Toyoda Gosei Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Zeon Corporation

Fumio Ikeda

Satoshi Mizutani

Makoto Kanai

Atsushi Suzuki

Kiyomitsu Terashima

Hideyuki Fujiwara

Takashi Mizushima

Nobuaki Funahashi

Nobuyoshi Emori

Kiyoshi Hanai

Tatsuya Terayama

Keiichi Kodama

Kanji Ishii

Norio Oomori

Ryuichi Horiba

Takahiro Iwata

Yoshiyuki Odagawa

Katsushi Kitaoka

A rubber composition includes &#x3b1;,&#x3b2;-ethylenically unsaturated nitrile-conjugated diene copolymer rubber (A), &#x3b1;,&#x3b2;-ethylenically unsaturated nitrile-conjugated diene copolymer rubber (B), ethylene-&#x3b1;-olefin copolymer rubber (C), and a graft copolymer (D). The graft copolymer (D) is obtained by performing graft copolymerization on a mixture of an aromatic vinyl compound and an &#x3b1;,&#x3b2;-ethylenically unsaturated nitrite monomer with an ethylene-propylene-unconjugated copolymer. A content of structure units of the ethylene-propylene-unconjugated copolymer is 20 to 70 wt %, a ratio of the graft copolymer (D) with respect to 100 parts by weight in total of said rubber (A), rubber (B) and rubber (C) is 1 to 30 parts by weight. A composition ratio of the rubber (A), rubber (B) and rubber (C) is rubber (A): 20 to 79 wt %, rubber (B): 1 to 30 wt %, and rubber (C): 20 to 50 wt %.

Rubber composition, vulcanizate, and air intake hose

A tester for measuring a durability of a knitted yarn portion in which at least two sets of yarns, including a set of first yarns and a set of second yarns, are intersected, the tester includes: a first holding unit holding ends of the two sets of yarns at first positions that are relative to the knitted yarn portion; a second holding unit holding opposite ends of the two sets of yarns at second positions that are relative to the knitted yarn portion; and a position adjusting unit, connected to the first holding unit and the second holding unit, allowing at least one of the first positions and the second positions, relative to the knitted yarn portion, to be moved to other positions, thus varying an intersecting angle of the yarns of the knitted yarn portion.

Knitted yarns durability tester with vibration unit

A reinforced hose includes an inner tubular rubber layer, a cover layer made of rubber, and at least two reinforcing thread layers, including an upper thread layer and a lower thread layer, disposed between the inner tubular rubber layer and the cover layer. At least the lower thread layer includes a polyester thread having the following physical properties: a tensile strength of 8 grams or more per a unit denier, an elongation of 10.+-.1.5%, and a loaded elongation of 2.7.+-.1.0% per a unit denier under 3-gram load. With this construction, the reinforced hose satisfies the fatigue resistance and volume expansion requirements simultaneously.

Layered rubber hose with reinforcing

A reinforced rubber hose having a layer of ethylene-propylene rubber outside or inside a fiber-reinforcing layer. The two layers are firmly bonded to each other by an extruded adhesive layer of butyl rubber which exhibits a high bond strength after vulcanization. This obviates the necessity of treating (usually by dipping) the fibrous reinforcement with an adhesive before its braiding or knitting.

Reinforced rubber hose

Disclosed is a hose unit including harnesses which can be easily attached to and detached from the other portion of the unit at the time of fastening thereof to the body of a motor vehicle or the like and which hardly undergoes stress even at the time of vibration or torsion of the hose of the unit. The hose unit includes the hose to which respective end metal members are secured. Holders are removably fastened to these members. One harness extends along the hose and is fastened to the holders and another harness is connected to the former through the holders and extends therefrom. Also disclosed is a special hose clamp.

Hose device

Growing community of inventors

Tokyo, Japan

Fumio Ikeda