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. 26, 2013
Filed:
Feb. 18, 2009
Shinichi Takano, Nagasaki, JP;
Shuji Mizokami, Tokyo, JP;
Seijiro Higasa, Nagasaki, JP;
Chiharu Kawakita, Nagasaki, JP;
Shinichi Takano, Nagasaki, JP;
Shuji Mizokami, Tokyo, JP;
Seijiro Higasa, Nagasaki, JP;
Chiharu Kawakita, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A ship-body frictional resistance reducing device for reducing frictional resistance of a sailing ship body by forming an air bubble curtain on a ship's bottom by generating air bubbles includes an air chamber provided on the ship's bottom inside the ship including an air supply port formed thereon, a plurality of air ejection holes formed in an array on the ship's bottom that serves as a bottom of the air chamber, and a diffusion plate provided inside the air chamber intervening between the air supply port and the air ejection holes. The diffusion plate is formed in a manner that it includes at least a supply-port facing area covering the air supply port and a pair of ejection-hole facing areas covering air ejection holes located at both edges of the air ejection holes in an arrangement direction.