Inflatable Paddle Board with Central Balancing Fin

Abstract

An inflatable paddle board includes a board body which is inflatable and a central balancing fin which is configured to be provided at a bottom of the board body, the central balancing fin increases the surface area in contact with the water, so as to provide additional lateral resistance, and this added resistance stabilizes the paddle board, making it less prone to tip over, and also maintain a straight trajectory by reducing the lateral drift.

1 . An inflatable paddle board, comprising:
 a board body which is inflatable, wherein the board body has a bottom surface and defines a center position on the bottom surface and a central line along a length direction of the board body; and   a central balancing fin which comprises an assembling base and a fin body extended from the assembling base, wherein the central balancing fin is provided at the bottom surface of the board body at the center position thereof, wherein the fin body comprises a first fin body part and a second fin body part which are integrated with each other, the first fin body part and the second fin body part are configured to be symmetrical to each other at two sides of the central line along the length direction of the board body, wherein the assembling base comprise a first assembling base part and a second assembling base part at two sides of the central line along the length direction of the board body and are symmetrical with each other.   
     
     
         2 . The inflatable paddle board, as recited in  claim 1 ,
 wherein the fin body has a gradually increased thickness toward the assembling base, wherein a maximum thickness of the fin body is 3 mm-30 mm, the central balancing fin has a height which is ranged from 150 mm-500 mm and a width which is ranged from 100 mm-400 mm.   
     
     
         3 . An inflatable paddle board, comprising:
 a board body which is inflatable, wherein the board body has a bottom surface and defines a center position on the bottom surface and a central line along a length direction of the board body; and   a first fin part and a second fin part which are provided at the bottom surface of the board body at the center position thereof, wherein the first fin part comprises a first fin body part, the second fin part comprises a second fin body part, the first fin body part and the second fin body part are configured to be symmetrical to each other at two sides of the central line along the length direction of the board body;   wherein the first fin part and the second fin part are spaced from each other to form two central balancing fins.   
     
     
         4 . The inflatable paddle board, as recited in  claim 2 , further comprising a central rear fin downwardly extended from the bottom surface of the board body at a rear end portion thereof and aligned along the central line of the board body so as to align with the central balancing fin. 
     
     
         5 . The inflatable paddle board, as recited in  claim 4 , wherein the central rear fin, having a triangular shape, has a base edge extended from the bottom surface of the board body, a streamlined front curve edge and an arched rear curve edge. 
     
     
         6 . The inflatable paddle board, as recited in  claim 2 , further comprising two rear fins which are downwardly extended from the bottom surface of the board body at a rear end portion thereof and are symmetrically distributed on two opposite sides of the central line of the board body. 
     
     
         7 . The inflatable paddle board, as recited in  claim 6 , wherein each of the rear fins, having a triangular shape, has a base edge extended from the bottom surface of the board body, a streamlined front curve edge and an arched rear curve edge. 
     
     
         8 . The inflatable paddle board, as recited in  claim 7 , wherein a width of each of the rear fins is smaller than a width of the fin body of the central balancing fin, wherein a height of each of the rear fins is smaller than a height of the fin body of the central balancing fin. 
     
     
         9 . The inflatable paddle board, as recited in  claim 5 , further comprising two rear fins which are downwardly extended from the bottom surface of the board body at a rear end portion thereof and are symmetrically distributed on two opposite sides of the central line of the board body, wherein each of the rear fins, having a triangular shape, has a base edge extended from the bottom surface of the board body, a streamlined front curve edge and an arched rear curve edge, wherein the central balancing fin comprise a fin body, wherein a width of each of the rear fins is smaller than a width of the fin body of the central balancing fin, wherein a height of each of the rear fins is smaller than a height of the fin body of the central balancing fin. 
     
     
         10 . The inflatable paddle board, as recited in  claim 2 , wherein the central balancing fin is detachably coupled to the bottom surface of the board body, wherein the central balancing fin has a center line which is perpendicular to a width of the central balancing fin, wherein when the central balancing fin is assembled on the bottom surface of the board body, the center line of the central balancing fin is deviated from the center position of the bottom surface of the board body along the length direction of the board body with a forward deviation distance within 30 cm and a backward deviation distance within 50 cm. 
     
     
         11 . The inflatable paddle board, as recited in  claim 4 , wherein the central rear fin is detachably coupled to the bottom surface of the board body. 
     
     
         12 . The inflatable paddle board, as recited in  claim 6 , wherein the two rear fins are detachably coupled to the bottom surface of the board body. 
     
     
         13 . The inflatable paddle board, as recited in  claim 2 , wherein the central balancing fin comprises the fin body having a trapezoid shape, wherein the fin body has a first edge slidably engaged with the holding channel to detachably couple the fin body at the bottom surface of the board body, a second edge which is shorter than the first edge and is parallel to the first edge, and two inclined side edges extended between the first edge and the second edge to define a front round corner between the second edge and one of the inclined side edges and a rear round corner between the second edge and another inclined side edge, wherein a front corner radii of the front round corner is larger than a rear corner radii of the rear round corner. 
     
     
         14 . (canceled) 
     
     
         15 . The inflatable paddle board, as recited in  claim 1 , wherein the assembling base comprise a base body portion and a retention portion extended from the retention portion, the fin body is extended from the retention portion, the base body portion comprises a first base body part and a second base body part at two sides of the central line along the length of the board body and are symmetrical with each other, the retention portion comprises a first retention part and a second retention part at two sides of the central line along the length of the board body and are symmetrical with each other. 
     
     
         16 . The inflatable paddle board, as recited in  claim 15 , wherein a width of the retention portion is smaller than a width of the base body portion. 
     
     
         17 . The inflatable paddle board, as recited in  claim 15 , wherein the assembling base has a retention hole formed in the retention portion. 
     
     
         18 . The inflatable paddle board, as recited in  claim 2 , wherein the board body comprises a fixing plate fixed to the bottom surface of the board body, and a holding body extended from the fixing plate, wherein the holding body has a holding channel, such that the central balancing fin is slid along the holding channel to detachably couple at the bottom surface of the board body. 
     
     
         19 . The inflatable paddle board, as recited in  claim 18 , wherein the board body comprises a fixing plate fixed to the bottom surface of the board body, and a holding body extended from the fixing plate, wherein the holding body has a holding channel, such that the central balancing fin is slid along the holding channel to detachably couple at the bottom surface of the board body, wherein the central balancing fin comprises the assembling base detachably coupled to the holding body and the fin body extended from the assembling base. 
     
     
         20 . (canceled)