Sumitomo Rubber Industries Limited

Tetsuya Sakaguchi

Yuichi Ishigaki

Hiroshi Fujita

Koichi Nakajima

Yasuo Wada

At least one mark formed by a character or a figure and a surface geometry arrangement region disposed adjacent to the mark outside the mark can be formed on a surface of a sidewall portion of a tire. The surface geometry arrangement region can have a plurality of micro projections. The surface geometry arrangement region can include a first region formed in at least a part of the surface geometry arrangement region such that the greater a distance from the mark is, the less a height of the micro projection can be.

Tire

At least one mark in the form of a character or a figure and a surface geometry arrangement region can be disposed on a surface of a sidewall portion. The surface geometry arrangement region can include a first region formed adjacent to the mark outside the mark. The first region can have a plurality of first micro projections disposed therein. The first region can extend radially from a vanishing point on the surface of the sidewall portion toward the mark so as to allow the mark to be stereoscopically viewed.

A tire has an outer surface comprising a decorative portion which is visible and provided with micro-protuberances at a density of from 2 to 10 micro-protuberances per 1 sq.mm, and the micro-protuberances include a recessed micro-protuberance provided at its top surface with a recess.

A tire has a visible outer surface comprising a decorative region provided with a plurality of micro-protrusions each comprising a recess and a wall portion. The wall portion surrounds the recess to form a protrusion's apex having an upper surface, and the upper surface of the wall portion comprises at least two peak points in the protruding-height direction of the micro-protrusion, at which the protruding height of the wall portion becomes local maximum.

A tire has a visible outer surface comprising a decorative region provided with a plurality of micro-protrusions each comprising a recess and a wall portion. The wall portion surrounds the recess to form a protrusion's apex having an upper surface, and the upper surface of the wall portion comprises a peak point and a bottom point in a protruding-height direction of the micro-protrusion, wherein a protruding amount at the peak point is larger than a protruding amount at the bottom point.

A flat tire () according to the present invention includes a load support layer () positioned on an inside in an axial direction of a sidewall (). The tire () further includes a belt () constituted by an inner belt ply () and an outer belt ply (), and a full band () substantially covering a whole surface on an outside in a radial direction of the belt (). The full band () is formed by a cord and a topping rubber. When a tensile load of 50N is applied, the cord has an elongation of 3.0% or less. The tire () may include a center band which has a smaller width in the axial direction than the width of the full band () and is laminated on the full band () in the vicinity of an equator (CL).

Growing community of inventors

Kobe, Japan

Tetsuya Sakaguchi