US3294991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induced vaporization cooling of rotary electrical machines
Assignee: TASK Corp A PA CORP
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Filing: 1963-01-07
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Granted: 1966-12-27
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Ward
- 👤 Richard N Rigney
- 👤 Richard R Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:44
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; H02K9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN AN ELECTRICAL MACHINE THAT INCLUDES ROTOR AND STATOR ASSEMBLIES HAVING A GAP THEREBETWEEN TO WHICH LIQUID HAS ACCESS, THE IMPROVEMENT THAT COMPRISES PUMP MEANS OPERATED DURING ROTOR ASSEMBLY ROTATION FOR EXERTING SUCTION TENDING TO REDUCE LIQUID PRESSURE IN THE GAP AND TO SUFFICIENT EXTENT THAT A VAPOR ZONE FORMS THEREIN DURING MACHINE OPERATION, AND SAID LIQUID CIRCULATING IN COOLING RELATION WITH AT LEAST ONE OF SAID ASSEMBLIES AND ALONG A PATH EXTERIORLY OF SAID GAP, THE PUMP MEANS DISCHARGE COMMUNICATING WITH SAID PATH.
Claim 2
Dependent Claim
84 words
IN AN ELECTRICAL MACHINE THAT INCLUDES ROTOR AND STATOR ASSEMBLIES HAVING A GAP THEREBETWEEN TO WHICH LIQUID HAS ACCESS, THE IMPROVEMENT THAT COMPRISES PUMP MEANS OPERATED DURING ROTOR ASSEMBLY ROTATION FOR EXERTING SUCTION TENDING TO REDUCE LIQUID PRESSURE IN THE GAP AND TO SUFFICIENT EXTENT THAT A VAPOR ZONE FORMS THEREIN DURING MACHINE OPERATION, AND SAID LIQUID CIRCULATING IN COOLING RELATION WITH AT LEAST ONE OF SAID ASSEMBLIES AND ALONG A PATH EXTERIORLY OF SAID GAP, THE PUMP MEANS DISCHARGE COMMUNICATING WITH SAID PATH.
References Cited (Backward Citations)
US3088042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |