US3315196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pot type magnetic core for toroidal coil
Assignee: Fujitsu Ltd
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Filing: 1964-06-16
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Granted: 1967-04-18
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Expires: 1984-06-16
Abstract
No abstract record available.
Inventors
- 👤 Kawahara Kouji
- 👤 Takahashi Misao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:25
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04; H01F17/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A MAGNETIC CORE FOR A SUBSTANTIALLY TOROIDAL COIL, COMPRISING A SUBSTANTIALLY RECTANGULAR PARALLELOPIPED HAVING SPACED SUBSTANTIALLY PARALLEL TOP AND BOTTOM FACES, A FIRST PAIR OF SPACED SUBSTANTIALLY PARALLEL SIDES SUBSTANTIALLY PERPENDICULAR TO SAID TOP AND BOTTOM FACES AND A SECOND PAIR OF SPACED SUBSTANTIALLY PARALLEL SIDES SUBSTANTIALLY PERPENDICULAR TO SAID TOP AND BOTTOM FACES AND TO SAID FIRST PAIR OF SIDES, EACH OF SAID TOP AND BOTTOM FACES HAVING FOUR EDGES OF SUBSTANTIALLY EQUAL LENGTH W MM., EACH OF THE SIDES OF SAID FIRST PAID OF SIDES AND EACH OF THE SIDES OF SAID SECOND PAIR OF SIDES HAVING TOP AND BOTTOM EDGES OF SUBSTANTIALLY EQUAL LENGTH W MM. AND SIDE EDGES OF SUBSTANTIALLY EQUAL LENGTH H1 MM., SAID MAGNETIC CORE HAVING FORMED THEREIN A SUBSTANTIALLY TOROIDAL RECESS FOR A SUBSTANTIALLY TOROIDAL COIL, SAID TOROIDAL RECESS HAVING SUBSTANTIALLY PARALLEL TOP AND BOTTOM FACES SUBSTANTIALLY PARALLEL TO THE TOP AND BOTTOM FACES OF SAID RECTANGULAR PARALLELOPIPED AND SPACED A DISTANCE H2 MM. FROM EACH OTHER, A FIRST SUBSTANTIALLY CYLINDRICAL SIDE SUBSTANTIALLY PERPENDICULAR TO THE TOP AND BOTTOM FACES OF SAID TOROIDAL RECESS AND OF SAID RECTANGULAR PARALLELOPIPED AND HAVING A DIAMETER D2 MM. AND A SECOND SUBSTANTIALLY CYLINDRICAL SIDE COAXIAL WITH AND SPACED FROM THE FIRST SIDE OF SAID TOROIDAL RECESS AND SUB-
Claim 2
Dependent Claim
212 words
A MAGNETIC CORE FOR A SUBSTANTIALLY TOROIDAL COIL, COMPRISING A SUBSTANTIALLY RECTANGULAR PARALLELOPIPED HAVING SPACED SUBSTANTIALLY PARALLEL TOP AND BOTTOM FACES, A FIRST PAIR OF SPACED SUBSTANTIALLY PARALLEL SIDES SUBSTANTIALLY PERPENDICULAR TO SAID TOP AND BOTTOM FACES AND A SECOND PAIR OF SPACED SUBSTANTIALLY PARALLEL SIDES SUBSTANTIALLY PERPENDICULAR TO SAID TOP AND BOTTOM FACES AND TO SAID FIRST PAIR OF SIDES, EACH OF SAID TOP AND BOTTOM FACES HAVING FOUR EDGES OF SUBSTANTIALLY EQUAL LENGTH W MM., EACH OF THE SIDES OF SAID FIRST PAID OF SIDES AND EACH OF THE SIDES OF SAID SECOND PAIR OF SIDES HAVING TOP AND BOTTOM EDGES OF SUBSTANTIALLY EQUAL LENGTH W MM. AND SIDE EDGES OF SUBSTANTIALLY EQUAL LENGTH H1 MM., SAID MAGNETIC CORE HAVING FORMED THEREIN A SUBSTANTIALLY TOROIDAL RECESS FOR A SUBSTANTIALLY TOROIDAL COIL, SAID TOROIDAL RECESS HAVING SUBSTANTIALLY PARALLEL TOP AND BOTTOM FACES SUBSTANTIALLY PARALLEL TO THE TOP AND BOTTOM FACES OF SAID RECTANGULAR PARALLELOPIPED AND SPACED A DISTANCE H2 MM. FROM EACH OTHER, A FIRST SUBSTANTIALLY CYLINDRICAL SIDE SUBSTANTIALLY PERPENDICULAR TO THE TOP AND BOTTOM FACES OF SAID TOROIDAL RECESS AND OF SAID RECTANGULAR PARALLELOPIPED AND HAVING A DIAMETER D2 MM. AND A SECOND SUBSTANTIALLY CYLINDRICAL SIDE COAXIAL WITH AND SPACED FROM THE FIRST SIDE OF SAID TOROIDAL RECESS AND SUB-
References Cited (Backward Citations)
US3068436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |