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Patent 6151726
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Document Number
US Patent 6151726
Issued Date
November 28, 2000
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Abstract
A swimming pool includes a swimming tank, which stores water for swimming; and an upstream tank, which stores water to be supplied into the swimming tank. The pool further includes a downstream tank, which stores the water streamed from the upstream tank through the swimming tank; and a pump, which forces the water stored in the downstream tank to the upstream tank. The water in the upstream tank has an energy head that is higher than the water in the swimming tank so as to generate water current in the swimming tank.
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Swimming pool - US Patent 6151726 Drawing
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Number of Claims:
17
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Owner
Rika Kogyo, Inc. (Fukushima,JP)
Published
November 28, 2000
Application Number
09/294,496
Filed
April 20, 1999
US Classification
4/488   4/507 4/509 4/512 4/904
Int'l Classification
E04H   4/00   (20060101)  
Attorney/Law Firm
Priority Data
Apr 22, 1998 [JP] 10-111858
USPTO Field of Search
4/488   4/491   4/492   4/507   4/509   4/511   4/512   4/541.1   4/541.3   4/904  
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