US3087108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux switching transformer
Assignee: Individual
•
Filing: 1957-01-03
•
Granted: 1963-04-23
•
Expires: 1977-01-03
Abstract
No abstract record available.
Inventors
- 👤 Dominic S Toffolo
- 👤 Lee R Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:57
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/14; H01F29/146; H01F29/143
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
AN ELECTRICAL POWER CONTROL DEVICE COMPRISING, FIRST AND SECOND MAGNETIC CORE MEMBERS OF GRAIN ORIENTED CHARACTERISTICS, A PRIMARY WINDING DISPOSED UPON SAID CORE MEMBERS HAVING LINKAGE TO SAID MEMBERS, A SECONDARY WINDING DISPOSED ON THE FIRST CORE MEMBER, FIRST CONTROL MEANS FOR PRODUCING A TRANSVERSE FLUX ACROSS A PORTION OF THE FIRST MAGNETIC CORE MEMBER FOR CONTROLLING THE PERMEABILITY THEREOF, SECOND CONTROL MEANS FOR PRODUCING A TRANSVERSE FLUX ACROSS A PORTION OF THE SECOND MAGNETIC CORE MEMBER FOR CONTROLLING THE PERMEABILITY THEREOF, MEANS FOR VARYING THE FLUX PRODUCED BY SAID FIRST CONTROL MEANS AND SAID SECOND CONTROL MEANS IN AN INVERSE SENSE FOR VARYING THE RELATIVE PERMEABILITIES OF THE FIRST AND SECOND MAGNETIC CORE MEMBERS, AND A SHORTED WINDING LINKING THE SECOND MAGNETIC CORE MEMBER FOR OPPOSING FLUX CHANGES IN THE SECOND MAGNETIC CORE MEMBER.
References Cited (Backward Citations)
US1815516A
Cited
US1910381A
Cited
US1891044A
Cited
US1995530A
Cited
DE702814C
Cited
US2466028A
Cited
US2644109A
Cited
US2703391A
Cited
US2814786A
Cited
US2844804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |