US3221246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal producing device and combination thereof with master controller
Assignee: Schneider Electric USA Inc
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Filing: 1961-07-27
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Granted: 1965-11-30
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Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Calvin B Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AN APPARATUS COMPRISING SEPARATE FIRST AND SECOND TRANSFORMERS, CORES FOR SAID TRANSFORMERS, RESPECTIVELY, EACH CORE HAVING A FIRST LEG PORTION, A SECOND LEG PORTION, AND A BOTTOM YOKE PORTION AND A TOP YOKE PORTION JOINING SAID LEG PORTIONS, PRIMARY AND SECONDARY WINDINGS ON EACH OF SAID CORES, EACH OF SAID SECOND LEG PORTIONS HAVING AN AIR GAP EXTENDING TRANSVERSELY THEREOF, SAID GAPS BEING COPLANAR, A SINGLE FLUX CONDUCTING VANE MEMBER ROTATABLE ABOUT AN AXIS NORMAL TO THE PLANE OF SAID GAPS AND COMMON TO SAID GAPS AND INSERTABLE INTO SAID RECTRACTABLE FROM SAID GAPS SUCCESSIVELY, ALTERNATELY, UPON ROTATION OF SAID VANE MEMBER TO DIFFERENT POSITIONS ABOUT SAID AXIS.
Claim 2
Independent Claim
108 words
AN APPARATUS COMPRISING SEPARATE FIRST AND SECOND TRANSFORMERS, CORES FOR SAID TRANSFORMERS, RESPECTIVELY, EACH CORE HAVING A FIRST LEG PORTION, A SECOND LEG PORTION, AND A BOTTOM YOKE PORTION AND A TOP YOKE PORTION JOINING SAID LEG PORTIONS, PRIMARY AND SECONDARY WINDINGS ON EACH OF SAID CORES, EACH OF SAID SECOND LEG PORTIONS HAVING AN AIR GAP EXTENDING TRANSVERSELY THEREOF, SAID GAPS BEING COPLANAR, A SINGLE FLUX CONDUCTING VANE MEMBER ROTATABLE ABOUT AN AXIS NORMAL TO THE PLANE OF SAID GAPS AND COMMON TO SAID GAPS AND INSERTABLE INTO SAID RECTRACTABLE FROM SAID GAPS SUCCESSIVELY, ALTERNATELY, UPON ROTATION OF SAID VANE MEMBER TO DIFFERENT POSITIONS ABOUT SAID AXIS.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |