Sumitomo Rubber Industries Limited

Health Wellness Foods Corporation

Takuya Sato

Naoki Yukawa

Shinji Murosaki

Toshiaki Suzuki

Koutarou Muroyama

Yoshihiro Yamamoto

Yoshitaka Hirose

Hiroyuki Nakayama

Norio Yamamoto

Dai Kurosawa

Sho Matsunami

A pneumatic tire is provided with a noise damper made of a sponge material attached to a radially inner surface of the tread portion. The noise damper has protruding portions protruding from a radially inner surface of a band-shaped base portion. The protruding portions extend from one edge to the other edge of the base portion in the widthwise direction, and arranged at intervals in the tire circumferential direction. In a cross section of the tire parallel with the tire equatorial plane, the radially inner surface of each of the protruding portions includes a flat portion, and the radially inner surface of the base portion includes an arc portion parallel with the inner surface of the tread portion.

Pneumatic tire with noise damper

Each shoulder land regionE defined by a shoulder circumferential main grooveE is provided with a circumferential narrow grooveand axially inner and outer shoulder oblique groovesandextending therefrom. The axially outer shoulder oblique groovesare inclined with respect to the tire axial direction to one direction. The axially inner shoulder oblique groovesare inclined with respect to the tire axial direction to one direction opposite to that of the axially outer shoulder oblique grooves. Crown oblique groovesare inclined with respect to the tire axial direction to one direction same as that of the axially outer shoulder oblique grooves. Imaginary extensionsK of the axially outer shoulder oblique groovesare not overlapped with openings Qof the axially inner shoulder oblique groovesat the circumferential narrow groove. Imaginary extensionsK of the axially inner shoulder oblique groovesare not overlapped with openings Qof the crown oblique groovesat the shoulder circumferential main grooveE, and are not overlapped with openings Qof the axially outer shoulder oblique groovesat the circumferential narrow groove. Imaginary extensionsK of the crown oblique groovesare not overlapped with openings Qof the axially inner shoulder oblique groovesat the shoulder circumferential main grooveE.

Pneumatic tire having a zigzag center main groove and shoulder oblique grooves

A pneumatic tire comprises a tread portion provided on each side of the tire equator with a middle land portion defined between a shoulder main groove and a crown main groove each extending continuously in the tire circumferential direction. The middle land portion is provided with axially inside middle lug grooves and axially outside middle lug grooves arranged alternately in the tire circumferential direction. The axially inside middle lug groove is connected to the crown main groove at an angle &#x3b8;1 of from 20 to 45 degrees with respect to the tire circumferential direction and has an axially inner opened end and an axially outer closed end. The outside middle lug grooves is connected to the shoulder main groove at an angle &#x3b8;2 of from 60 to 80 degrees with respect to the tire circumferential direction and has an axially outer open end and an axially inner closed end. The tread portion may be provided with a shoulder land portion comprising circumferential sipes, axial grooves terminating at the circumferential sipes, and a circumferentially continuous rib.

Pneumatic tire

The present invention relates to an antistress agent comprising as an active ingredient a saccharide containing 3-O-&#x3b1;-D-glucopyranosyl-D-glucose as a structural unit. It is an object of the present invention to provide said antistress agent which is free from side effects as a medicine, and can be taken habitually and also can be ingested simply as a food or a beverage, or the like.

Antistress agent

Growing community of inventors

Kobe, Japan

Takuya Sato