Patent US3243618A successfully refreshed from Google Patents.
US3243618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled electrical machine
Assignee: Task Corp
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Filing: 1963-03-07
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Granted: 1966-03-29
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Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:06
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06; H02K5/00; H02K5/04; H02K5/12; H02K5/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN AN AIR COOLED ELECTRICAL MACHINE, COAXIAL ROTOR AND STATOR ASSEMBLIES EACH HAVING LAMINATIONS, EXPLOSION PROTECTIVE HOUSING STRUCTURE EXTENDING ABOUT STATOR AND ROTOR LAMINATIONS, SAID STRUCTURE INCLUDING A NON-ROTARY TUBULAR PORTION ADJACENT THE STATOR LAMINATIONS IN HEAT RECEIVING RELATION THEREWITH, THE ROTOR ASSEMBLY CONTAINING A COOLING AIR PASSAGE EXTENDING OPENLY AND AXIALLY THERETHROUGH, A SHROUD SPACED OUTWARDLY OF SAID EXPLOSION PROTECTIVE HOUSING STRUCTURE TO FORM THEREWITH ANOTHER COOLING AIR PASSAGE EXTENDING OPENLY AND AXIALLY THERE-
Claim 2
Dependent Claim
75 words
IN AN AIR COOLED ELECTRICAL MACHINE, COAXIAL ROTOR AND STATOR ASSEMBLIES EACH HAVING LAMINATIONS, EXPLOSION PROTECTIVE HOUSING STRUCTURE EXTENDING ABOUT STATOR AND ROTOR LAMINATIONS, SAID STRUCTURE INCLUDING A NON-ROTARY TUBULAR PORTION ADJACENT THE STATOR LAMINATIONS IN HEAT RECEIVING RELATION THEREWITH, THE ROTOR ASSEMBLY CONTAINING A COOLING AIR PASSAGE EXTENDING OPENLY AND AXIALLY THERETHROUGH, A SHROUD SPACED OUTWARDLY OF SAID EXPLOSION PROTECTIVE HOUSING STRUCTURE TO FORM THEREWITH ANOTHER COOLING AIR PASSAGE EXTENDING OPENLY AND AXIALLY THERE-
References Cited (Backward Citations)
US1919557A
Cited
US1858261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |