US4173712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuit component protecting device
Assignee: Sanwa Business Credit Corp
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Filing: 1978-08-30
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Granted: 1979-11-06
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Expires: 1998-08-30
Abstract
Abstract A device for protecting electrical circuit components from surges induced by transient electromagnetic fields by isolating such components in a region of substantially uniform and constant field is disclosed. The device generally comprises at least two substantially identical conducting members in spaced, stacked relation, forming in the spaces between adjacent members a central component receiving region of substantially uniform and constant field surrounded in turn by a transitional region, a high energy storage region, and a second transitional region such that under surge conditions the device will remain electrically stable and the energy of the surge will be stored in the high energy storage region leaving the component protecting region substantially unaffected.
Inventors
- 👤 Kenneth H. Purser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:13
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0066
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
216 words
A device for protecting electrical circuit components from the effects of transient electromagnetic fields in the external environment surrounding the device comprising at least two substantially identical conductive members in spaced, stacked relation; each said conductive member comprising a substantially flat, permissibly apertured, inner portion, a substantially flat flange portion adjacent its periphery, and a wall portion inclined outwardly relative to said central portion, said wall portion connected to said flange portion and to said inner portion by first and second gradually sloping arch portions respectively; and a layer of dielectric material filling the spaces between each conductive member and the conductive members adjacent thereto, each said layer being adapted to allow the location of an electrical circuit component in the region between the inner portions of adjacent conductive members; said device thereby defining in the spaces between adjacent conductive members a component protecting region between adjacent inner portions surrounded in turn by a first transitional region between adjacent second arch portions, a high energy storage region between adjacent wall portions, and a second transitional region between adjacent first arch and flange portions, such that the device will remain electrically stable under surge conditions and the energy of a surge will be stored in the high energy storage region leaving the component protecting region substantially unaffected.
Claim 2
Independent Claim
216 words
A device for protecting electrical circuit components from the effects of transient electromagnetic fields in the external environment surrounding the device comprising at least two substantially identical conductive members in spaced, stacked relation; each said conductive member comprising a substantially flat, permissibly apertured, inner portion, a substantially flat flange portion adjacent its periphery, and a wall portion inclined outwardly relative to said central portion, said wall portion connected to said flange portion and to said inner portion by first and second gradually sloping arch portions respectively; and a layer of dielectric material filling the spaces between each conductive member and the conductive members adjacent thereto, each said layer being adapted to allow the location of an electrical circuit component in the region between the inner portions of adjacent conductive members; said device thereby defining in the spaces between adjacent conductive members a component protecting region between adjacent inner portions surrounded in turn by a first transitional region between adjacent second arch portions, a high energy storage region between adjacent wall portions, and a second transitional region between adjacent first arch and flange portions, such that the device will remain electrically stable under surge conditions and the energy of a surge will be stored in the high energy storage region leaving the component protecting region substantially unaffected.
Claim 3
Dependent Claim
11 words
The device of claim 1 wherein the dielectric material is gaseous.
Claim 4
Dependent Claim
25 words
The device of claim 1 wherein the dielectric material is gaseous in the region between the inner portions of adjacent conductive members and solid elsewhere.
Claim 5
Dependent Claim
34 words
The device of claim 1 wherein the conductive members are of different thicknesses and the relative thicknesses of the layer of dielectric between adjacent conductive members is different between each pair of conductive members.
Claim 6
Dependent Claim
38 words
The device of claim 1 further comprising means in each of said conductive members for connecting an electrical circuit component located within the region between the inner portions of adjacent conductive members to the remainder of its circuit.
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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |