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. 29, 2001
Filed:
Mar. 16, 2000
Kanji Kiyohara, Akashi, JP;
Mitsuhiro Yazaki, Kakogawa, JP;
Takehiro Nakashima, Akashi, JP;
Haruyoshi Maruyama, Kakogawa, JP;
Hisashi Fujii, Kobe, JP;
Takeshi Sugawara, Lincoln, NE (US);
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Abstract
A bottom structure of a personal watercraft enhances the running performance of a personal watercraft. A concavo-convex face (,) having very small concave or convex portions for drawing air from an outside of a watercraft is formed on a water contact face (S) in a bottom surface (,) of the personal watercraft during planing. The air is drawn by the concavo-convex face (,), thereby separating a water flow from the bottom surface (,). Consequently, frictional resistance to the water in the bottom surface (,) can be reduced.