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:
Nov. 19, 1996
Filed:
Dec. 21, 1994
Hiroharu Kato, Koganehara, Matsudo-shi, Chiba-ken, JP;
Yoshiaki Takahashi, Tokyo, JP;
Other;
Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo, JP;
Abstract
A method for reducing the frictional resistance of a navigating vehicle, and a method for generating micro-bubbles for reducing the friction of the navigating vehicle and an apparatus therefor. The friction reduction is achieved with the expenditure of a small amount of energy, thereby improving the overall energy efficiency for operating the ship. An air bubble/water mixture is injected towards the stern of the ship, at an inclined angle to the underwater surface, into a boundary layer formed in the vicinity of the underwater surface of the ship. The friction reduction is effectively performed because of the dynamic energy of the water, being a larger mass than air, enables the gas-including mixture to be injected over a longer distance into the boundary layer than in the case of air bubbles alone.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile