US3092744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor winding
Assignee: Alcoa Corp
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Filing: 1960-02-23
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Granted: 1963-06-04
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Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 Edward E Stonebrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:31
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02; H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; H02K17/168; H02K3/00; H02K3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A MOTOR ROTOR COMPRISING A CORE AND A CAST ALUMINUM BASE ALLOY WINDING CONSISTING OF 14 TO 20% SILICON, 0.5 TO 4% COPPER, 0.05 TO 0.3% TITANIUM AND THE BALANCE ALUMINUM AND IMPURITIES, SAID CAST ROTOR WINDING BEING CHARACTERIZED BY A LOW ELECTRICAL CONDUCTIVITY OF LESS THAN ABOUT 25% OF I.A.C.S. ON A VOLUME BASIS AND BY SUBSTANTIAL FREEDOM FROM HOT CRACKS.
Claim 2
Dependent Claim
62 words
A MOTOR ROTOR COMPRISING A CORE AND A CAST ALUMINUM BASE ALLOY WINDING CONSISTING OF 14 TO 20% SILICON, 0.5 TO 4% COPPER, 0.05 TO 0.3% TITANIUM AND THE BALANCE ALUMINUM AND IMPURITIES, SAID CAST ROTOR WINDING BEING CHARACTERIZED BY A LOW ELECTRICAL CONDUCTIVITY OF LESS THAN ABOUT 25% OF I.A.C.S. ON A VOLUME BASIS AND BY SUBSTANTIAL FREEDOM FROM HOT CRACKS.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |