Patent US2065574A successfully refreshed from Google Patents.
Patent US4614995A successfully refreshed from Google Patents.
US4614995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed ceramic cased surface mount capacitor
Assignee: Electronic Concepts Inc
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Filing: 1984-11-01
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Granted: 1986-09-30
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Expires: 2004-11-01
Abstract
Abstract A planar terminated capacitor and a method for fabricating planar terminated capacitors is disclosed wherein a capacitor element is inserted in a nonconductive ceramic case. The case extends outwardly beyond the ends of the capacitor element forming cavities at each end of the case. Metal end caps are positioned at the ends of the case substantially enclosing the cavities. The end caps are electrically coupled to the ends of the capacitor element.
Inventors
- 👤 Bernard Lavene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:30
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/248; H01G2/00; H01G2/02; H01G2/06; H01G2/065; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3431; H05K3/3442; H05K2201/00; H05K2201/10; H05K2201/10613; H05K2201/10621; H05K2201/10636; H05K2201/10651; H05K2201/10742; H05K2201/10886; H05K2201/10916; Y; Y02; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
130 words
A planar hermetically sealed ceramic surface mount capacitor comprising: (a) a capacitor element having first and second terminals at opposite ends thereof; (b) a ceramic case for surrounding said capacitor element including first and second solder bands adhered to and completely encircling the outer surface of the case; and (c) first and second metal end caps each positioned at opposite ends of the solder band encircled case wherein the first end cap surrounds the first solder band and is electrically coupled to the first terminal and the second end cap surrounds the second solder band and is electrically coupled to the second terminal and both metal end caps are secured to the solder bands along the entire perimeter of the outer surface of the case thereby hermetically sealing the capacitor.
Claim 2
Dependent Claim
130 words
A planar hermetically sealed ceramic surface mount capacitor comprising: (a) a capacitor element having first and second terminals at opposite ends thereof; (b) a ceramic case for surrounding said capacitor element including first and second solder bands adhered to and completely encircling the outer surface of the case; and (c) first and second metal end caps each positioned at opposite ends of the solder band encircled case wherein the first end cap surrounds the first solder band and is electrically coupled to the first terminal and the second end cap surrounds the second solder band and is electrically coupled to the second terminal and both metal end caps are secured to the solder bands along the entire perimeter of the outer surface of the case thereby hermetically sealing the capacitor.
Claim 3
Dependent Claim
24 words
The capacitor of claim 1 in which there is further provided an electrically conductive spring adjacent to and electrically coupled to the second terminal.
Claim 4
Dependent Claim
12 words
The capacitor of claim 2 in which the spring comprises a C-spring.
Claim 5
Dependent Claim
13 words
The capacitor of claim 2 in which the spring comprises a wave spring.
Claim 6
Dependent Claim
23 words
The capacitor of claim 2 in which there is further provided an additional spring adjacent to and electrically coupled to the first terminal.
Claim 7
Dependent Claim
16 words
The capacitor of claim 1 in which the capacitor element comprises a wound chopped capacitor element.
Claim 8
Dependent Claim
17 words
The capacitor of claim 6 in which the wound chopped capacitor is wrapped in an outer web.
Claim 9
Dependent Claim
20 words
The capacitor of claim 1 in which the terminals comprise metal particles deposed by means of an electric arc gun.
Claim 10
Dependent Claim
20 words
The capacitor of claim 1 in which the bands are disposed substantially close to the ends of the ceramic case.
Claim 11
Dependent Claim
17 words
The capacitor of claim 1 in which the ends of the case extend substantially beyond the terminals.
Claim 12
Independent Claim
143 words
A method of hermetically sealing a capacitor element having first and second terminals at opposite ends in a ceramic case to form a planar surface mount capacitor comprising the steps of: (a) adhering first and second solder bands to the outer surface of the ceramic case the solder bands completely encircling the outer surface of the case; (b) inserting the capacitor element into the solder band encircled case; (c) surrounding the first solder band by a first metal end cap and electrically connecting the first end cap to the first terminal and surrounding the second solder band by a second metal end cap and electrically connecting the second end cap to the second terminal; and (d) hermetically sealing the first and second end caps to the respective first and second solder bands along the entire perimeter of the outer surface of the case.
Claim 13
Independent Claim
143 words
A method of hermetically sealing a capacitor element having first and second terminals at opposite ends in a ceramic case to form a planar surface mount capacitor comprising the steps of: (a) adhering first and second solder bands to the outer surface of the ceramic case the solder bands completely encircling the outer surface of the case; (b) inserting the capacitor element into the solder band encircled case; (c) surrounding the first solder band by a first metal end cap and electrically connecting the first end cap to the first terminal and surrounding the second solder band by a second metal end cap and electrically connecting the second end cap to the second terminal; and (d) hermetically sealing the first and second end caps to the respective first and second solder bands along the entire perimeter of the outer surface of the case.
Claim 14
Dependent Claim
20 words
The method of claim 11 in which step (b) includes inverting a wound chopped capacitor element into the ceramic case.
Claim 15
Dependent Claim
43 words
The method of claim 11 in which step (a) includes the steps of firing a metal onto portions of the outer surface the ceramic case where the first and second solder bands are to be adhered and depositing tin on the fired portions.
Claim 16
Dependent Claim
29 words
The method of claim 11 in which step (c) includes positioning an electrically conductive spring between the second end cap and the second terminal for providing the electrical connection.
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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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |