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US 5,205,883 AGranted
Pneumatic tire with polygonal bead core
AssigneeThe Yokohama Rubber Co., Ltd.
InventorMasahiko Kanamaru
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AssigneeThe Yokohama Rubber Co., Ltd.
InventorMasahiko Kanamaru
Estimating the term…
A pneumatic radial tire having a circular bead core of substantially polygonal cross section which includes a base (a) adjacent an inclined bead base portion of the tire, an inner side (b) on a side of the bead core nearest a bead toe portion of the tire, an outer side (d) on a side of the bead core nearest a bead heel portion of the tire, and a top side (c) opposite the base (a) and joining the inner side (b) and the outer side (d). An inclination .theta..sub.1 of the base (a) relative to the axial direction of the tire is substantially the same as that of the bead base portion relative to the axial direction of the tire. A cross angle .beta. between the base (a) and the inner side (b) is 70.degree. to 90.degree.. An inclination .theta..sub.2 of the top side (c) relative to the axial direction of the tire is smaller than the inclination .theta..sub.1 and the direction of inclination of the top side (c) is opposite to that of the base (a).
A pneumatic radial tire having a circular bead core, wherein said bead core has substantially a polygonal cross section comprising a base (a) adjacent an inclined bead base portion of said tire, an inner side (b) on a side of said bead core nearest a bead toe portion of said tire, an outer side (d) on a side of said bead core nearest a bead heel portion of said tire, and a top side (c) opposite said base (a) and joining said inner side (b) and said outer side (d), an inclination .theta..sub.1 of said base (a) relative to the axial direction of the tire is substantially the same as that of said bead base portion relative to the axial direction of the tire, a cross angle .beta. between said base (a) and said inner side (b) is 70.degree. to 90.degree., an inclination .theta..sub.2 of said top side (c) relative to the axial direction of the tire is smaller than said inclination .theta..sub.1 and the direction of inclination of said top side (c) is opposite to that of said base (a).
Dependencies are inferred from the claim text.