US3808034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing tin layers or tin alloy layers on copper or copper alloy wires by hot tin plating
Assignee: Siemens AG
•
Filing: 1973-05-03
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Granted: 1974-04-30
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Expires: 1993-05-03
Abstract
Abstract The invention relates to a method and 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 lies approximately in 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 bores as well as the depth of the half waves are adjusted to the diameter of the wire. The copper wires tin plated according to the invention, have a uniform tin layer with a thickness >3 Mu m and are extremely solderable.
Inventors
- 👤 H Schreiner
- 👤 H Fidos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:58
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/08; C23C2/14; C23C2/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
20 words
The process of claim 1, wherein the stripper nozzle has from 5 to 8 half waves per millimeter of circumference.
Claim 2
Dependent Claim
18 words
The process of claim 1, wherein the temperature of the stripper nozzle is determined by the bath temperature.
Claim 3
Dependent Claim
192 words
Apparatus for producing a tin or a tin alloy layer on a wire of given radius formed of copper or copper alloy by hot tin plating the wire with a uniform thickness of >3 Mu , comprising means containing a bath of metal seLected from the group consisting of tin and tin alloy, a stripper nozzle having an outlet opening approximately on the level of the bath and being formed with a bore having a periphery in the shape of a wave train running between two concentric circles having radii that are adapted to the radius of the wire to be hot tin plated, the radius of the inner of said concentric circles being from 1 to 10 Mu greater than the outer tolerance of the given radius of the wire, the difference between the radii of the inner and the outer of the two concentric circles being from 20 to 80 Mu , 3 to 15 half waves of the wave train being provided for every millimeter of circumference of the inner of said concentric circles, and means for passing the wire through said bath containing means and said stripper nozzle.
Claim 4
Dependent Claim
34 words
Apparatus according to claim 4, wherein the radius of the inner circle is 2.5 to 5 Mu m greater than the outer tolerance of the radius of the wire to be hot tin plated.
Claim 5
Dependent Claim
25 words
Apparatus according to claim 4, wherein the outer of the concentric circle through which the wave train runs is at least of a circular arc.
Claim 6
Dependent Claim
18 words
Apparatus according to claim 4, wherein the stripper nozzle is of diamond, ruby, hard metal or stainless steel.
Claim 7
Dependent Claim
40 words
Apparatus according to claim 4, wherein the stripper nozzle is arrayed in a holder formed so that the stripper nozzle is parallel to the surface of the bath and is movable in the direction and opposite direction of the wire.
References Cited (Backward Citations)
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US2036048A
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US2328096A
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US2429870A
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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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |