Yamaha Hatsudoki Kabushiki Kaisha

Atsushi Morie

Minoru Sato

Mitsuyoshi Nakamura

A jet propulsion device includes an impeller housing, an impeller, a sleeve, a first ring-shaped elastic body, and a second ring-shaped elastic body. The first ring-shaped elastic body is disposed between the impeller housing and the sleeve, and is located between a first end and a middle of the sleeve in an axial direction of the sleeve. The second ring-shaped elastic body is disposed between the impeller housing and the sleeve, and is located between a second end and the middle of the sleeve in the axial direction of the sleeve.

Growing community of inventors

Shizuoka, Japan

Atsushi Morie