Patent US4314221A successfully refreshed from Google Patents.
US4314221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductance device
Assignee: TDK Corp
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Filing: 1980-09-17
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Granted: 1982-02-02
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Expires: 2000-09-17
Abstract
Abstract An inductance device comprises a drum core on which a coil is wound and which has a projection; a rectangular pot core having each concave part on the upper surface and the lower surface and having a hollow for fitting said drum core and a hole for fitting said projection of said drum core; electrode parts which are respectively formed on each side surface and said concave part of the upper surface of said pot core and on the bottom surface of said pot core; said drum core having said coil being fitted into said hollow of said pot core; and said coil being connected to said electrode parts at said concave part by each of lead terminals of said coil; and said drum core being sealed in said hollow.
Inventors
- 👤 Hiroshi Satou
- 👤 Tadao Yahagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04; H01F17/043; H01F27/00; H01F27/28; H01F27/29
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
An inductance device which comprises a drum core on which a coil is wound and which has a projection; a rectangular pot core having each concave part on the upper surface and the lower surface and having a hollow for fitting said drum core and a hole for fitting said projection of said drum core; electrode parts which are respectively formed on each side surface and said concave part of the upper surface of said pot core and on the bottom surface of said pot core; said drum core having said coil being fitted into said hollow of said pot core; and said coil being connected to said electrode parts at said concave part by each of lead terminals of said coil; and said drum core being sealed in said hollow.
Claim 2
Dependent Claim
131 words
An inductance device which comprises a drum core on which a coil is wound and which has a projection; a rectangular pot core having each concave part on the upper surface and the lower surface and having a hollow for fitting said drum core and a hole for fitting said projection of said drum core; electrode parts which are respectively formed on each side surface and said concave part of the upper surface of said pot core and on the bottom surface of said pot core; said drum core having said coil being fitted into said hollow of said pot core; and said coil being connected to said electrode parts at said concave part by each of lead terminals of said coil; and said drum core being sealed in said hollow.
Claim 3
Dependent Claim
24 words
The inductance device according to claim 1 wherein said drum core has flanges at both ends and said coil is wound between said flanges.
Claim 4
Dependent Claim
30 words
The inductance device according to claim 1 wherein said electrode parts are formed on the concave part of the upper surface of said pot core in symmetric positions without connection.
Claim 5
Dependent Claim
22 words
The inductance device according to claim 1 wherein each groove is formed on each side surface on which said electrode is formed.
References Cited (Backward Citations)
US2220126A
Cited
US3507039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |