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US4255496A
Expired / Lapsed
US
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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 15:53
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.
References Cited (Backward Citations)
US2240805A
Cited
US2296838A
Cited
US2643273A
Cited
US2870526A
Cited
US2939207A
Cited
US3311458A
Cited
US3517722A
Cited
FR2077770A1
Cited
US3749558A
Cited
US3858635A
Cited
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 |