THE METHOD OF COOLING A MOTOR INCLUDING A DRIVE SHAFT, A ROTOR HAVING AT LEAST ONE PASSAGE FORMED THEREIN, END RINGS SECURED TO OPPOSITE ENDS OF SAID ROTOR, A STATOR HAVING AT LEAST ONE PASSAGE AND A HOUSING SURROUNDING SAID DRIVE SHAFT, ROTOR AND STATOR; WHICH COMPRISES THE STEPS OF DELIVERING A COOLING MEDIUM WITHIN THE HOUSING ADJACENT THE ROTATABLY DRIVEN DRIVE SHAFT, COLLECTING COOLING MEDIUM FLOWING RADIALLY OUTWARDLY UNDER THE INFLUENCE OF CENTRIFUGAL FORCES DEVELOPED BY THE DRIVE SHAFT, CONFINING THE COLLECTED COOLING MEDIUM IN A SPACE HAVING COMMUNICATION WITH THE ROTOR PASSAGE SO AS TO PROVIDE A LIQUID HEAD FOR THE FLOW OF COLLECTED COOLING MEDIUM THROUGH THE PASSAGE.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |