US Patent 6926569 Fin with a blade having adjustable closed area
Patent 6926569 was granted and assigned to LG on August, 2005 by the United States Patent and Trademark Office.
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Patent abstract
A fin includes a blade, which is lengthwise split into a plurality of sub-blades, so that the sub-blades are separated from one another from an outer end of the blade to a near central point of the blade; and at least one zipper, which is located between two adjacent sub-blades and adapted to zip up for the adjacent sub-blades to provide a closed area. The closed area provided by the adjacent sub-blades is adjustable by zipping up the zipper by different length to thereby regulate a propulsive force that may be produced by the blade of the fin.
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Patent Inventor Names
Hsing-Chi Hsieh0
Date of Patent
August 9, 2005
0Patent Application Number
107774160
Date Filed
February 11, 2004
0Patent Primary Examiner
Golden AI
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US Patent 6926569 Fin with a blade having adjustable closed area
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