Patent US3780698A successfully refreshed from Google Patents.
US3780698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire plating apparatus including doctoring die
Assignee: Siemens AG
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Filing: 1973-01-29
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Granted: 1973-12-25
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Expires: 1993-01-29
Abstract
Abstract The invention relates to a device for tin plating copper jump wires. The copper wire passes through a tin bath and is guided through a stripper nozzle, whose outlet opening is below the plane of the bath surface. The bore of the stripper nozzle possesses a wave shaped cross section. For a wire diameter of 0.5 mm, 4 to 20 half waves are provided and the diameter of the bore and the depth of the half waves are adjusted to the diameter of the wire. The tin plated copper wires have a uniform tin layer with a thickness > 3 Mu m and are extremely well solderable.
Inventors
- 👤 H Schreiner
- 👤 H Fidos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:40
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/08; C23C2/14; C23C2/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
Apparatus for producing tin layers or tin alloy layers on wires comprising copper or copper alloys by means of hot tin plating, with a uniform thickness of >3 Mu across the wire circumference, comprising a tin bath or a tin alloy bath having a bath surface, a flat profiled stripper nozzle beneath said bath surface, said stripper nozzle having a bore diameter defined by a wave train, which runs between two concentric circles, the radii of said circles being adjusted to the radius of the wire to be processed therethrough, and 3 to 15 half waves being provided for every millimeter of circumference of the inner of said concentric circles.
Claim 2
Dependent Claim
110 words
Apparatus for producing tin layers or tin alloy layers on wires comprising copper or copper alloys by means of hot tin plating, with a uniform thickness of >3 Mu across the wire circumference, comprising a tin bath or a tin alloy bath having a bath surface, a flat profiled stripper nozzle beneath said bath surface, said stripper nozzle having a bore diameter defined by a wave train, which runs between two concentric circles, the radii of said circles being adjusted to the radius of the wire to be processed therethrough, and 3 to 15 half waves being provided for every millimeter of circumference of the inner of said concentric circles.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1, wherein five to eight half waves are provided for each millimeter of the circumference of the inner of said concentric circles.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1, wherein the radius of the inner concentric circle is 1 to 10 Mu larger than the outer tolerance limit of the radius of the wire.
Claim 5
Dependent Claim
30 words
The apparatus of claim 3, wherein the radius of the inner concentric circle is 2.5 to 5 Mu larger than the outer tolerance limit of the radius of the wire.
Claim 6
Dependent Claim
23 words
The apparatus of claim 1, wherein the difference between the radii of the two concentric circles is from 20 to 80 Mu .
Claim 7
Dependent Claim
23 words
The apparatus of claim 5, wherein the difference between the radii of the two concentric circles is from 40 to 60 Mu .
References Cited (Backward Citations)
US1994802A
Cited
US2080518A
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US2036048A
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US2429870A
Cited
US3203826A
Cited
US3402696A
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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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |