US4717901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic component, especially for a chip inductance
Assignee: Siemens AG
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Filing: 1987-04-06
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Granted: 1988-01-05
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Expires: 2007-04-06
Abstract
Abstract An electronic component includes a solid core part having a perpendicular prismatic spatial shape and lateral surfaces, the core part having a recess in the form of a blind hole formed therein defining a winding space, and electrical contact layers disposed on at least some of the lateral surfaces of the core part.
Inventors
- 👤 Lothar Autenrieth
- 👤 Kurt Marth
- 👤 Josef Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:26
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/29; H01F27/292; H01F17/00; H01F17/02; H01F17/04; H01F2017/048
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
101 words
Chip inductance comprising a solid core part having a perpendicular prismatic spatial shape; the core part having a hollow-cylindrical recess therein shaped for receiving a winding, said recess surrounding a pad being contiguous in one piece with the core part and canals connecting the lateral surfaces of the core part with the recess; the canals being open in direcion facing away from the core part; electrical contact surfaces being supported by said lateral surfaces; and at least one winding wound onto the pad; the ends of the winding being guided through the canals to the electric contact surfaces and connected therewith.
Claim 2
Dependent Claim
101 words
Chip inductance comprising a solid core part having a perpendicular prismatic spatial shape; the core part having a hollow-cylindrical recess therein shaped for receiving a winding, said recess surrounding a pad being contiguous in one piece with the core part and canals connecting the lateral surfaces of the core part with the recess; the canals being open in direcion facing away from the core part; electrical contact surfaces being supported by said lateral surfaces; and at least one winding wound onto the pad; the ends of the winding being guided through the canals to the electric contact surfaces and connected therewith.
Claim 3
Dependent Claim
13 words
Electronic component according to claim 1, wherein said core part is a cube.
Claim 4
Dependent Claim
13 words
Electronic component according to claim 1, wherein said core part is a slab.
Claim 5
Dependent Claim
15 words
Electronic component according to claim 1, wherein said core part is formed of ferromagnetic material.
Claim 6
Dependent Claim
16 words
Electronic component according to claim 1, wherein said core part is formed of electrically non-conductive material.
Claim 7
Dependent Claim
24 words
Electronic component according to claim 1, wherein said core part is formed of a material from the group consisting of ferrite, ceramic and plastic.
Claim 8
Dependent Claim
30 words
Electronic component according to claim 1, wherein said lateral surfaces of said core part on which said contact layers are disposed have open-ended canals formed therein communicating with said recess.
Claim 9
Dependent Claim
20 words
Electronic component acording to claim 7, wherein said contact layers completely cover mutually opposite lateral surfaces of said core part.
Claim 10
Dependent Claim
24 words
Electronic component according to claim 8, wherein said lateral surfaces have edges, and said contact layers extend beyond said edges toward adjacent lateral surfaces.
Claim 11
Dependent Claim
17 words
Electronic component according to claim 7, wherein said contact layers extend at least partially into said canals.
Claim 12
Dependent Claim
14 words
Electronic component according to claim 1, including a solderable layer covering said contact layers.
Claim 13
Dependent Claim
19 words
Electronic component according to claim 1, wherein given corners of said core part are bevelled for indicating proper alignment.
Claim 14
Dependent Claim
26 words
Electronic component according to claim 1, wherein said core part has a pad integral therewith, and said recess has a hollow cylindrical shape enclosing said pad.
Claim 15
Dependent Claim
48 words
Electronic component according to claim 13, wherein said recess is formed in said lateral surfaces defining a corner of said core part, said pad has an end surface set back from said corner, and including a circular disc-shaped cover covering said end surface and closing off said recess.
Claim 16
Dependent Claim
15 words
Electronic component according to claim 14, wherein said cover is level with said lateral surfaces.
Claim 17
Dependent Claim
58 words
Electronic component according to claim 13, wherein said recess is formed in said lateral surfaces defining an edge of said lateral surfaces, said edge has an offset surface formed therein set back from said edge, said pad has an end surface set back from said edge, and including a cover covering said offset surface and said end surface.
Claim 18
Dependent Claim
24 words
Electronic component according to claim 14, wherein said cover is formed of a material selected from the group consisting of ferrite, ceramic and plastic.
Claim 19
Dependent Claim
24 words
Electronic component according to claim 16, wherein said cover is formed of a material selected from the group consisting of ferrite, ceramic and plastic.
Claim 20
Dependent Claim
50 words
Electronic component according to claim 7, wherein said core part has a pad integral therewith, said recess has a hollow cylindrical shape enclosing said pad, and including at least one winding disposed on said pad and having ends extended through said canals and being in contact with said contact layers.
Claim 21
Dependent Claim
16 words
Electronic component according to claim 19, including casting compound surrounding at least part of said winding.
Claim 22
Dependent Claim
24 words
Electronic component according to claim 20, wherein said casting compound includes a material selected from the group consisting of carbonyl iron and ferrite powder.
Claim 23
Dependent Claim
13 words
Chip inductance according to claim 1, wherein said pad consists of ferromagnetic material.
Claim 24
Dependent Claim
17 words
Chip inductance according to claim 1, wherein said core part and pad consist of electrically non-conductive material.
Claim 25
Dependent Claim
16 words
Chip inductance according to claim 1, wherein the electrical contact surfaces extend partially into the canals.
Claim 26
Dependent Claim
17 words
Chip inductance according to claim 1, wherein the electrical contact surfaces are covered with a solderable layer.
Claim 27
Dependent Claim
17 words
Chip inductance according to claim 1, wherein at least the winding is cast into a casting compound.
Claim 28
Dependent Claim
12 words
Chip inductance according to claim 26, wherein the casting compound includes carbonyl-iron.
Claim 29
Dependent Claim
13 words
Chip inductance according to claim 26, wherein the casting compound includes ferrite powder.
Claim 30
Dependent Claim
16 words
Chip inductance according to claim 26 wherein the winding ends are cast into a casting compound.
Claim 31
Dependent Claim
13 words
Chip inductance according to claim 26 wherein said casting compound includes epoxy resin.
Claim 32
Dependent Claim
13 words
Chip inductance according to claim 29 wherein said casting compound includes epoxy resin.
Claim 33
Dependent Claim
13 words
Chip inductance according to claim 30 wherein said casting compound includes carbonyl iron.
Claim 34
Dependent Claim
13 words
Chip inductance according to claim 31 wherein said casting compound includes carbonyl iron.
Claim 35
Dependent Claim
13 words
Chip inductance according to claim 29 wherein said casting compound includes ferrite powder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |