US3824518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniaturized inductive component
Assignee: Piconics Inc
•
Filing: 1973-03-05
•
Granted: 1974-07-16
•
Expires: 1993-03-05
Abstract
Abstract There is disclosed an inductive component including a ceramic substrate having metalized strips affixed thereto, an inductive element preferably in the form of a coil wound upon a ferrite core attached to the strips, and an epoxy encapsulent enclosing the inductive element and forming with the ceramic substrate a unitary inductive component. The substrate is constructed with oppositely sloping walls arranged to provide an interlocking dovetail arrangement with the encapsulent thereby providing an improved bonding therebetween to prevent separation between the substrate and encapsulent when the component is soldered in a circuit.
Inventors
- 👤 S Slenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:57
CPC Classifications
H; H01; H01F; H01F5/00; H01F17/00; H01F17/04; H01F17/045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A miniature inductive component comprising; a ceramic plate-like quadrilateral-shaped substrate having pairs of opposing side walls, a pair of metal members spacedly disposed and each affixed at and extending along opposite respective side walls of one pair of opposing side walls of said substrate, an inductive element having opposite ends each coupling respectively to one of said metal members of said pair of metal members, said substrate having one surface in facing relationship to said element, each of the other pair of opposing side walls of said substrate having a notched section, and an encapsulant surrounding said element and disposed in said notched section and forming opposite joints with said substrate.
Claim 2
Dependent Claim
111 words
A miniature inductive component comprising; a ceramic plate-like quadrilateral-shaped substrate having pairs of opposing side walls, a pair of metal members spacedly disposed and each affixed at and extending along opposite respective side walls of one pair of opposing side walls of said substrate, an inductive element having opposite ends each coupling respectively to one of said metal members of said pair of metal members, said substrate having one surface in facing relationship to said element, each of the other pair of opposing side walls of said substrate having a notched section, and an encapsulant surrounding said element and disposed in said notched section and forming opposite joints with said substrate.
Claim 3
Dependent Claim
28 words
The component of claim 1 wherein the sidewall of the notched section is slanted and the opposite slanted side walls diverge in the direction of said one surface.
Claim 4
Dependent Claim
28 words
The component of claim 2 wherein each said notched section is arcuate being provided by a grinding at an angle to the plane defined by the plate-like substrate.
Claim 5
Dependent Claim
27 words
The component of claim 3 wherein the notched sections are symmetrically disposed and provide a reduced distance between the slanted walls at the middle of the substrate.
Claim 6
Dependent Claim
24 words
The component of claim 4 wherein each of the other pair of opposing side walls includes straight wall sections separated by said notched section.
Claim 7
Dependent Claim
28 words
The component of claim 5 wherein each said metal member is U-shaped and forms metal strips along the entire length of said one pair of opposing side walls.
Claim 8
Dependent Claim
39 words
The component of claim 6 wherein said inductive element includes a coil of wire and a core having the wire wound on the core, said core being arranged to extend in a direction between opposite corners of said substrate.
References Cited (Backward Citations)
US2392311A
Cited
US2391038A
Cited
US2850687A
Cited
US2993082A
Cited
US3201729A
Cited
US3259861A
Cited
US3321168A
Cited
US3501582A
Cited
US3541478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |