Patent US3401280A successfully refreshed from Google Patents.
US3401280A
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US
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Fabricated squirrel cage rotor construction for electric motor and method of assembling the same
Assignee: General Electric Co
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Filing: 1966-03-01
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Granted: 1968-09-10
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Expires: 1986-03-01
Abstract
No abstract record available.
Inventors
- 👤 Dale F Lackey
- 👤 Gilbert D Spooner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:01
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; H02K17/18; H02K17/20; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T428/00; Y10T428/12; Y10T428/12188; Y10T428/12201; Y10T428/12215; Y10T428/12229; Y10T428/12264; Y10T428/12361; Y10T428/12375; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
A ROTOR FOR AN ELECTRIC INDUCTION MOTOR COMPRISING: A LAMINATED STACK OF ANNULAR FERROMAGNETIC PUNCHINGS PROVIDING A CORE HAVING AXIALLY EXTENDING SLOTS CIRCUMFERENTIALLY SPACED IN THE PERIPHERY THEREOF AND RESPECTIVE CONDUCTORS IN SAID SLOTS EACH HAVING A WEDGE-SHAPED TOP PORTION WITH ANGLED SURFACES ABUTTING CORRESPONDING
References Cited (Backward Citations)
US1647633A
Cited
US2060859A
Cited
US2121655A
Cited
US2504825A
Cited
US2873515A
Cited
US2944171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |