Pneumatic tire

A technology of pneumatic tires and tires, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., can solve problems such as large cornering force and poor vehicle straight-forward performance.
CN1906047AInactive Publication Date: 2007-01-31BRIDGESTONE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BRIDGESTONE CORP
Publication Date
2007-01-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

There is provided a method of tire manufacturing a tire in which preset-beads each preformed by mounting a bead filler on a bead core are disposed radially outward of a carcass band and both side portions of the carcass band are turned around the preset beads to build the tire. The method eliminates a need to hold the considerable intermediate stocks and does not deteriorate the tire uniformity due to the unevenness of the preset bead in the circumference direction. There are also provided an apparatus of forming a preset bead used therefor and a system of forming a preset bead. In the method of manufacturing a tire in which preset-beads each preformed by mounting a bead filler on a bead core are disposed radially outward of a carcass band and both side portions of the carcass band are turned around the preset beads to build the tire, the preset bead is formed by winding and laminating a ribbon-shaped filler rubber 5 radially outward of the bead core 10 over several laps.
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Description

technical field

[0001] The present invention relates to a pneumatic tire having an asymmetrical tread pattern in which a plurality of circumferentially directional grooves extending substantially along the equatorial plane of the tire are provided on a tread portion, the orientation of which is specified relative to the vehicle when mounted on the vehicle The effective ground contact of the tread half area located on the outside of the vehicle when the tire is assembled on the specified rim, the tire is filled with the specified air pressure, and the mass corresponding to the maximum load capacity is applied to the tire. The area is greater than the effective ground contact area of ​​the tread half area located on the inside of the vehicle, wherein the tread half area is obtained by virtually dividing the tread portion into two parts at the equatorial plane of the tire. An object of the present invention is to suppress the cornering force of a tire so as to achieve a high leve...

Claims

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