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Class Information
Number: 114/127
Name: Ships > Centerboards
Description: Vessels having boards, plates, planks, etc., placed longitudinally amidships and projecting in line with the keel or approximate thereto and adapted to be raised or lowered to increase the resistance-surface and prevent capsizing or sudden careening, thereby steadying and trimming the vessel, usually preventing making to leeward, and enabling a vessel to point or sail closer to the wind. Centerboards are usually short in length and move in a recess or casing formed in the bottom of the vessel and raised, lowered, or adjusted at will.










Sub-classes under this class:

Class Number Class Name Patents
114/129 Multiple 14
114/132 Pivoted 27
114/128 Steering 14
114/130 Vertical drop and pivoted swing 10
114/138 Vertical drop 23


Patents under this class:

Patent Number Title Of Patent Date Issued
7961068 Correlated magnetic breakaway device and method Jun. 14, 2011
7497752 Fin attachment system and method Mar. 3, 2009
7244157 High-lift, low drag fin for surfboard and other watercraft Jul. 17, 2007
7198532 Fin attachment system Apr. 3, 2007
6991504 Surfboard fin mounting system Jan. 31, 2006
6935910 Watersport board fin assembly and methods of using same Aug. 30, 2005
6916220 Removable fin system Jul. 12, 2005
6247985 Surfboard box cover Jun. 19, 2001
5839700 Articulated fin Nov. 24, 1998
5649846 Pivotable fin system Jul. 22, 1997
5503097 High performance centerboard system Apr. 2, 1996
5480331 Flexible surfboard fin Jan. 2, 1996
5385495 Self adjusting water ski assembly Jan. 31, 1995
5342231 Self adjusting water ski assembly Aug. 30, 1994
5224435 Fin box assemblies for windsurfers Jul. 6, 1993
5195915 Sealing lip of plastic for the lower end of the inlet opening for a dagger board housing and dagger board, particularly of sailboards Mar. 23, 1993
5181678 Flexible tailored elastic airfoil section Jan. 26, 1993
5176096 Assembly for fastening a fin to a sailboard Jan. 5, 1993
5133681 Frangible sailboard fin retaining member Jul. 28, 1992
5129344 Actuating mechanism Jul. 14, 1992
5036785 Lightning protection installation on a boat Aug. 6, 1991
5030151 Flanged fin for watercraft Jul. 9, 1991
5022337 Lift producing device exhibiting low drag and reduced ventilation potential and method for producing the same Jun. 11, 1991
4949919 Foil Aug. 21, 1990
4940438 Surfboard with angularly related fins Jul. 10, 1990
4936243 Transom rudder seat Jun. 26, 1990
4805546 Retractable water board fin Feb. 21, 1989
4766830 Boat, especially a catamaran, with large deck space and collapsible frame Aug. 30, 1988
4759308 Sealing lip assembly for surfboards and sailboats Jul. 26, 1988
4759552 Lip gasket of a synthetic resin, especially for the daggerboard well of a sailboard Jul. 26, 1988
4561371 Catamaran stabilization structure Dec. 31, 1985
4493665 Hydrofoil Jan. 15, 1985
4421492 Adjustable fin system Dec. 20, 1983
4377124 Sailboat with an inclinable keel board Mar. 22, 1983
4341176 Air foil with reversible camber Jul. 27, 1982
4325154 Surfboard fin Apr. 20, 1982
4280433 Underwater appendages for vessels Jul. 28, 1981
4263866 Ski boat Apr. 28, 1981
4037279 Water ski Jul. 26, 1977
4029037 Process for reinforcing plastic material and products therefrom Jun. 14, 1977











 
 
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