B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
115/23
B63H 5/10 (2006.01)
Patent
CA 1288643
Abstract of the Disclosure A double reverse revolution propeller apparatus having a front and a rear propeller is disclosed in which the rear propeller is rotated at higher speeds than the front propeller. In another aspect, when seizure occurs, an inner shaft is disconnected from an engine at an inner shaft connection unit and connected to an outer shaft at an inner and outer shaft connection unit to be driven in the same direction as the outer shaft. In still another aspect, the ratio in absorption horsepower of the front propeller to the rear propeller is set to be substantially equal to the ratio in rotational speed of the front propeller to the rear propeller. In a further aspect, one or both of the front and rear propellers include a variable pitch propeller. In a still further aspect, the front propeller has more blades than the rear propeller.
537801
Asanabe Sadao
Chiba Noritane
Fukushima Shoji
Hashimoto Hiroyuki
Kouda Masatoshi
Mitsubishi Jukogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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