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US 9,951,469 B2Granted
Steel cord for rubber reinforcement
AssigneeNV Bekaert SA
InventorsGeert Seynhaeve, Stijn Himpe, Guy Buytaert
Life of this patent
Estimating the term…
Abstract
A steel cord with two or more filaments possibly including a wrapping filament, at least one but not all of the two or more filaments including the possible wrapping filament is coated with a ternary or quaternary alloy coating of copper-M-zinc. The steel cord with lower cost and good adhesion performance is for reinforcing rubber product.
Claims14
A steel cord comprising two or more filaments that come in contact with rubber after embedding the steel cord in rubber and filaments that do not come in contact with rubber after embedding the steel cord in rubber, wherein
- at least 50% but less than all of said filaments that come in contact with rubber after embedding the steel cord in rubber are coated with a ternary or quaternary alloy coating of copper-M-zinc,
- said M is one or two metals selected from the group consisting of cobalt, nickel, tin, indium, manganese, iron, bismuth and molybdenum,
- said copper has a content inside said ternary or quaternary alloy coating ranging from 58 weight percent to 75 weight percent,
- said M has a content inside said ternary or quaternary alloy coating ranging from 0.5 weight percent to 10 weight percent,
- a remainder of said ternary or quaternary alloy coating comprises zinc and unavoidable impurities, and
- a remainder of said filaments that are not coated with said ternary or quaternary alloy are coated with brass.
3 more elements
A steel cord comprising two or more filaments, wherein
- at least one but less than all of said two or more filaments is coated with a ternary or quaternary alloy coating of copper-M-zinc,
- said M is one or two metals selected from the group consisting of cobalt, nickel, tin, indium, manganese, iron, bismuth and molybdenum,
- said copper has a content inside said ternary or quaternary alloy coating ranging from 58 weight percent to 75 weight percent,
- said M has a content inside said ternary or quaternary alloy coating ranging from 0.5 weight percent to 10 weight percent,
- a remainder of said ternary or quaternary alloy coating comprises zinc and unavoidable impurities,
- a remainder of said filaments that are not coated with said ternary or quaternary alloy are coated with brass,
- said steel cord has a multi-layered structure comprising at least a core layer and an outer layer, said core layer comprises at least one filament and said outer layer comprises a plurality of filaments, at least 50% of said filaments in said core layer are coated with said ternary or quaternary alloy coating of copper-M-zinc, and
- all of said filaments in said core layer are coated with said ternary or quaternary alloy coating of copper-M-zinc.
5 more elements
A steel cord comprising two or more filaments, wherein
- at least one but less than all of said two or more filaments is coated with a ternary or quaternary alloy coating of copper-M-zinc,
- said M is one or two metals selected from the group consisting of cobalt, nickel, tin, indium, manganese, iron, bismuth and molybdenum,
- said copper has a content inside said ternary or quaternary alloy coating ranging from 58 weight percent to 75 weight percent,
- said M has a content inside said ternary or quaternary alloy coating ranging from 0.5 weight percent to 10 weight percent,
- a remainder of said ternary or quaternary alloy coating comprises zinc and unavoidable impurities,
- a remainder of said filaments that are not coated with said ternary or quaternary alloy are coated with brass,
- said steel cord has a multi-layered structure comprising at least a core layer and an outer layer, said core layer comprises at least one filament and said outer layer comprises a plurality of filaments, at least 50% of said filaments in said core layer are coated with said ternary or quaternary alloy coating of copper-M-zinc, and
- said core layer comprises more than one filament, a remainder of filaments that are not coated with said ternary or quaternary alloy in said core layer being alternated with filaments coated with said ternary or quaternary alloy coating of copper-M-zinc.
5 more elements
Dependencies are inferred from the claim text.