US5386206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered transformer coil having conductors projecting into through holes
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1992-10-02
•
Granted: 1995-01-31
•
Expires: 2012-10-02
Abstract
Abstract A layered coil, having high connection reliability, formed by alternately stacking a plurality of coil conductors and insulators. Outlet portions of the of coil conductors are connected with each other without using through holes. The coil conductors are formed on surfaces of insulating sheets so that the outlet portions of the coil conductors project from edges of the insulating sheets. The insulating sheets are stacked so that the outlet portions of the coil conductors can be connected, by spot welding or the like, with each other or with terminals in portions projecting from surfaces of the layered product.
Inventors
- 👤 Hidetoshi Iwatani
- 👤 Masakazu Kazama
- 👤 Masato Fujino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:31
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/041; H01F41/046; H01B; H01B13/00; H01F17/00; H01F17/0006; H01F17/0013
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
121 words
A layered coil comprising a layered product formed by a plurality of coil conductors which are alternately arranged with a plurality of insulators, ends of said coil conductors having outlet portions, at least parts of said outlet portions projecting from surfaces of said layered product, a first outlet portion of a first coil conductor being connected with a first outlet portion of a second coil conductor, said first outlet portion of said first coil conductor being adjacent to said first outlet portion of said second coil conductor; a terminal, one of said outlet portions of one of said plurality of coil conductors being connected with said terminal, and a case for retaining said layered product, said terminal extending from said case.
Claim 2
Dependent Claim
121 words
A layered coil comprising a layered product formed by a plurality of coil conductors which are alternately arranged with a plurality of insulators, ends of said coil conductors having outlet portions, at least parts of said outlet portions projecting from surfaces of said layered product, a first outlet portion of a first coil conductor being connected with a first outlet portion of a second coil conductor, said first outlet portion of said first coil conductor being adjacent to said first outlet portion of said second coil conductor; a terminal, one of said outlet portions of one of said plurality of coil conductors being connected with said terminal, and a case for retaining said layered product, said terminal extending from said case.
Claim 3
Dependent Claim
31 words
A layered coil in accordance with claim 1, wherein said outlet portion which is connected with said terminal projects from an outer peripheral portion of one of said plurality of insulators.
Claim 4
Dependent Claim
33 words
A layered coil in accordance with claim 1, wherein said insulators have through holes, said first outlet portions of said respective coil conductors at least partially covering open ends of said through holes.
Claim 5
Dependent Claim
39 words
A layered coil in accordance with claim 3, wherein said first outlet portions are positioned so as to overlap with each other thereby forming the respective pairs of first outlet portions which are to be connected with each other.
Claim 6
Dependent Claim
25 words
A layered coil in accordance with claim 3, further comprising a core of ferrite, a part of said core being positioned in said through holes.
Claim 7
Dependent Claim
29 words
A layered coil in accordance with claim 3, wherein said coil conductors are arranged so as to spirally extend around peripheries of said through holes of said respective insulators.
Claim 8
Dependent Claim
55 words
A layered coil in accordance with claim 1, wherein said first coil conductor is arranged so as to extend along a first direction on a surface of a first insulator and said second coil conductor is arranged to extend along a second direction, opposite to said first direction, on a surface of a second insulator.
Claim 9
Dependent Claim
31 words
A layered coil in accordance with claim 1, wherein said first outlet portion of said first coil conductor is spot welded with said first outlet portion of said second coil conductor.
Claim 10
Dependent Claim
110 words
A layered coil comprising a layered product formed by a plurality of coil conductors which are alternately arranged with a plurality of insulators, ends of said coil conductors having outlet portions, at least parts of said outlet portions projecting from surfaces of said layered product, a first outlet portion of a first coil conductor being connected with a first outlet portion of a second coil conductor, said first outlet portion of said first coil conductor being adjacent to said first outlet portion of said second coil conductor, and said insulators having through holes, said first outlet portions of said respective coil conductors projecting from peripheral portions of said through holes.
Claim 11
Dependent Claim
110 words
A layered coil comprising a layered product formed by a plurality of coil conductors which are alternately arranged with a plurality of insulators, ends of said coil conductors having outlet portions, at least parts of said outlet portions projecting from surfaces of said layered product, a first outlet portion of a first coil conductor being connected with a first outlet portion of a second coil conductor, said first outlet portion of said first coil conductor being adjacent to said first outlet portion of said second coil conductor, and said insulators having through holes, said first outlet portions of said respective coil conductors projecting from peripheral portions of said through holes.
Claim 12
Dependent Claim
39 words
A layered coil in accordance with claim 9, wherein said first outlet portions are positioned so as to overlap with each other thereby forming the respective pairs of first outlet portions which are to be connected with each other.
Claim 13
Dependent Claim
24 words
A layered coil in accordance with claim 9, further comprising a core of ferrite, a part of said core being positioned in said holes.
Claim 14
Dependent Claim
28 words
A layered coil in accordance with claim 9, wherein said coil conductors are arranged so as to spirally extend around peripheries of said holes of said respective insulators.
Claim 15
Dependent Claim
21 words
A layered coil in accordance with claim 1, wherein said plurality of coil conductors are connected in series to each other.
Claim 16
Dependent Claim
55 words
A layered coil in accordance with claim 5, wherein said first coil conductor is arranged so as to extend along a first direction on a surface of a first insulator and said second coil conductor is arranged to extend along a second direction, opposite to said first direction, on a surface of a second insulator.
Claim 17
Dependent Claim
31 words
A layered coil in accordance with claim 9, wherein said first outlet portion of said first coil conductor is spot welded with said first outlet portion of said second coil conductor.
Claim 18
Dependent Claim
30 words
A layered coil in accordance with claim 9, further comprising a terminal, one of said outlet portions of one of said plurality of coil conductors being connected with said terminal.
Claim 19
Dependent Claim
23 words
A layered coil in accordance with claim 16, further comprising a case for retaining said layered product, said terminal extending from said case.
Claim 20
Dependent Claim
31 words
A layered coil in accordance with claim 16, wherein said outlet portion which is connected with said terminal projects from an outer peripheral portion of one of said plurality of insulators.
Claim 21
Dependent Claim
21 words
A layered coil in accordance with claim 9, wherein said plurality of coil conductors are connected in series to each other.
References Cited (Backward Citations)
DE28947C
Cited
DE906831C
Cited
GB715226A
Cited
DE1614522A1
Cited
US3792059A
Cited
US4342143A
Cited
US4183074A
Cited
GB2031656A
Cited
EP0013460A2
Cited
EP0013782A1
Cited
JPS5958805A
Cited
GB2223624A
Cited
US4914561A
Cited
US5126971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-30 | 1998-08-01 | 1999-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-30 | 2002-08-01 | 2003-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-30 | 2006-08-01 | 2007-01-31 | $7700.00 | Window Closed / Lapsed |