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Browse by Category: Main > Transportation & Automotive
Class Information
Number: 114/291
Name: Ships > Hull or hull adjunct employing fluid dynamic forces to derive a lift or alter trim, (e.g., planing hulls, etc.) > Stepped hull
Description: Device wherein the hull is made from a plurality of vertically spaced segments which are connected one to the other by a generally perpendicular stop or wall portion.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8622013 Sailboard step design with less ventilation and increased speed Jan. 7, 2014
8480444 Rotary engine jet boat Jul. 9, 2013
8240268 Watercraft with stepped hull and outboard fins Aug. 14, 2012
8210116 Watercraft with hull ventilation Jul. 3, 2012
8201513 Ventilated step boat hull with tunnel and movable member positioned therein Jun. 19, 2012
8135504 Navigational planning and display method for the sailor's dilemma when heading upwind Mar. 13, 2012
7997225 Boat hull with channel forming member and method of manufacture Aug. 16, 2011
7992507 Forced air cavity and control system for watercraft Aug. 9, 2011
7845301 Ventilated aft swept flow interrupter hull Dec. 7, 2010
7845302 Ventilated flow interrupter stepped hull Dec. 7, 2010
7814853 Forced air cavity and control system for watercraft Oct. 19, 2010
7677192 Slot-V hull system Mar. 16, 2010
7597061 Boat hull with channel forming member and method of manufacture Oct. 6, 2009
7549385 Stepped boat hull with flat pad portions Jun. 23, 2009
7540252 Autostabilizer device for boat hull Jun. 2, 2009
7497179 Quadrapod air assisted catamaran boat or vessel Mar. 3, 2009
7475853 Method and system for regulating external fluid flow over an object's surface, and particularly a wing and diffuser Jan. 13, 2009
7299764 Boat hull Nov. 27, 2007
7201111 Boat hulls with planing sections Apr. 10, 2007
7093553 Super high speed multi-hull watercraft Aug. 22, 2006
6983713 Powered watercraft Jan. 10, 2006
6925953 Levitation and stabilizing hull system Aug. 9, 2005
6923137 Water sports performance boat hull Aug. 2, 2005
6868798 Powered watercraft Mar. 22, 2005
6837176 Vessel transition hull Jan. 4, 2005
6782839 Hydrofoil boat Aug. 31, 2004
6708642 Tri-sponson boat hull and method of making boat hulls Mar. 23, 2004
6675736 Boat having channels formed in its hull Jan. 13, 2004
6666160 High aspect dynamic lift boat hull Dec. 23, 2003
6634309 Device for reducing the resistance to the advancement of a motorboat on water Oct. 21, 2003
6609472 Stable efficient air lubricated ship Aug. 26, 2003
6604478 Hull configuration utilizing multiple effects for enhanced speed, range and efficiency Aug. 12, 2003
6575106 Air induction system for marine vessel Jun. 10, 2003
6425341 Boat hull Jul. 30, 2002
6422168 Sporting water vehicle Jul. 23, 2002
6415731 Method of controlling the attitude of a boat at high speed through boat hull design and a boat hull Jul. 9, 2002
6363877 Power boat Apr. 2, 2002
6332422 Hull modification to minimize porpoising of a boat Dec. 25, 2001
6260503 Channeled air planing apparatus Jul. 17, 2001
6250246 Boat hull system Jun. 26, 2001
6213824 Method for reducing vessel draft Apr. 10, 2001
6176196 Boat bottom hull design Jan. 23, 2001
6138602 Catamaran--V boat hull Oct. 31, 2000
RE36879 Planing boat hull Sep. 26, 2000
6058873 Hull construction for small watercraft May. 9, 2000
6000357 Boat planing tabs Dec. 14, 1999
5819677 Hull with laminar flow interrupters Oct. 13, 1998
5685253 Reduced drag stable Vee bottom planing boat Nov. 11, 1997
5588389 Dual lift boat hull Dec. 31, 1996
5540174 Trim adjusting system for jet propulsion boat Jul. 30, 1996

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