Asahi Organic Chemicals Industry Co., Ltd.

Honda Motor Co., Ltd.

Jtekt Corporation

Toshihiko Kaneiwa

Hirokazu Arai

Takanori Kurokawa

Kentaro Komori

Satoshi Yoshida

Atsushi Takahashi

Masamitsu Ohtsubo

A carbon fiber composite material () is provided which includes carbon fibers (), a matrix () binding the carbon fibers () together, and pores (), and a volume fraction of the carbon fibers () exclusive of the pores () is not less than 45% and up to 80%. The carbon fiber composite material () may preferably have a porous structure of which a porosity is not more than 20% and up to 70%. This carbon fiber composite material () has a high static friction coefficient (&#x3bc;S), and low &#x3bc; ratio, and thus is suitable for a wet friction member (e.g., carbon disc) which is excellent in both of static friction performance and dynamic friction performance.

Wet friction member

A resin gear for an electric power steering apparatus is provided which offers excellent mechanical strength and durability, and in which damage of teeth, does not occur even when the gear is employed in an electric power steering apparatus equipped with a high-power electric actuator. The resin gear for an electric power steering apparatus includes a worm wheel, and a gear portion thereof is formed of a resin molding material containing a thermosetting resin and polyparaphenylene-benzobisoxazole fibers (PBO fibers) as essential constituents.

Resin gear for electric power steering apparatus and electric power steering apparatus equipped with the same

Growing community of inventors

Aichi, Japan

Toshihiko Kaneiwa