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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Apparatus and method for reducing fluid drag on a submerged surface

Invented by: Donald P. Stubblefield
Lake Oswego, OR

Jerry D. Stubblefield
Lake Oswego, OR

Originally Assigned to: North Shore Partners
Lake Oswego, OR
[Now assigned to . . .]

Issued:2007-09-11
Filed:2005-01-19
Application No:10905751
Examined by:Sotelo; Jesus D

An apparatus and method for reducing surface friction drag on the hull of a surface vessel by entraining air into water flowing in the boundary layer flow along the hull. The apparatus creates a reduced pressure region by diverting a first portion of the flow away from the surface of the hull. An air pocket is formed in the reduced pressure region and a second portion of the flow is directed through the air pocket by nozzles, which acts as a plunging jet and entrains air into the boundary layer.

[pdf] U.S. Pat. No. 7,267,067

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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