Windsurfing board

Abstract

A windsurfing board formed by a base that slides over the water and having a folding joint, with a mast, a sail and a boom with two lateral branches, some facing compartments with cover for concealed wheels, and another compartment with a watertight cover for documentation. The base has a rudder and/or lower wing with a moveable part activated by turning grips located on the boom. There are also some rollers for the two cables holding the harness of the windsurfer and some floats. On the lower edge of the sail is attached an addition whose lower edge is fixed to a support that turns with the foot of the mast. The mast has some limiting stops in its downward movement and is formed in three removable parts. The sail has some cross-pieces for stretching its free edge.

What is claimed is:  
     
         1 . A windsurfing board, comprising: 
 a base that slides on the surface of water, said base having a folding joint and a stem;    a mast having a foot, a sail and a boom with two lateral branches, said mast being connected to the base;    a plurality of facing compartments in the base with a cover for concealed wheels and another compartment with a watertight cover to hold documents;    at least one rudder with a moveable part activated by means of a control buckle formed by cables connected to the base;    turning activation grips located on both lateral branches of the boom and a transmission that allows a turning movement of the mast with respect to the base without cables entwining;    guides, accessible from the folding joint of the base, for sliding and blockable coupling of the mast foot, said guides having sliders and at least one blocking bolt that seats in some holes made in a surface of the base;    a control buckle for the rudder located inside the foot of the mast, the foot of the mast having a cup joint formed by two perpendicular axes with stops to limit movement and elastomer shock absorbing portions;    two rollers on both branches of the boom for two cables to hold a windsurfer's harness, said rollers having a recovery spring and means for blocking the rolling of the cable;    a float located in an end rear part of each branch of the boom;    a halyard to raise the sail looped between a lug at the base of the mast and a pulley at an end of the boom, said halyard having an external elastic piece, a retaining hook at an end of the halyard, and a stop for the sliding movement of the hook along branches of an edge, wherein on at least one branch of the loop of the halyard is fixed at least one pulley for a harness for a windsurfer during the raising of the sail;    an anchoring point on the stem of the base for the hook at the end of the halyard for handling the board in water when not sailing;    an addition on a lower edge of the sail, wherein a lower edge of said addition is fixed to a turning support attached to the foot of the mast.    
     
     
         2 . A board according to  claim 1 , wherein the folding joint on the base has hidden hinges and holding claws for an unfolded position, and further comprising a cable with a hook fixed to a prow of the base, said hook hooking onto a point on a stern of the base to maintain a folded position.  
     
     
         3 . A board according to  claim 1 , wherein each of the seating compartments for the wheels has two swinging half covers, wherein the wheel is set on one half-cover and wherein the other half cover holds a removed position of the wheel by an end bolt.  
     
     
         4 . A board according to  claim 1 , wherein a moveable part of the rudder is activated by cables of the control buckle by means of an end balance, said cables being located in an access compartment that can be opened, and further comprising a watertight cover through which access is also given to the compartment, wherein the cables inside the access compartment are rolled in a manner to absorb their extension.  
     
     
         5 . A board according to  claim 1 , wherein transmission of the control buckle has two concentric casings inside each other that slide together and vertically along a coupling bolt in the foot of the mast, with both casings being independent in their turning movement, wherein ends of the cables having turning grips are attached to one of the casings by an external balance, an articulated rod and an axle, and coupled to the other casing by an axle, an articulated rod and another end balance are the ends of the cables of the control buckle that acts on a moveable portion of the rudder.  
     
     
         6 . A board according to  claim 4 , wherein the cables have rollers holding the harness of the windsurfer, said rollers having a roller drum activated by a strip, said drum having an end widening with radial grooves, wherein an outer blocking part of a handle with return spring is inserted in said radial grooves, wherein the drum is mounted on an inside of a casing formed by two concentric cylindrical pieces; one of the cylindrical pieces having a longitudinal groove and the other a helicoidal groove for outlet of a harness holding cable, wherein the external one of the two pieces has a turning movement on the inside one of the two pieces, regulating a longitudinal position of the outlet of the harness holding cable.  
     
     
         7 . A board according to  claim 1 , wherein the halyard passes under an area of the stem of the base and has an external hook fixed in an anchoring point on an upper part of the stem, to immobilize the sail in a lowered position.  
     
     
         8 . A board according to  claim 1 , wherein the mast of the sail is formed in three removable pieces.  
     
     
         9 . A board according to  claim 1 , wherein the base has a concealed hook on the stem and a concealed extender to hold a folded position of the base, said extender having an end fixing with a coupling closure to a hook on a lower part of the stem of the base.  
     
     
         10 . A board according to  claim 1 , wherein an axis of the concealed wheels have end prolongations with widened ends to hook on rubbers to ensure a concealed and/or open position.  
     
     
         11 . A board according to  claim 1 , wherein the base has a front wing centered in a longitudinal direction, said front wing adapted to be installed in various positions, and being fixed to the base by a pivot and incorporating a recovery spring for its centered position and stops for a pivoting movement to each side.  
     
     
         12 . A board according to  claim 11 , wherein the stops are formed by ends of a groove in the base along which runs an upper projecting rod on the wing.  
     
     
         13 . A board according to  claim 12 , wherein the wing has a directional part and activation cables which are mounted on a support attached to the pivoting movement of the wing.  
     
     
         14 . A board according to  claim 13 , wherein an upper part of the control buckle has gears attached to the boom that mesh with a crown with a coupling axis at various heights, direct through a joint, to one of various pulleys placed inside the mast at various heights, with the coupling of the axle and the pulleys turning together; wherein the axle and pulleys are joined together mechanically and with another lower pulley by a cable with clamps, wherein said lower pulley has an eccentric lever with an end bolt for coupling to the transmission casings of the mast foot of the control buckle.  
     
     
         15 . A board according to  claim 4 , wherein the cover of the access compartment has a mechanically inset closure by a finger-activated slider and a recovery spring.  
     
     
         16 . A board according to  claim 1 , wherein the lower addition to the sail is mounted by two upper and lower holding ribs, wherein the upper rib is fixed swinging by its forward part to an axle of a ring at the mast foot, while the lower rib is fixed by its front part and turning to a joint of the mast foot, both ribs having rear parts that are joined by a rod or extension that is fixed-by hinges to the upper rib and by a cup to the lower rib, both ribs having channels through which pass the lower part extended below of the sail, with the lower rib having a lower elastic portion to adapt to a curvature of the base and seal off passage of air.  
     
     
         17 . A board according to  claim 1 , wherein the sail has holding shrouds connected to stretching cross pieces on a free side of the sail, said holding shrouds being fixed to ends of the cross pieces, wherein the shrouds are held at an upper end to an upper point of the sail and at a lower end to both lateral branches of the boom, and wherein the shrouds have intermediate tensors.  
     
     
         18 . A board according to  claim 16 , wherein the foot of the mast has an upper lug to hold the lower rib.