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US 6,273,161 B1Granted
Tire with single wire steel belt cord
AssigneeTokyo Rope Mfg. Co., Ltd.
InventorsAkio Yamagami, Makoto Nakayama, Ryouichi Shibata
Life of this patent
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AssigneeTokyo Rope Mfg. Co., Ltd.
InventorsAkio Yamagami, Makoto Nakayama, Ryouichi Shibata
Estimating the term…
A single wire steel cord is prepared by flattening a round wire to have two flat surfaces facing each other and two round surfaces interposed between the two flat surfaces to face each other, wherein a flattening ratio D/W of the wire, where D denotes the short diameter of the cross section of the flattened wire and W denotes the long diameter of the cross section of the flattened wire, falls within a range of 0.5 to 0.95. Forming is applied to the flattened wire in a direction of at least the short diameter of the cross section of the flattened wire, and the flattened single wire steel cord is embedded in a tire belt portion such that one flat surface of the cord faces that portion of the tire which is brought into contact with the ground.
A vehicle tire comprising a single wire steel cord prepared by flattening a round wire to have two flat surfaces and two round surfaces interposed between the two flat surfaces, the single wire steel cord being embedded in a tire belt portion such that one of the flat surfaces faces that portion of the tire which is brought into contact with the ground, wherein a flattening ration D/W of the wire, where D denotes the short diameter of the cross section of the flattened wire and W denotes the long diameter of the cross section of the flattened wire, falls within a range of 0.5 to 0.95, and forming is applied in a direction of at least the short diameter.
Dependencies are inferred from the claim text.