US3918147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetic enclosure for electronic component
Assignee: Kyocera Avx Components Corp
•
Filing: 1974-03-25
•
Granted: 1975-11-11
•
Expires: 1994-03-25
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 collar having an outwardly protruding flange is disposed about the bead. This assembly and a metallic band, having a temperature coefficient of expansion greater than the glass bead, is heated and the metallic band is disposed about the collar so as to place the collar and glass bead in compression upon cooling thereby effecting a compression seal between the collar and the glass bead. A hermetic seal is then effected between the outwardly protruding flange of the container and the outwardly protruding flange of the collar.
Inventors
- 👤 Andrew Herczog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
177 words
THE METHOD OF FORMING AN ENCLOSURE COMPRISING THE STEPS OF PROVIDING A SILVER CONTAINER OPEN AT ONE DEND, FORMING FROM SAID CONTAINER MATERIAL IN 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 COLLAR HAVING AN OUTWARDLY PROTRUDING FLANGE. DISPOSING SAID COLLAR ABOUT SAID BEAD, PROVIDING A METALLIC BAND HAVING A TEMPERAURE COEFFICIEN OF EXPANSION GREATER THAN SAID GLASS BEAD. HEATING SAID METALLIC BAND, COLLAR AND GLASS BEAD. DISPOSING SAID METALLIC BAND ABOUT SAID COLLAR SO AS TO PLACE SAID COLLAR AND GLASS BEAD IN COMPRESSION UPON COOLING THERBY EFFECTING A COMPRESSION SEAL BETWEEN SAID COLLAR AND SAID GLASS BEAD. PROVIDING AN ARTICLE TO BE ENCLOSED IN SAID CONTAINER, DISPOSING SAID ARTICLE IN SAID CONTAINER DISPOSING THE OUTWARDLY PROTRUDING FLANGE OF SAID COLLAR ADJACENT THE OUTWARDLY PROTRUDING FLANGE OF SAID CONTAINER, AND HERMETICALLY SEALING SAID OUTWARDLY PROTRUDING FLANGE OF SAID COLLAR TO THE OUTWARDLY PROTRUDING FLANGE OF SAID CONTAINER.
Claim 2
Independent Claim
177 words
THE METHOD OF FORMING AN ENCLOSURE COMPRISING THE STEPS OF PROVIDING A SILVER CONTAINER OPEN AT ONE DEND, FORMING FROM SAID CONTAINER MATERIAL IN 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 COLLAR HAVING AN OUTWARDLY PROTRUDING FLANGE. DISPOSING SAID COLLAR ABOUT SAID BEAD, PROVIDING A METALLIC BAND HAVING A TEMPERAURE COEFFICIEN OF EXPANSION GREATER THAN SAID GLASS BEAD. HEATING SAID METALLIC BAND, COLLAR AND GLASS BEAD. DISPOSING SAID METALLIC BAND ABOUT SAID COLLAR SO AS TO PLACE SAID COLLAR AND GLASS BEAD IN COMPRESSION UPON COOLING THERBY EFFECTING A COMPRESSION SEAL BETWEEN SAID COLLAR AND SAID GLASS BEAD. PROVIDING AN ARTICLE TO BE ENCLOSED IN SAID CONTAINER, DISPOSING SAID ARTICLE IN SAID CONTAINER DISPOSING THE OUTWARDLY PROTRUDING FLANGE OF SAID COLLAR ADJACENT THE OUTWARDLY PROTRUDING FLANGE OF SAID CONTAINER, AND HERMETICALLY SEALING SAID OUTWARDLY PROTRUDING FLANGE OF SAID COLLAR TO THE OUTWARDLY PROTRUDING FLANGE OF SAID CONTAINER.
Claim 3
Dependent Claim
28 words
The method of claim 1 further comprising the steps of providing an electrical component, electrically connecting said lead to said component, and disposing said component within said container.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said lead is formed of tantalum.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein said outwardly protruding flange of said container is stepped and said stepped flange is crimped about the outwardly protruding flange of said collar.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein said collar is formed of silver.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein said metallic band is formed of stainless steel.
Claim 8
Dependent Claim
17 words
The method of claim 6 wherein said metallic band in shrunk-fit about said collar and glass bead.
Claim 9
Dependent Claim
23 words
The method of claim 1 wherein said outwardly protruding flange of said collar is welded to said outwardly protruding flange of said container.
Claim 10
Dependent Claim
24 words
The method of claim 1 further comprising the step of attaching a second lead to the end of said container opposite said open end.
Claim 11
Independent Claim
171 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 collar having an outwardly protruding flange and a temperature coefficient of expansion greater than said glass bead, heating said metallic collar and glass bead, disposing said collar about said bead so as to place said glass bead in compression upon cooling thereby effecting a compression seal between said collar and said glass bead, providing an article to be enclosed in said container, disposing said article in said container, disposing the outwardly protruding flange of said collar adjacent the outwardly protruding flange of said container, and hermetically sealing said outwardly protruding flange of said collar to the outwardly protruding flange of said collar to the outwardly protruding flange of said container.
Claim 12
Independent Claim
171 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 collar having an outwardly protruding flange and a temperature coefficient of expansion greater than said glass bead, heating said metallic collar and glass bead, disposing said collar about said bead so as to place said glass bead in compression upon cooling thereby effecting a compression seal between said collar and said glass bead, providing an article to be enclosed in said container, disposing said article in said container, disposing the outwardly protruding flange of said collar adjacent the outwardly protruding flange of said container, and hermetically sealing said outwardly protruding flange of said collar to the outwardly protruding flange of said collar to the outwardly protruding flange of said container.
Claim 13
Dependent Claim
28 words
The method of claim 10 further comprising the steps of providing an electrical component, electrically connecting said lead to said component, and disposing said component within said container.
Claim 14
Dependent Claim
12 words
The method of claim 10 wherein said lead is formed of tantalum.
Claim 15
Dependent Claim
29 words
The method of claim 10 wherein said outwardly protruding flange of said container is stepped and said stepped fLange is crimped about the outwardly protruding flange of said collar.
Claim 16
Dependent Claim
14 words
The method of claim 10 wherein said metallic collar is formed of stainless steel.
Claim 17
Dependent Claim
23 words
The method of claim 10 wherein said outwardly protruding flange of said collar is welded to said outwardly protruding flange of said container.
Claim 18
Dependent Claim
24 words
The method of claim 10 further comprising the step of attaching a second lead to the end of said container 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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |