US4265678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal wire cord
Assignee: Tokyo Rope Manufacturing Co Ltd
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Filing: 1978-12-08
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Granted: 1981-05-05
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Expires: 1998-12-08
Abstract
Abstract A metal wire cord which comprises a metal wire and a ternary alloy of Cu-Zn-Co coated on the surface of said metal wire. The wire cord has high drawability and such prominent adhesivity to rubber as is highly resistant to corrosion by saline water.
Inventors
- 👤 Shunji Hachisuka
- 👤 Shinji Kurashige
- 👤 Yasuo Saahiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:37
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/0666; B; B21; B21C; B21C37/00; B21C37/04; B21C37/042; B60; B60C; B60C9/00; B60C9/0007; C; C21; C21D; C21D8/00; C21D8/06; C25; C25D; C25D5/00; C25D5/10; C25D5/48; D07B2205/00; D07B2205/30; D07B2205/3021; D07B2205/3085; D07B2205/3089
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A method of manufacturing a metal wire cord, which comprises the steps of: forming on the surface of a metal wire a coating layer formed of a ternary alloy of copper, zinc and between 0.1 and 50% by weight cobalt to produce a metal wire; and drawing said metal wire.
Claim 2
Independent Claim
50 words
A method of manufacturing a metal wire cord, which comprises the steps of: forming on the surface of a metal wire a coating layer formed of a ternary alloy of copper, zinc and between 0.1 and 50% by weight cobalt to produce a metal wire; and drawing said metal wire.
Claim 3
Dependent Claim
23 words
The method according to claim 1, wherein the metal wire is drawn, until the cross sectional area is reduced by 85% to 97%.
Claim 4
Dependent Claim
53 words
The method according to claim 1, wherein the process of forming the coating layer comprises plating copper, zinc and cobalt separately in the order mentioned on said surface in the form of a multiply layer, and heating said multiply layer to cause copper, zinc and cobalt to be uniformly diffused throughout said layer.
Claim 5
Dependent Claim
28 words
The method according to claim 1, wherein the ternary alloy contains copper, zinc and cobalt in a proportion such that the precipitation of the β phase is suppressed.
Claim 6
Dependent Claim
23 words
The method according to claim 1, wherein the zinc content of the ternary alloy ranges between 10% by weight and 45% by weight.
Claim 7
Dependent Claim
23 words
The method according to claim 4, wherein the zinc content of the ternary alloy ranges between 20% by weight and 40% by weight.
Claim 8
Dependent Claim
26 words
The method according to claim 1 or claim 5 wherein the cobalt content of the ternary alloy ranges between 0.5% by weight and 30% by weight.
Claim 9
Dependent Claim
26 words
The method according to claim 1 or claim 6, wherein the cobalt content of the ternary alloy ranges between 1% by weight and 10% by weight.
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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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |