Stepped boat hull with flat pad portions

Details Stepped boat hull with flat pad portions Stepped boat hull with flat pad portions

2007-08-17

2009-06-23

Sotelo, Jesus D (Department: 3617)

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Stepped hull

C114S271000

Reexamination Certificate

active

07549385

ABSTRACT:
The boat hull includes a bow, a stern and a bottom surface which extends from the bow to the stern. The hull includes a bottom surface with a deep-V shaped portion extending from the bow to a hull point which is aft of the mid-point of the bottom surface, approximately two-thirds thereof. At least two steps, referred to as flat steps, are included in the bottom surface of the boat, between the hull point and the stern. The steps extend across a portion of the bottom surface. Flat pads extend from each step to the next step or to the rear of the stern. A decrease in the size of the entire hull, referred to as a hull step, occurs at the second or third step in the bottom surface of the boat.

REFERENCES:
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patent: 3661109 (1972-05-01), Weiland
patent: 4027613 (1977-06-01), Wollard
patent: 4233920 (1980-11-01), Wood et al.
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patent: 5140930 (1992-08-01), Lund
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patent: 6000357 (1999-12-01), Allison
patent: 6260503 (2001-07-01), Allison
patent: 6415731 (2002-07-01), Chrunyk
patent: 6425341 (2002-07-01), Devin
patent: 6925953 (2005-08-01), Batista et al.
patent: 2001/0047747 (2001-12-01), Allison
patent: 2005/0016435 (2005-01-01), Robinson et al.

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