Yonex Kabushiki Kaisha

Tohoku University

Takumi Sakaguchi

Yusuke Matsushima

Yasufumi Konishi

Shinichiro Chiba

An artificial shuttlecock feather for implanting in a circular ring shape into a shuttlecock base, including: a vane section and a rachis section having one end in an axial direction of the rachis section fixed to the base and supporting the vane section provided to another end side of the rachis section, a hole being formed in the vane section so as to penetrate the vane section, and a porosity of a first region of the vane section being lower than a porosity of a second region of the vane section, the first region spanning from an edge on the one end side in the axial direction to a predetermined position further toward the one end side than a center of vane section in the axial direction, the second region spanning from the predetermined position to an edge on the other end side in the axial direction.

Artificial shuttlecock feather and shuttlecock

An artificial shuttlecock feather for implanting in a circular ring shape into a base of a shuttlecock, the artificial feather includes: a vane section; and a rachis section supporting the vane section, the rachis section being formed from a material having a Charpy impact strength of 30 kJ/mor greater and a flexural modulus of 4 GPa or greater, and preferably having a Charpy impact strength of 36 kJ/mor greater and a flexural modulus of 4.7 GPa or greater.

Growing community of inventors

Tokyo, Japan

Takumi Sakaguchi