Patents by Inventor Tatsuo Aire

Tatsuo Aire has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for opening, closing and rotating rigid marine sail
    Patent number: 4448144
    Abstract: A method for opening, closing and rotating a rigid marine sail, which comprises the steps of: selectively opening, closing and rotating, in response to a wind velocity and a wind direction, a rigid sail comprising at least two sail portions which are fitted in front of a mast rotatable around the vertical axis thereof substantially in parallel with said axis, and which are selectively pivotably movable between the opened position and the closed position relative to the mast: the method being characterized by: smoothing a plurality of wind velocity signals and a plurality of wind direction signals from a wind velocity/wind direction meter, by a calculating device at prescribed intervals of time; determining opening and closing of the at least two sail portions by the calculating device on the basis of smoothed wind velocity signals and smoothed wind direction signals; automatically selectively opening or closing the at least two sail portions by an opening/closing device in response to the determination; deter
    Type: Grant
    Filed: July 7, 1981
    Date of Patent: May 15, 1984
    Assignees: Japan Marine Machinery Development Association, Aitoku Company Limited, Nippon Kokan Kabushiki Kaisha
    Inventors: Akira Senoo, Yuzo Nezu, Masanori Ito, Hironobu Nagano, Tatsuo Aire