US4749965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniaturized gyromagnetic device
Assignee: Thales SA
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Filing: 1986-12-17
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Granted: 1988-06-07
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Expires: 2006-12-17
Abstract
Abstract A miniaturized and integrated gyromagnetic device in which a center conductor is mounted between a pair of dielectric wafers and ferrite conductors to define a circular inner configuration. A pressure washer is welded to a square casing and mounts a magnet, the wafers, ferrite conductors and a pair of ground plates to absorb thermal expansion during operation.
Inventors
- 👤 Julien Prevot
- 👤 Kamel Chabani
- 👤 Michel Courgeon
- 👤 Denis Duquenoy
- 👤 Roger Duquenoy
- 👤 Regis Le Navenec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:42
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/383; H01P1/387; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/53; Y10T29/5313; Y10T29/53261; Y10T29/53265; Y10T29/53678
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A miniaturized and integrated gyromagnetic device comprising; a casing having a square outer contour; a center conductor having two sides; a ferrite wafer disposed on each side of said center conductor and having an outer edge defining a circular contour; a pair of dielectric wafers each inscribing one of said ferrite wafers and having an outer edge contour corresponding to a triangle; first and second ground plates sandwiching said wafers; a magnet disposed adjacent one of said ground plates; and a pressure washer mounted in said casing having, on one side, a plurality of tongues folded at right angles to hold the magnet and, on the other side, a plurality of slanted tongues to absorb the thermal expansion of the device during operation when said casing is closed by electrically welding.
Claim 2
Dependent Claim
131 words
A miniaturized and integrated gyromagnetic device comprising; a casing having a square outer contour; a center conductor having two sides; a ferrite wafer disposed on each side of said center conductor and having an outer edge defining a circular contour; a pair of dielectric wafers each inscribing one of said ferrite wafers and having an outer edge contour corresponding to a triangle; first and second ground plates sandwiching said wafers; a magnet disposed adjacent one of said ground plates; and a pressure washer mounted in said casing having, on one side, a plurality of tongues folded at right angles to hold the magnet and, on the other side, a plurality of slanted tongues to absorb the thermal expansion of the device during operation when said casing is closed by electrically welding.
Claim 3
Dependent Claim
48 words
A device as in claim 1 wherein said ground plates are non-magnetic, one of said plates having tongues extending toward the other plate and said other plate having slits for receiving said tongues to precisely position said plates and fixedly clamp said conductor, wafers and ground plates together.
Claim 4
Dependent Claim
46 words
A device as in claim 2, wherein the outer edge contour of said dielectric wafers is shaped like an isosceles triangle with truncated vertices and corresponds to the outer contour of said ground plates so that said tongues precisely position said ferrite conductors and said wafers.
Claim 5
Dependent Claim
19 words
A device as in claim 1 wherein said center conductor includes at least two arms each comprising a microstrip.
Claim 6
Dependent Claim
42 words
A device as in claim 1 wherein said center conductor further includes an outwardly extending energy absorbing arm and further including a pair of absorbing blocks in the planes respectively of said dielectric wafers, said absorbing arm being disposed between said blocks.
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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) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |