US4255496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel wire reinforcing elements with a brass-cobalt alloy adhesive coating
Assignee: Bekaert NV SA
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Filing: 1979-05-21
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Granted: 1981-03-10
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Expires: 1999-05-21
Abstract
Abstract A steel wire element useful in the reinforcement of rubber compositions in which the steel wire is provided with an adhesive coating comprising a brass alloy containing 58% to 75% copper, and cobalt in an amount sufficient in use to improve the adhesion between the coated steel wire and the rubber composition. Preferably the brass alloy contains 2% to 4% of cobalt. Applications include coated steel cords for use in vehicle tires and conveyor belts and hoses.
Inventors
- 👤 Guy Haemers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:02
CPC Classifications
C; C23; C23C; C23C30/00; D; D07; D07B; D07B1/00; D07B1/06; D07B1/0606; D07B1/0666; D07B2201/00; D07B2201/20; D07B2201/2001; D07B2201/201; D07B2201/2011; D07B2205/00; D07B2205/30; D07B2205/3021; D07B2205/3085; D07B2205/3089; D07B2401/00; D07B2401/20; D07B2401/2095; D07B2501/00; D07B2501/20; D07B2501/2076; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12562; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/12917; Y10T428/12924; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31707; Y10T428/3171
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
53 words
A steel wire element for use in the reinforcement of rubber compositions wherein the steel wire is provided with an adhesive coating comprising a brass alloy containing about 58% to 75% of copper and about 0.5 to 10% of cobalt to improve the adhesion between the coated steel wire and said rubber composition.
Claim 2
Dependent Claim
53 words
A steel wire element for use in the reinforcement of rubber compositions wherein the steel wire is provided with an adhesive coating comprising a brass alloy containing about 58% to 75% of copper and about 0.5 to 10% of cobalt to improve the adhesion between the coated steel wire and said rubber composition.
Claim 3
Dependent Claim
20 words
A steel wire element as claimed in claim 1 wherein said brass alloy contains about 1% to 7% of cobalt.
Claim 4
Dependent Claim
20 words
A steel wire element as claimed in claim 2 wherein said brass alloy contains about 2% to 4% of cobalt.
Claim 5
Dependent Claim
21 words
A steel wire element as claimed in claim 1 wherein the said brass alloy contains about 67% to 75% of copper.
Claim 6
Dependent Claim
24 words
A steel wire element as claimed in claim 4 wherein the steel wire provided with said adhesive coating has been subjected to work hardening.
Claim 7
Dependent Claim
15 words
A steel wire element as claimed in claim 1 in the form of steel cord.
Claim 8
Dependent Claim
20 words
A steel wire element as claimed in claim 1 wherein said adhesive coating has a thickness of 0.05 to 0.40μ.
Claim 9
Dependent Claim
20 words
A steel wire element as claimed in claim 7 wherein said adhesive coating has a thickness of 0.12 to 0.22μ.
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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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |