US5600293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated magnetic exploding foil initiator fire set
Assignee: United States Department of the Army
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Filing: 1994-06-14
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Granted: 1997-02-04
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Expires: 2014-06-14
Abstract
Abstract An integrated magnetic exploding foil initiator fire set includes a DC-DC converter with a first transformer, a triggering mechanism with a second transformer, and an integrated magnetic structure for the respective transformers. Inductive interference is minimized in the respective transformers by the construction and placement of the transformer windings. The use of planar magnetic core material and flexprint or printed circuit technologies for the windings reduces the cost and weight of the structure and provides a compact construction. Thus, the triggering mechanism provides higher energy and voltage output and eliminate the need for expensive spark-gap switches.
Inventors
- 👤 Donald Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:58
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42D1/045; F42D1/05; H; H01; H01F; H01F27/00; H01F27/28; H01F27/2804; H01F27/2819
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
92 words
An integrated magnetic structure comprising: a first transformer including a first winding and a second winding, a second transformer including a third winding and a fourth winding, and a core element including a center pole, a first outer pole, and a second outer pole, wherein said first winding and said second windings are positioned on said center pole, and said third winding and said fourth winding are positioned on said first outer pole and said second outer pole, so that inductive interference between said first transformer and said second transformer is minimized.
Claim 2
Dependent Claim
92 words
An integrated magnetic structure comprising: a first transformer including a first winding and a second winding, a second transformer including a third winding and a fourth winding, and a core element including a center pole, a first outer pole, and a second outer pole, wherein said first winding and said second windings are positioned on said center pole, and said third winding and said fourth winding are positioned on said first outer pole and said second outer pole, so that inductive interference between said first transformer and said second transformer is minimized.
Claim 3
Dependent Claim
28 words
The structure of claim 1, wherein a first flux generated by said first winding induces equal and opposite voltages in said third winding and said fourth winding, respectively.
Claim 4
Dependent Claim
19 words
The structure of claim 1, wherein a second flux generated by said third winding cancels in said center pole.
Claim 5
Dependent Claim
18 words
The structure of claim 1, wherein said second winding and said fourth winding are configured to minimize capacitance.
Claim 6
Dependent Claim
52 words
The structure of claim 4, wherein said second winding is on a first insulating layer with a first side and second side and said second winding is positioned on both sides of said first insulating layer so that a track on said first side is over a space on said second side.
Claim 7
Dependent Claim
52 words
The structure of claim 4, wherein said fourth winding is on a second layer with a first side and a second side and said fourth winding is positioned on both sides of said second insulating layer so that a track on said first side is over a space on said second side.
Claim 8
Dependent Claim
65 words
The structure of claim 4, wherein said first winding is on a third insulating layer with a first side and a second side and said first winding is positioned on both sides of said third insulating layer so that a track on said first side is over a track on said second side to reduce a conductive cross-section seen by said second and fourth windings.
Claim 9
Dependent Claim
15 words
The structure of claim 7, wherein spaces between adjacent tracks are wider than said tracks.
Claim 10
Dependent Claim
65 words
The structure of claim 4, wherein said third winding is on a fourth insulating layer with a first side and a second side and said third winding is positioned on both sides of said fourth insulating layer so that a track on said first side is over a track on said second side to reduce a conductive cross-section seen by said second and fourth windings.
Claim 11
Dependent Claim
15 words
The structure of claim 9, wherein spaces between adjacent tracks are wider than said tracks.
Claim 12
Dependent Claim
14 words
The structure of claim 1, wherein said core element is a planar magnetic device.
Claim 13
Dependent Claim
19 words
The structure of claim 1, wherein said first, second, third, and fourth windings are flexprint or printed circuit windings.
Claim 14
Dependent Claim
123 words
An integrated magnetic exploding foil initiator fire set system comprising: a DC-DC converter including a first transformer, a trigger circuit including a second transformer, and an integrated magnetic structure including said first transformer so that inductive interference between said first transformer and said second transformer is minimized, and, wherein said first transformer includes a first winding and a second winding, said second transformer includes a third winding and a fourth winding, and further comprising: a core element including a center pole, a first outer pole, and a second outer pole, said first winding and said second winding are positioned on said center pole, and said third winding and said fourth winding are positioned on said first outer pole and said second outer pole.
Claim 15
Dependent Claim
123 words
An integrated magnetic exploding foil initiator fire set system comprising: a DC-DC converter including a first transformer, a trigger circuit including a second transformer, and an integrated magnetic structure including said first transformer so that inductive interference between said first transformer and said second transformer is minimized, and, wherein said first transformer includes a first winding and a second winding, said second transformer includes a third winding and a fourth winding, and further comprising: a core element including a center pole, a first outer pole, and a second outer pole, said first winding and said second winding are positioned on said center pole, and said third winding and said fourth winding are positioned on said first outer pole and said second outer pole.
Claim 16
Dependent Claim
28 words
The system of claim 13, wherein a first flux generated by said first winding induces equal and opposite voltages in said third winding and said fourth winding, respectively.
Claim 17
Dependent Claim
19 words
The system of claim 13, wherein a second flux generated by said third winding cancels in said center pole.
Claim 18
Dependent Claim
18 words
The system of claim 13, wherein said second winding and said fourth winding are configured to minimize capacitance.
Claim 19
Dependent Claim
53 words
The system of claim 16, wherein said second winding is on a first insulating layer with a first side and a second side and said second winding is positioned on both sides of said first insulating layer so that a track on said first side is over a space on said second side.
Claim 20
Dependent Claim
53 words
The system of claim 16, wherein said fourth winding is on a second insulating layer with a first side and a second side and said fourth winding is positioned on both sides of said second insulating layer so that a track on said first side is over a space on said second side.
Claim 21
Dependent Claim
65 words
The system of claim 16, wherein said first winding is on a third insulating layer with a first side and a second side and said first winding is positioned on both sides of said third insulating layer so that a track on said first side is over a track on said second side to reduce a conductive cross-section seen by said second and fourth windings.
Claim 22
Dependent Claim
15 words
The system of claim 19, wherein spaces between adjacent tracks are wider than said tracks.
Claim 23
Dependent Claim
64 words
The system of claim 16, wherein said third winding is on a fourth insulating layer with a first side and second side and said third winding is positioned on both sides of said fourth insulating layer so that a track on said first side is over a track on said second side to reduce a conductive cross-section seen by said second and fourth windings.
Claim 24
Dependent Claim
15 words
The system of claim 21, wherein spaces between adjacent tracks are wider than said tracks.
Claim 25
Dependent Claim
14 words
The system of claim 13, wherein said core element is a planar magnetic device.
Claim 26
Dependent Claim
19 words
The system of claim 13, wherein said first, second, third, and fourth windings are flexprint or printed circuit windings.
Claim 27
Dependent Claim
33 words
The system of claim 13, wherein said DC-DC converter further comprises: a first switching transistor coupled in series with said first winding, and a first capacitor coupled in parallel with said second winding.
Claim 28
Dependent Claim
33 words
The system of claim 25, wherein said trigger circuit further comprises: a second switching transistor coupled in series with said third winding, and a second capacitor coupled in parallel with said third winding.
Claim 29
Dependent Claim
45 words
The system of claim 26, further comprising: a spark-gap switch with a triggering element, said spark-gap switch coupled to said first capacitor and said triggering element coupled to said fourth winding, and an exploding foil initiator coupled to said spark-gap switch and said first capacitor.
References Cited (Backward Citations)
US4841925A
Cited
US5198969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |