The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 1989
Filed:
May. 26, 1987
Masatoshi Kouda, Nagasaki, JP;
Hiroshi Takeshita, Nagasaki, JP;
Katsumi Yonekura, Nagasaki, JP;
Noboru Tohge, Nagasaki, JP;
Hiroyuki Hashimoto, Nagasaki, JP;
Shoji Fukushima, Nagasaki, JP;
Sadao Asanabe, Nagasaki, JP;
Kunio Saki, Nagasaki, JP;
Susumu Matsumoto, Nagasaki, JP;
Takao Sasajima, Nagasaki, JP;
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile