US3246267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer winding with high zero sequence impedance
Assignee: ALLIS CHAHNERS Manufacturing Co
•
Filing: 1963-07-29
•
Granted: 1966-04-12
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Frank J Wesolowski
- 👤 Melvin N Ackerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:42
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A WINDING ARRANGEMENT FOR A POLYPHASE TRANSFORMER, COMPRISING, FOR EACH PHASE, A FIRST AND A SECOND Y CONNECTED WINDING CONNECTED IN PARALLEL TO FORM THE SECONDARY OF THE TRANSFORMER, SAID FIRST Y HAVING ITS NEUTRAL GROUNDED AND SAID SECOND Y HAVING ITS NEUTRAL ISOLATED, AND A DELTAL WINDING MEANS MAGNETICALLY COUPLED TO SAID FIRST AND SECOND Y WINDINGS.
Claim 2
Dependent Claim
58 words
A WINDING ARRANGEMENT FOR A POLYPHASE TRANSFORMER, COMPRISING, FOR EACH PHASE, A FIRST AND A SECOND Y CONNECTED WINDING CONNECTED IN PARALLEL TO FORM THE SECONDARY OF THE TRANSFORMER, SAID FIRST Y HAVING ITS NEUTRAL GROUNDED AND SAID SECOND Y HAVING ITS NEUTRAL ISOLATED, AND A DELTAL WINDING MEANS MAGNETICALLY COUPLED TO SAID FIRST AND SECOND Y WINDINGS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |