Steel cord comprising flat wires

US9109328B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9109328-B2
Application numberUS-201214124921-A
CountryUS
Kind codeB2
Filing dateMay 3, 2012
Priority dateJun 10, 2011
Publication dateAug 18, 2015
Grant dateAug 18, 2015

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  2. Abstract

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  5. First independent claim

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Abstract

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A steel cord ( 20 ) comprises a plurality of steel filaments ( 22, 24 ) arranged in parallel to the longitudinal axis of the steel cord ( 20 ) without twisting. The steel cord ( 20 ) further comprises a wrapping filament ( 26 ) twisted around the steel cord ( 20 ). Each of said steel filaments ( 22, 24 ) is a flat wire having flat surfaces. The steel filament ( 24 ) near the center of the steel cord ( 20 ) has a bigger width than the steel filaments ( 22 ) further away from the center of the steel cord ( 20 ) such that the cross-section of said steel cord ( 20 ) approximates an oval shape with the bending stiffness around the shorter axis of the oval shape being greater than the bending stiffness around the longer axis. In a tire, the steel cord being used as a reinforcement, the longer axis being arranged perpendicular to the radial direction of the tire.

First claim

Opening claim text (preview).

The invention claimed is: 1. A steel cord comprising a plurality of steel filaments arranged in parallel without twisting, said steel cord further comprising a wrapping filament twisted around said steel filaments, said plurality of steel filaments being flat wires having flat surfaces, said plurality of steel filaments being in contact with each other along said flat surfaces, the lateral bending stiffness (in a horizontal plane) is greater than the radial bending stiffness (in a…

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What does patent US9109328B2 cover?
A steel cord ( 20 ) comprises a plurality of steel filaments ( 22, 24 ) arranged in parallel to the longitudinal axis of the steel cord ( 20 ) without twisting. The steel cord ( 20 ) further comprises a wrapping filament ( 26 ) twisted around the steel cord ( 20 ). Each of said steel filaments ( 22, 24 ) is a flat wire having flat surfaces. The steel filament ( 24 ) near the center of the steel…
Who is the assignee on this patent?
Wang Pengfei, Cheng Zhichao, Chen Jiankao, and 2 more
What technology area does this patent fall under?
Primary CPC classification D07B1/062. Mapped technology areas include Textiles & Paper.
When was this patent published?
Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).