Toyota Jidosha Kogyo Kabushiki Kaisha

Ishikawa Tekko Kabushiki Kaisha

Chikara Matsuoka

Yuichi Amano

Takayoshi Sunayama

Kouzi Sawada

A ball joint having an annular bearing member made of a plastic and mounted in an inner space of a socket and slidably embracing a head portion of a ball stud. A plurality of grooves are formed in the outer peripheral surface of said bearing member contacting the inner surface of said inner space of said socket so as to extend in the axial direction of said ball stud. A multiplicity of minute convexities and concavities are formed in the spherical inner surface of said bearing member facing said head portion of said ball stud.

Ball joint

An elastic eye-bush is provided for use in combination with the eyeend of an automobile leaf spring, etc. for absorption of radially applied shock loads. The bush has its intermediate portion diametrically reduced so as to provide a space between the eyeend and the intermediate portion, which portion is made up of co-centrically stratified layers of different hardness. The eye-bush offers an improved damping characteristic exhibiting a low spring constant under smaller loads and a high one under larger loads.

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Toyota, Japan

Chikara Matsuoka