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:
Mar. 19, 1985
Filed:
Apr. 29, 1983
Yoichi Endo, Yokohama, JP;
Kazuo Nakanishi, Tokyo, JP;
Hideki Namura, Yokohama, JP;
Terukazu Doi, Yokohama, JP;
Katsunori Kusumoto, Yokosuka, JP;
Kazuyuki Shimizu, Fujisawa, JP;
Kazuhiko Yoshimi, Tokyo, JP;
Shigeru Nagai, Yokohama, JP;
Shoichi Sato, Yokohama, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Abstract
A rigid marine sail comprises a vertical mast secured onto a deck of a ship; at least one pivot shaft provided substantially in parallel with the mast; a left sail portion and a right sail portion pivotally secured respectively to the left side and the right side of the mast in parallel therewith through the at least one pivot shaft; and at least one drive mechanism for symmetrically pivoting the left sail portion and the right sail portion relative to the mast around the pivot shaft between a deployed position and a folded position. Each of the drive mechanisms include a set of a cylinder and a piston rod secured horizontally to the mast; a pair of L-shaped first levers, each of the first levers horizontally engaging at an end thereof with an end of the piston rod, the pair of first levers being bilaterally arranged symmetrically relative to a vertical plane which passes through the vertical axis of the mast and is parallel to the longitudinal direction of the ship, the pair of first levers being symmetrically pivotable around respective fulcrums thereof; and a pair of second levers, each of the second levers horizontally engaging at an end thereof with the other end of each of the pair of first levers, and the pair of second levers engaging at the other ends thereof respectively with the left sail portion and the right sail portion.