US2015274266A1PendingUtilityA1

High-performance planing monohull sailboat with heeling control

31
Individually held — no corporate assignee on recordPriority: Mar 28, 2014Filed: Mar 28, 2014Published: Oct 1, 2015
Est. expiryMar 28, 2034(~7.6 yrs left)· nominal 20-yr term from priority
Inventors:Jason H. Eveleth
B63B 1/242B63H 9/04B63B 1/26B63B 39/06B63B 1/30
31
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A sailboat which uses hydrofoils either immersed or planning on the water's surface to resist heeling. The boat uses two hydrofoil assemblies, one for the starboard side of the boat and one for its port side. Each part can generate either positive or negative lift. The attack angles and depths of immersion of each hydrofoil are adjustable. The struts which hold the hydrofoils are designed so that the leeway forces produced by the struts are much lower than the lifts produced by the hydrofoils so there is little or no conflict between the hydrodynamic force produced by the hydrofoil and its supporting strut.

Claims

exact text as granted — not AI-modified
1 . A sailboat, comprising:
 a. a hull,   b. at least two hydrofoil apparatuses, one or more on the starboard side of the hull and one or more on the port side of the hull,   c. wherein each hydrofoil apparatus is configured to adjustably hold a hydrofoil assembly,   d. wherein each hydrofoil assembly comprises a strut and a hydrofoil,   e. the strut and the hydrofoil each having an area intended to contact water,   f. wherein the leeway force produced by the strut is small in comparison to the lifting force of hydrofoil, and   g. the hydrofoils are outwardly canted with respect to the hull.   
     
     
         2 . The sailboat of  claim 1 , wherein each hydrofoil apparatus is configured to adjustably hold a hydrofoil assembly in at least two positions. 
     
     
         3 . The sailboat of  claim 1 , wherein each strut is oriented vertically and each hydrofoil is oriented horizontally. 
     
     
         4 . The sailboat of  claim 1 , wherein each strut is oriented approximately vertically and each hydrofoil is oriented approximately horizontally. 
     
     
         5 . The sailboat of  claim 2 , wherein each of the outwardly canted hydrofoils can be positioned to plane on the surface of the water. 
     
     
         6 . The sailboat of  claim 2 , wherein each of the outwardly canted hydrofoils can be positioned to be immersed in the water. 
     
     
         7 . The sailboat of  claim 5 , wherein each of the outwardly canted hydrofoils can be positioned to be immersed in the water. 
     
     
         8 . The sailboat of  claim 1 , where the hydrofoil apparatuses are configured to resist heeling of the sailboat. 
     
     
         9 . The sailboat of  claim 2 , wherein the hydrofoil apparatus are configured to adjustably hold the hydrofoils in a positive lift position. 
     
     
         10 . The sailboat of  claim 2 , wherein the hydrofoil apparatus are configured to adjustably hold the hydrofoils in a negative lift position. 
     
     
         11 . The sailboat of  claim 9 , wherein the hydrofoil apparatus are configured to adjustably hold the hydrofoils in a negative lift position. 
     
     
         12 . The sailboat of  claim 2 , wherein each hydrofoil apparatus is configured to adjustably hold the hydrofoils in at least two vertical positions. 
     
     
         13 . The sailboat of  claim 1 , wherein the struts have an area contacting the water that is much less than that of the area of the hydrofoils contacting the water so that the struts do not generate hydrodynamic forces which conflict with the lifting forces of the hydrofoils during operation of the sailboat. 
     
     
         14 . The sailboat of  claim 1 , wherein the leeway force produced by the strut is 10% or less than the lifting force of the hydrofoil. 
     
     
         15 . The sailboat of  claim 1 , wherein the leeway force produced by the strut is 5% or less than the lifting force of the hydrofoil. 
     
     
         16 . The sailboat of  claim 13 , wherein the area of the strut contacting the water is 10% or less than the area of the hydrofoil contacting the water. 
     
     
         17 . The sailboat of  claim 13 , wherein the area of the strut contacting the water is 5% or less than the area of the hydrofoil contacting the water. 
     
     
         18 . Two or more hydrofoil apparatuses configured to be mounted to a sailboat hull, comprising:
 a. each hydrofoil apparatus configured to adjustably hold a hydrofoil assembly,   b. wherein each hydrofoil assembly comprises a strut and a hydrofoil,   c. the strut and the hydrofoil each having an area intended to contact water,   d. wherein the leeway force produced by the strut is small in comparison to the positive force of hydrofoil, and   e. the hydrofoils are configured to be outwardly canted with respect to the sailboat hull.   
     
     
         19 . The apparatuses of  claim 18 , wherein each hydrofoil apparatus is configured to adjustably hold a hydrofoil assembly in at least two positions. 
     
     
         20 . The apparatuses of  claim 18 , wherein each strut is oriented vertically and each hydrofoil is oriented horizontally. 
     
     
         21 . The apparatuses of  claim 18 , wherein each strut is oriented approximately vertically and each hydrofoil is oriented approximately horizontally. 
     
     
         22 . The apparatuses of  claim 20 , wherein each of the outwardly canted hydrofoils can be positioned to plane on the surface of the water. 
     
     
         23 . The apparatuses of  claim 20 , wherein each of the outwardly canted hydrofoils can be positioned to be immersed in the water. 
     
     
         24 . The apparatuses of  claim 22 , wherein each of the outwardly canted hydrofoils can be positioned to be immersed in the water. 
     
     
         25 . The apparatuses of  claim 18 , where the hydrofoil apparatuses are configured to resist heeling of the sailboat. 
     
     
         26 . The apparatuses of  claim 19 , wherein the hydrofoil apparatus are configured to adjustably hold the hydrofoils in a positive lift position. 
     
     
         27 . The apparatuses of  claim 19 , wherein the hydrofoil apparatus are configured to adjustably hold the hydrofoils in a negative lift position. 
     
     
         28 . The apparatuses of  claim 26 , wherein the hydrofoil apparatus are configured to adjustably hold the hydrofoils in a negative lift position. 
     
     
         29 . The apparatuses of  claim 19 , wherein each hydrofoil apparatus is configured to adjustably hold the hydrofoils in at least two vertical positions. 
     
     
         30 . The apparatuses of  claim 18 , wherein the struts have an area contacting the water that is much less than that of the area of the hydrofoils contacting the water so that the struts do not generate hydrodynamic forces which conflict with the lifting forces of the hydrofoils during operation of the sailboat. 
     
     
         31 . The sailboat of  claim 18 , wherein the leeway force produced by the strut is 10% or less than the lifting force of the hydrofoil. 
     
     
         32 . The sailboat of  claim 18 , wherein the leeway force produced by the strut is 5% or less than the lifting force of the hydrofoil. 
     
     
         33 . The sailboat of  claim 30 , wherein the area of the strut contacting the water is 10% less than the area of the hydrofoil contacting the water. 
     
     
         34 . The sailboat of  claim 30 , wherein the area of the strut contacting the water is 5% less than the area of the hydrofoil contacting the water.

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