Kit for installing hydrofoils on a boat, in particular on a wind-propelled boat, and method for installing such a kit on such a boat

Abstract

The application relates to a kit for installing hydrofoils (22, 32, 45, 55) for a boat (1). The kit for installing hydrofoils (22, 32, 45, 55) includes: at least one support block (21, 31); and at least two hydrofoil arms (22, 32) each having a hydrofoil (24, 34). The or each support block (21, 31) includes: at least one adapter part shaped to cooperate with a structural element (15, 13) of the boat (1) and to be attached thereto, the adapter part providing a reference plane for the hydrofoil arm(s); and a plate on which at least one of the hydrofoil arms (22, 32) is intended to be mounted, the plate being capable of being mounted on the adapter part along the reference plane.

1 . A kit for installing hydrofoils for a boat, the boat comprising at least two hulls connected to one another by at least one connecting arm, the at least one connecting arm forming at least one structural element, the kit for installing hydrofoils comprising:
 at least one support block intended to be attached to the at least one structural element,   at least two hydrofoil arms, each having a hydrofoil intended to be at least partially submerged,   wherein the at least one support block comprises:   at least one adapter part shaped to interact with the structural element and to be attached to the latter, the adapter part providing a reference plane for the hydrofoil arm(s),   a plate on which at least one of the at least two hydrofoil arms is intended to be mounted, the plate being capable of being mounted on the at least one adapter part along the reference plane.   
     
     
         2 . The kit for installing hydrofoils as claimed in  claim 1 , wherein each hydrofoil arm of the at least two hydrofoil arms is mounted on the corresponding plate using at least a first and a second ball joint arranged on either side of the hydrofoil arm of the at least two hydrofoil arms with at least one of the at least first and the second ball joints mounted movably in translation relative to the plate. 
     
     
         3 . The kit for installing hydrofoils as claimed in  claim 2 , wherein the at least first and second ball joints for each hydrofoil arm of the at least two hydrofoil arms are both movable in translation relative to the plate. 
     
     
         4 . The kit for installing hydrofoils as claimed in  claim 3 , further comprising, for each hydrofoil arm of the at least two hydrofoil arms, an adjustment system comprising two gears meshed together and rotating as one with the first and second ball joints, respectively. 
     
     
         5 . The kit for installing hydrofoils as claimed in  claim 3 , wherein, for each hydrofoil arm of the at least two hydrofoil arms, the at least first and second ball joints equip an end of said hydrofoil arm which has no hydrofoil, the at least first and second ball joints defining together an axis of pivoting of the hydrofoil arm with respect to the structural element, and wherein the kit for installing hydrofoils further includes, for each hydrofoil arm of the at least two hydrofoil arms, a complementary support for said hydrofoil arm on the boat on which the hydrofoil arm is mounted by means of a sliding pivot connection. 
     
     
         6 . The kit for installing hydrofoils as claimed in  claim 1 , wherein each hydrofoil arm of the at least two hydrofoil arms is mounted on the corresponding plate using a ball joint and wherein there is further provided a complementary support for each hydrofoil arm of the at least two hydrofoil arms on the boat on which the hydrofoil arm of the at least two hydrofoil arms is mounted by means of a sliding pivot connection. 
     
     
         7 . The kit for installing hydrofoils as claimed in  claim 6 , wherein an inclination adjustment system is further provided for each hydrofoil arm of the at least two hydrofoil arms. 
     
     
         8 . The kit for installing hydrofoils as claimed in  claim 1 , further comprising at least one rudder blade having an additional hydrofoil ( 45 ). 
     
     
         9 . The kit for installing hydrofoils as claimed in  claim 8 , further comprising a mounting system for mounting the at least one rudder blade on the boat, the mounting system comprising:
 a first and a second mounting elements rotatable on the hull of the boat about a common rudder axis, the second mounting element (being intended to be arranged along the rudder axis below the first mounting element when the boat is afloat,   the first mounting element having a pivot axis along which the rudder blade is intended to pivot, the pivot axis being transverse to the rudder axis,   and in that the second mounting element is intended to be assembled to one out of the rudder blade and the hull by elastic interlocking.   
     
     
         10 . A method for equipping a boat with a kit for installing hydrofoils as claimed in  claim 1 , the boat comprising at least one structural element, the equipping method comprising the following steps:
 attaching at least one adapter part to the structural element,   attaching at least one plate to the at least one adapter part along the reference plane, the adapter part and the plate participating in the formation of at least one support block,   mounting the hydrofoil arms on the plate(s).   
     
     
         11 . The kit for installing hydrofoils as claimed in  claim 1 , wherein the at least one adapter part has a longitudinal housing shaped to receive a portion of the connecting arm forming the support element. 
     
     
         12 . The kit for installing hydrofoils as claimed in  claim 5 , wherein the sliding pivot connection is removable. 
     
     
         13 . The kit for installing hydrofoils as claimed in  claim 5 , wherein the sliding pivot connection is provided by a strap. 
     
     
         14 . The kit for installing hydrofoils as claimed in  claim 6 , wherein the sliding pivot connection is removable. 
     
     
         15 . The kit for installing hydrofoils as claimed in  claim 7 , wherein the sliding pivot connection is provided by a strap. 
     
     
         16 . The kit for installing hydrofoils as claimed in  claim 8  wherein the additional hydrofoil of the of the at least one rudder blade is a T-shaped hydrofoil. 
     
     
         17 . A kit for installing hydrofoils for a boat, the kit for installing hydrofoils comprising:
 at least one support block intended to be attached to the at least one structural element,   at least two hydrofoil arms, each having a hydrofoil intended to be at least partially submerged,   wherein the at least one support block comprises:   at least one adapter part shaped to interact with the structural element and to be attached to the latter, the adapter part providing a reference plane for the hydrofoil arm(s),   a plate on which at least one of the at least two hydrofoil arms is intended to be mounted, the plate being capable of being mounted on the at least one adapter part along the reference plane,   wherein each hydrofoil arm of the at least two hydrofoil arms is mounted on the corresponding plate using at least a first and a second ball joint arranged on either side of the hydrofoil arm of the at least two hydrofoil arms with at least one of the at least first and the second ball joints mounted movably in translation relative to the plate.   
     
     
         18 . The kit for installing hydrofoils for a boat according to  claim 17 , wherein the kit for installing hydrofoils is for a boat monohull boat that comprises a deck and a hull, the structural element comprising at least the deck of the boat, the adapter part having a bearing surface complementary to a portion of the deck of the boat on which it is intended to bear. 
     
     
         19 . The kit for installing hydrofoils for a boat according to  claim 18 , wherein one out of the adapter part and the plate comprises a strap passage to allow the passage of a strap surrounding the hull in order to attach the support block to the deck. 
     
     
         20 . The kit for installing hydrofoils for a boat according to  claim 17 , the kit for installing hydrofoils is for a boat comprising at least two hulls connected to one another by at least one connecting arm, the at least one connecting arm forming at least one structural element.