Sumitomo Rubber Industries Limited

Asics Corporation

Shingo Takahashi

Satoshi Tsuda

Genki Hatano

Norihiko Taniguchi

Kenta Tateno

Waka Inoue

Masaki Oohara

A footwear includes: a foot bed portion that supports a sole of a foot of a wearer and has a ground contact surface; and a foot cover portion that covers an instep of the foot of the wearer. At least a part of the foot bed portion and at least a part of the foot cover portion are formed of a single additively manufactured product produced by a stereolithography-type three-dimensional additively manufacturing method, and a protruding portion is provided on an outer surface defined by the additively manufactured product of the foot cover portion.

Footwear and method of manufacturing the same

Footwear

A tire vulcanization mold comprises a ring shaped tread mold which comprises a plurality of segments, each segment with a radially inner face and a pair of end faces each of which extends from a circumferential end of the inner face toward radially outwardly of the tire, the segments arranged in a circumferential direction of the tire to have a substantially continuous tread molding face by connecting inner faces one another, each inner face of segments comprising a circumferentially extending rib, a laterally extending rib, and blades for molding sipes, the blades including three dimensional blades which comprises a first blade with a thickness not more than 0.3 mm and a second blade with a thickness of from 0.4 to 0.6 mm arranged in one of the circumferentially end regions.

Tire vulcanization mold and method for manufacturing tire

A pneumatic tire with a specified rotational direction includes a tread portion provided with a pair of circumferentially extending crown main grooves disposed on both sides of the tire equator, a plurality of inclined lateral grooves each extending axially outside of the tire from each crown main groove to each tread edge toward the anti-rotational direction to separate a plurality of shoulder blocks between crown main grooves and tread edges, and a sipe, inclined lateral grooves with inclinations of 45-85 degrees with respect to the tire circumferential direction, each shoulder block with a heel-side edge and a toe-side edge which comes into contact with a road later than the heel-side edge in the specified rotational direction, in a planer view, the heel-side edge smoothly extending in a curved manner from a first end intersecting a groove wall of the crown main groove to a second end intersecting the tread edge.

Pneumatic tire

It aims to provide a heavy duty pneumatic tire with block patterns and capable of improving deflected wear resisting performances without sacrificing wet grip performances or on-snow performances and that can particularly be favorably used for all seasons. The present invention comprises block patterns employing at least three types of blockscomprised of central blocksC delimited by the central longitudinal grooveM, the intermediate longitudinal groovesM, and the central lateral groovesC, intermediate blocksM delimited by the intermediate longitudinal groovesM, the outer longitudinal groovesS and the intermediate lateral groovesM, and outer blocksS that are delimited by outer longitudinal groovesS, outer lateral groovesS that extend from this outer longitudinal groovesS to the tread ends E, and wherein longitudinal length ratios (L/W) of blocks, groove width ratios of longitudinal grooves and lateral grooves (w/w), maximum widths of blocks, minimum widths of blocks and ratios thereof (Wmax/Wmin), and circumferential edge components and tire axial edge components and ratios thereof (EC/EL) at respective stages of wear are defined to be within specified ranges.

Heavy duty pneumatic tire

A pneumatic tire is provided in the tread portion () with a circumferential groove () extending continuously in the tire circumferential direction and having a pair of oppositely opposed groove walls (). The circumferential groove () is provided in at least one of the groove walls () with radial grooves () arranged along the longitudinal direction of the circumferential groove (). The radially outer end () of the radial groove () is positioned in a range () of from 0 to 20% of the depth (GDt) of the circumferential groove. The radially inner end () of the radial groove () is positioned in a range () of from 80 to 100% of the depth (GDt) of the circumferential groove. The radial groove has an opening width (g) of not less than 1.0 mm, but not more than 6.0 mm.

Pneumatic tire with tread having radial grooves and shutoff walls

Tire for automobile

A heavy duty tire is vulcanized in a segmented mold having a tread molding surface defined by circumferentially arranged segments. The tread portion is molded by the tread molding surface during vulcanization of the tire, wherein the stretch of the belt layer in the tire radial direction during vulcanization is in a range of from 3.2 to 5.2%. the tread portion is provided with an axially outermost circumferential groove at an axial distance from the tire equator which distance is in a range of from 50% to 68% of one half of the tread width. The footprint shape satisfies the following conditions: (1) 1.05=&#x3c;SL/SL=&#x3c;1.18; and (2) 0.95=&#x3c;SL/SL=&#x3c;1.05, wherein SL, SLand SLare the circumferential lengths of the footprint shape measured at axial distances of 0%, 70% and 97%, respectively, of one half of the tread width from the tire equator.

Heavy duty tire

A heavy-duty tire having a tread portion improved in the shoulder wear is disclosed. Under the maximum load condition[W100], the tread portion has a ground contacting face G[W100] having circumferential lengths L97[W100] and L70[W100] at specific axial positions. Under the 70% load condition[W70], the tread portion has a ground contacting face G[W70] having lengths L97[W70] and L70[W70] at specific axial positions. The lengths L70[W100], L97[W100], L70[W70] and L97[W70] satisfy specific conditions: 0.95&#x3c;L70[W100]/L97[W100]&#x3c;1.05; and 1.03&#x3c;L70[W70]/L97[W70]&#x3c;1.20.

Heavy duty tire having ground contacting face at 70% and 100% maximum tire load

It aims to provide a heavy duty pneumatic tire with block patterns and capable of improving deflected wear resisting performances without sacrificing wet grip performances or on-snow performances and that can particularly be favorably used for all seasons. The present invention comprises block patterns employing at least three types of blockscomprised of central blocksC delimited by the central longitudinal grooveM, the intermediate longitudinal groovesM, and the central lateral groovesC, intermediate blocksM delimited by the intermediate longitudinal groovesM, the outer longitudinal groovesS and the intermediate lateral groovesM, and outer blocksS that are delimited by outer longitudinal groovesS, outer lateral groovesS that extend from this outer longitudinal groovesS to the tread ends E, and wherein longitudinal length ratios (L/W) of blocks, groove width ratios of longitudinal grooves and lateral grooves (w/w), maximum widths of blocks, minimum widths of blocks and ratios thereof (W4max/W4min), and circumferential edge components and tire axial edge components and ratios thereof (EC/EL) at respective stages of wear are defined to be within specified ranges.

Growing community of inventors

Kobe, Japan

Shingo Takahashi