US3922773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a hermetic enclosure
Assignee: Kyocera Avx Components Corp
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Filing: 1974-07-17
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Granted: 1975-12-02
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Expires: 1994-07-17
Abstract
Abstract A hermetic enclosure for an electrical component, particularly for a tantalum capacitor, and a method of forming it is disclosed. A silver container is provided having an open end at which an outwardly protruding flange is formed. A quantity of sealing glass is sealed to a lead and formed into a bead about the lead intermediate the ends thereof. A metallic member having an aperture therein is provided and the bead is sealed to the surface of the aperture bordering portion of the metallic member. A silver ring is disposed on the surface of the metallic member and the peripheral portion of the metallic member is folded over and pressed into a portion of the silver ring to form a compression seal therebetween. This assembly is disposed adjacent the outwardly protruding flange of the container with the lead extending from within the container to the exterior thereof. The protruding flange is folded over the metallic member so that it contacts the exposed inner portion of the silver ring where it is hermetically sealed to the silver ring.
Inventors
- 👤 Jan A Marien
- 👤 David R Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:17
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
259 words
The method of forming an enclosure comprising the steps of providing a silver container open at one end, forming from said container material a unitary outwardly protruding flange at the open end of said container, providing a lead, sealing to said lead a quantity of sealing glass to form a bead about said lead intermediate the ends thereof, providing a metallic member having an aperture therein, sealing to the surface of the aperture bordering portion of said metallic member a coating of sealing glass, fusing said glass bead to said glass coating, said lead being disposed within said aperture and extending therethrough and being spaced from said member, disposing a silver ring on said surface of said metallic member intermediate said coating of sealing glass and the peripheral portion thereof, folding said peripheral portion of said metallic member so that it engages a portion of said silver ring, pressing said peripheral portion into said silver ring to form a compression seal therebetween, the inner portion of said silver ring remaining exposed after said pressing, providing a device, connecting said lead to said device, disposing the assembly so formed in a manner so that said metallic member is adjacent said outwardly protruding flange of said container and said device is within said container, said lead extending from said device within said container to the exterior thereof, folding said outwardly protruding flange over said metallic member so that said flange is in contact with said exposed inner portion of said silver ring, and hermetically sealing said flange to said silver ring.
Claim 2
Independent Claim
259 words
The method of forming an enclosure comprising the steps of providing a silver container open at one end, forming from said container material a unitary outwardly protruding flange at the open end of said container, providing a lead, sealing to said lead a quantity of sealing glass to form a bead about said lead intermediate the ends thereof, providing a metallic member having an aperture therein, sealing to the surface of the aperture bordering portion of said metallic member a coating of sealing glass, fusing said glass bead to said glass coating, said lead being disposed within said aperture and extending therethrough and being spaced from said member, disposing a silver ring on said surface of said metallic member intermediate said coating of sealing glass and the peripheral portion thereof, folding said peripheral portion of said metallic member so that it engages a portion of said silver ring, pressing said peripheral portion into said silver ring to form a compression seal therebetween, the inner portion of said silver ring remaining exposed after said pressing, providing a device, connecting said lead to said device, disposing the assembly so formed in a manner so that said metallic member is adjacent said outwardly protruding flange of said container and said device is within said container, said lead extending from said device within said container to the exterior thereof, folding said outwardly protruding flange over said metallic member so that said flange is in contact with said exposed inner portion of said silver ring, and hermetically sealing said flange to said silver ring.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein said peripheral portion embodies a protrusion that is also pressed into said silver ring to effect said compression seal.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said device is an electrical component.
Claim 5
Dependent Claim
14 words
The method of claim 3 wherein said electrical component is a tantalum capacitor slug.
Claim 6
Dependent Claim
12 words
The method of claim 4 wherein said lead is formed of tantalum.
Claim 7
Dependent Claim
13 words
The method of claim 5 wherein said metallic member is formed of tantalum.
Claim 8
Dependent Claim
16 words
The method of claim 6 wherein said outwardly protruding flange is welded to said silver ring.
Claim 9
Dependent Claim
25 words
The method of claim 7 further comprising the step of electrically connecting a second lead to said container at the end opposite said open end.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein said lead is formed of tantalum.
Claim 11
Dependent Claim
13 words
The method of claim 1 wherein said metallic member is formed of tantalum.
Claim 12
Dependent Claim
16 words
The method of claim 1 wherein said outwardly protruding flange is welded to said silver ring.
Claim 13
Dependent Claim
25 words
The method of claim 1 further comprising the step of electrically connecting a second lead to said container at the end opposite saiD open end.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |