Patent US3137958A successfully refreshed from Google Patents.
Patent US3159804A successfully refreshed from Google Patents.
US3159804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding transposition
Assignee: Allis Chalmers Corp
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Filing: 1961-04-25
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Granted: 1964-12-01
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Expires: 1981-04-25
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:51
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A CYLINDRICALLY WOUND ELECTRICAL WINDING FOR AN INDUCTION APPARATUS, SAID WINDING HAVING N NUMBER OF TURNS AND COMPRISING AN INSIDE LAYER AND AN OUTSIDE LAYER, EACH LAYER HAVING FIRST AND SECOND PAIRS OF CONDUCTORS, SAID WINDING HAVING 180* PAIR TRANSPOSITIONS AT N/2 TURNS AND ALSO IN SAID OUTSIDE LAYER.
Claim 2
Dependent Claim
49 words
A CYLINDRICALLY WOUND ELECTRICAL WINDING FOR AN INDUCTION APPARATUS, SAID WINDING HAVING N NUMBER OF TURNS AND COMPRISING AN INSIDE LAYER AND AN OUTSIDE LAYER, EACH LAYER HAVING FIRST AND SECOND PAIRS OF CONDUCTORS, SAID WINDING HAVING 180* PAIR TRANSPOSITIONS AT N/2 TURNS AND ALSO IN SAID OUTSIDE LAYER.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |