Koyo Seiko Company, Ltd.

Ken-ichiroh Aoto

Akihiko Shiina

Tetsuya Murakami

Masanori Kobayashi

Takeo Iino

Katsutoshi Nishimura

Masashi Uota

Hiroyuki Shigemura

Shoji Shibamura

Yoshio Itou

An electric power steering system is provided, which comprises a steering assist electric motor, and a reduction gear mechanism for reducing a rotation speed of a rotatable shaft of the electric motor. The reduction gear mechanism comprises a worm shaft driven by the rotatable shaft, and a worm wheel driven by the warm shaft. The electric power steering system further comprises a joint for coupling the rotatable shaft to the worm shaft for transmission of a driving force. Longitudinally biasing means is provided in association with the joint for longitudinally biasing the worm shaft.

Electric power steering system

Growing community of inventors

Kashiwara, Japan

Ken-ichiroh Aoto