US3149478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid refrigerant cooling of hermetic motors
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1961-02-24
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Granted: 1964-09-22
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Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
- 👤 Axel F L Anderson
- 👤 Peter A Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:07
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/006; F25B31/008; H; H02; H02K; H02K9/00; H02K9/19; H02K9/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
IN AN ELECTRIC MACHINE HAVING A STATOR AND A ROTOR SEPARATED BY AN ANNULAR GAP, RING MEANS ON ONE END OF THE ROTOR, SAID RING MEANS BEING SPACED FROM THE END OF SAID ROTOR, SAID RING MEANS HAVING AN ANNULAR GROOVE, THE MOUTH OF THE GROOVE FACING RADIALLY INWARDLY FOR RECEIVING, RETAINING AND THROWING RADIALLY OUTWARDLY THE EXCESS PORTION OF LIQUID REFRIGERANT WHICH SPILLS THEREFROM INTO THE END OF SAID RING-ROTOR SPACE BY CENTRIFUGAL ACTION DURING MACHINE OPERATION, MEANS FOR DIRECTING LIQUID REFRIGERANT INTO SAID GROOVE IN FILLING RELATION, AND MEANS FOR EXHAUSTING REFRIGERANT FROM THE MACHINE.
References Cited (Backward Citations)
USRE24802E
Cited
US2031080A
Cited
US2096297A
Cited
US2780738A
Cited
FR1232820A
Cited
US3088042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |