Patent US5595514A successfully refreshed from Google Patents.
US5595514A
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Feedthrough pin and process for its preparation, and electrical feedthrough made therewith
Assignee: OL Security LLC
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Filing: 1994-07-19
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Granted: 1997-01-21
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Expires: 2014-07-19
Abstract
Abstract A feedthrough (34) is formed of a feedthrough plate (44) having at least one bore (46) therethrough and a feedthrough pin (48) hermetically sealed into the bore (46). The feedthrough pin (48) includes an elongated pin (50) having an axis of elongation (52), a recess (54) in at least one end of the pin (50), the recess (54) extending parallel to the axis of elongation (52), and a gold coating (56) within the recess (54). There are preferably a plurality of bores (46) in the feedthrough plate (48) and a corresponding plurality of the feedthrough pins (48). The gold coatings (56) at the ends of the feedthrough pins (48) are desirably lapped to ensure coplanarity and a smooth surface finish especially suited for wire bonding or tab bonding.
Inventors
- 👤 Timothy S. Romano
- 👤 Tom K. Evans
- 👤 Gary B. Hughes
- 👤 Karl H. Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:21
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/521; H01R13/02; H01R13/03; H01R4/00; H01R4/58; H01R4/68; Y; Y10; Y10S; Y10S439/00; Y10S439/933; Y10S439/935; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
51 words
A feedthrough pin, comprising: an elongated pin having an axis of elongation; a recess in at least one end of the pin, the recess extending parallel to the axis of elongation; and a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 2
Dependent Claim
51 words
A feedthrough pin, comprising: an elongated pin having an axis of elongation; a recess in at least one end of the pin, the recess extending parallel to the axis of elongation; and a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 3
Dependent Claim
15 words
The feedthrough pin of claim 1, wherein the coating of gold has a lapped surface.
Claim 4
Dependent Claim
14 words
The feedthrough pin of claim 1, wherein the elongated pin is made of molybdenum.
Claim 5
Dependent Claim
16 words
The feedthrough pin of claim 1, wherein the recess has a depth of about 0.015 inches.
Claim 6
Dependent Claim
25 words
The feedthrough pin of claim 1, wherein the coating of gold extends outside of the recess and onto a lateral surface of the elongated pin.
Claim 7
Dependent Claim
32 words
The feedthrough pin of claim 1, wherein there is a recess in each end of the pin extending parallel to the axis of elongation, and a coating of gold within each recess.
Claim 8
Dependent Claim
79 words
A feedthrough, comprising: a feedthrough plate having at least one bore therethrough; and a feedthrough pin hermetically sealed in the at least one bore of the feedthrough plate, the feedthrough pin comprising an elongated pin having an axis of elongation, a recess in at least one end of the pin, the recess extending parallel to the axis of elongation, and a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 9
Dependent Claim
79 words
A feedthrough, comprising: a feedthrough plate having at least one bore therethrough; and a feedthrough pin hermetically sealed in the at least one bore of the feedthrough plate, the feedthrough pin comprising an elongated pin having an axis of elongation, a recess in at least one end of the pin, the recess extending parallel to the axis of elongation, and a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 10
Dependent Claim
14 words
The feedthrough of claim 7, wherein the coating of gold has a lapped surface.
Claim 11
Dependent Claim
13 words
The feedthrough of claim 7, wherein the elongated pin is made of molybdenum.
Claim 12
Dependent Claim
15 words
The feedthrough of claim 7, wherein the recess has a depth of about 0.015 inches.
Claim 13
Dependent Claim
24 words
The feedthrough of claim 7, wherein the coating of gold extends outside of the recess and onto a lateral surface of the elongated pin.
Claim 14
Dependent Claim
31 words
The feedthrough of claim 7, wherein there is a recess in each end of the pin extending parallel to the axis of elongation, and a coating of gold within each recess.
Claim 15
Dependent Claim
80 words
The feedthrough of claim 7, wherein there are a plurality of bores in the feedthrough plate, and wherein there is a feedthrough pin sealed into each of the bores, each feedthrough pin comprising an elongated pin having an axis of elongation, a recess in at least one end of the pin, the recess extending parallel to the axis of elongation, and a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 16
Dependent Claim
31 words
The feedthrough of claim 13, wherein the coating of gold on each feedthrough pin has a lapped surface, and wherein the lapped surfaces of the plurality of feedthrough pins are coplanar.
Claim 17
Independent Claim
61 words
A method for preparing a feedthrough pin, comprising the steps of furnishing an elongated pin having an axis of elongation; forming a recess in at least one end of the pin, the recess extending parallel to the axis of elongation; and applying a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 18
Independent Claim
61 words
A method for preparing a feedthrough pin, comprising the steps of furnishing an elongated pin having an axis of elongation; forming a recess in at least one end of the pin, the recess extending parallel to the axis of elongation; and applying a coating of gold within the recess, the gold being present in an amount sufficient to fill the recess.
Claim 19
Dependent Claim
35 words
The method of claim 15, including the additional step, after the step of applying a coating of gold, of lapping the end of the pin to form a lapped surface on the coating of gold.
Claim 20
Dependent Claim
10 words
A feedthrough pin prepared by the process of claim 15.
Claim 21
Dependent Claim
39 words
The method of claim 15, wherein the step of applying a coating includes the step of furnishing a gold-containing slurry, applying the slurry to the recess, and heating the slurry to a temperature above the melting point of gold.
Claim 22
Dependent Claim
95 words
A feedthrough, comprising: a feedthrough plate having a plurality of bores therethrough; and a feedthrough pin hermetically sealed in each of the plurality of bores, each feedthrough pin comprising an elongated pin having an axis of elongation, a recess in an end of the pin, the recess extending parallel to the axis of elongation, and a coating of gold within the recess and having an exposed surface, the gold being present in an amount sufficient to fill the recess, wherein the exposed surfaces of the gold coatings of the plurality of feedthrough pins are coplanar.
Claim 23
Dependent Claim
95 words
A feedthrough, comprising: a feedthrough plate having a plurality of bores therethrough; and a feedthrough pin hermetically sealed in each of the plurality of bores, each feedthrough pin comprising an elongated pin having an axis of elongation, a recess in an end of the pin, the recess extending parallel to the axis of elongation, and a coating of gold within the recess and having an exposed surface, the gold being present in an amount sufficient to fill the recess, wherein the exposed surfaces of the gold coatings of the plurality of feedthrough pins are coplanar.
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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) | 2000-01-21 | 2000-07-22 | 2001-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-21 | 2004-07-22 | 2005-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-21 | 2008-07-22 | 2009-01-21 | $7700.00 | Window Closed / Lapsed |