Mitsubishi Jukogyo Kabushiki Kaisha

Masatoshi Kouda

Kunio Saki

Sadao Asanabe

Hiroshi Takeshita

Susumu Matsumoto

Takao Sasajima

Shoji Fukushima

Noboru Tohge

Katsumi Yonekura

Hiroyuki Hashimoto

A double reverse revolution propeller apparatus includes front and rear propeller wherein the rear propeller is rotated at higher speeds than the front propeller. When seizure occurs, an inner shaft is disconnected from an engine at an inner shaft connection unit and is connected to an outer shaft at an inner and outer shaft connection unit to be driven in the same direction as the outer shaft. The ratio of absorption horsepower of the front propeller to the rear propeller can to be substantially equal to the ratio of rotational speed of the front propeller to that of the rear propeller. One or both of the front and rear propeller can include a variable pitch propeller. The front propeller can have more blades than the rear propeller.

Double reverse revolution propeller apparatus

Growing community of inventors

Nagasaki, Japan

Masatoshi Kouda