Uni-sunstar B.v.

Sunstar Giken Kabushiki Kaisha

Other

Sunstar Engineering Pte. Ltd.

Norihiko Takamori

Wan Zhi Zhong

Fumihiko Metsugi

Akihito Ohata

Shunji Takeda

Jichu Oh

Akihito Yoshiie

A sprocket has a mounting part for mounting on a wheel and a corrugated section provided with teeth for engagement with a chain such that the sprocket has a reduces volume and weight and allows for appropriate engagement with the chain by having the position of the sprocket agree with the position of the chain. The mounting part has a first raised section raised toward a one plate surface side and a second raised section raised toward another plate surface side with respect to a longitudinally central plane extending through a center of the sprocket so as to divide the total volume and weight of the sprocket into substantially equal sections. A flat top part of the first raised section having a mounting hole is on a level with a bottommost end surface of the sprocket.

Sprocket

A sprocket includes a body, and teeth formed on the peripheral edge of the body. The teeth have a thickness greater than that of the body. This design enables the use of the existing chain and brings about a reduction in the weight of the overall sprocket.

Sprocket with thin body and grooved teeth

A sprocket,includes a wavy region,The wavy region is formed at least at the outer periphery of the sprocket and extends in an undulating fashion along the circumference of the sprocket. The wavy region has a plurality of convex joint portions,A plurality of teeth,are formed at the outer end of the convex joint portions.

A sprocket includes a body, and teeth formed on the peripheral edge of the body. The teeth have a thickness greater than that of the body. This design enables the use of an existing chain and brings about a reduction in the weight of the overall sprocket.

Growing community of inventors

Kyoto, Japan

Norihiko Takamori