Patent US5534837A successfully refreshed from Google Patents.
US5534837A
Expired / Lapsed
US
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Orthogonal-field electrically variable magnetic device
Assignee: Boeing North American Inc
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Filing: 1994-07-28
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Granted: 1996-07-09
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Expires: 2014-07-28
Abstract
Abstract An electro-magnetic device for use in applications requiring low-profile components. The device includes a magnetic substrate with a scheme of through-holes in association with a first and second winding, plated or wired, integral to the substrate and wound orthogonal to each other. The first winding comprises the AC inductor/transformer permeability. The second winding in association with an applied DC bias current causes the permeability to vary over a wide controlled operating range.
Inventors
- 👤 Randy L. Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:59
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/08
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
84 words
An electro-magnetic device comprising: a low-profile magnetically permeable substrate; a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal; and, a second set of windings, magnetically coupled to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force; wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
Claim 2
Dependent Claim
84 words
An electro-magnetic device comprising: a low-profile magnetically permeable substrate; a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal; and, a second set of windings, magnetically coupled to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force; wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1, wherein the substrate is of manganese-zinc composition.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1, wherein the substrate is comprised of two pairs parallel rows perpendicular to each other having an equal number of apertures for windings.
Claim 5
Dependent Claim
19 words
The apparatus of claim 1, further comprising a variable DC current source for providing the direct current input signal.
Claim 6
Dependent Claim
11 words
The apparatus of claim 1, wherein the substrate is rectangular shaped.
Claim 7
Dependent Claim
110 words
An electro-magnetic device comprising: a low-profile magnetically permeable substrate; a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal; a second set of windings, magnetically coupled to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force; and a magnet of predetermined polarity coupled to or in close proximity to the substrate, said magnet also producing resultant forces orthogonal to the first resultant force; wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
Claim 8
Dependent Claim
110 words
An electro-magnetic device comprising: a low-profile magnetically permeable substrate; a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal; a second set of windings, magnetically coupled to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force; and a magnet of predetermined polarity coupled to or in close proximity to the substrate, said magnet also producing resultant forces orthogonal to the first resultant force; wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
Claim 9
Dependent Claim
12 words
The apparatus of claim 6, wherein the substrate is of manganese-zinc composition.
Claim 10
Dependent Claim
27 words
The apparatus of claim 6, wherein the substrate is comprised of two pairs parallel rows perpendicular to each other having an equal number of apertures for windings.
Claim 11
Dependent Claim
19 words
The apparatus of claim 6, further comprising a variable DC current source for providing the direct current input signal.
Claim 12
Dependent Claim
11 words
The apparatus of claim 6, wherein the substrate is rectangular shaped.
Claim 13
Dependent Claim
25 words
The apparatus of claim 10 wherein the primary winding is oriented in a general perpendicular fashion with respect to the longest edge of the substrate.
Claim 14
Dependent Claim
88 words
An electro-magnetic device comprising: a low-profile magnetically permeable substrate; a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal; and, a magnet of predetermined polarity coupled to or in close proximity to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force; wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
Claim 15
Dependent Claim
88 words
An electro-magnetic device comprising: a low-profile magnetically permeable substrate; a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal; and, a magnet of predetermined polarity coupled to or in close proximity to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force; wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
Claim 16
Dependent Claim
12 words
The apparatus of claim 12, wherein the substrate is of manganese-zinc composition.
Claim 17
Dependent Claim
27 words
The apparatus of claim 12, wherein the substrate is comprised of two pairs parallel rows perpendicular to each other having an equal number of apertures for windings.
Claim 18
Dependent Claim
11 words
The apparatus of claim 12, wherein the substrate is rectangular shaped.
Claim 19
Dependent Claim
25 words
The apparatus of claim 12 wherein the primary winding is oriented in a general perpendicular fashion with respect to the longest edge of the substrate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-09 | 2000-01-08 | 2000-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-09 | 2004-01-08 | 2004-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-09 | 2008-01-08 | 2008-07-09 | $7700.00 | Window Closed / Lapsed |