Surfboard and blank for a surfboard

Abstract

A surfboard blank comprising:a central portion extending from a nose to a tail end of the surfboard blank wherein the central portion comprises a stringer with one or more central panels;rail panels attached on either lateral side of the central portion such that the central portion is flanked by said rail panels, wherein the rail panels generally extend along a longitudinal axis of the surfboard blank;wherein said central panels are formed from a first resilient foam core material and the rail panels are formed from a second resilient foam core material whereby the first resilient foam core material has greater buoyancy in water relative to the second resilient foam core material.

1 . A surfboard blank comprising components:
 a central portion extending from a nose to a tail end of the surfboard blank wherein the central portion comprises a stringer with one or more central panels;   rail panels attached on either lateral side of the central portion such that the central portion is flanked by said rail panels, wherein the rail panels generally extend along a longitudinal axis of the surfboard blank;   wherein said central panels are formed from a first resilient foam core material and the rail panels are formed from a second resilient foam core material whereby the first resilient foam core material has greater buoyancy in water relative to the second resilient foam core material.   
     
     
         2 . A surfboard blank according to  claim 1 , wherein the rail panels are attached to the central panels of the central portion along a linear axis that is offset from the longitudinal axis of the surfboard blank. 
     
     
         3 . A surfboard blank according to  claim 2 , wherein the linear axis is offset by less than 30 degrees from the longitudinal axis of the surfboard blank. 
     
     
         4 . A surfboard blank according to  claim 1 , wherein the central panels of the central portion have a width that is generally progressively narrower from the nose to the tail end of the surfboard blank. 
     
     
         5 . A surfboard blank according to  claim 1 , wherein the rail panels have a width that is generally progressively wider from the nose to the tail end of the surfboard blank. 
     
     
         6 . A surfboard blank according to  claim 1 , wherein the stringer spans the length of the central portion extending from the nose to the tail end of the surfboard blank and wherein the stringer along its length defines a center of mass of the surfboard blank. 
     
     
         7 . A surfboard blank according to  claim 1 , wherein the stringer comprises ayous. 
     
     
         8 . A surfboard blank according to  claim 1 , wherein the central portion is of expanded polystyrene material. 
     
     
         9 . A surfboard blank according to  claim 1 , wherein the central portion is of polyurethane material. 
     
     
         10 . A surfboard blank according to  claim 1 , wherein the rail panel is of polyurethane material. 
     
     
         11 . A surfboard blank according to  claim 1 , wherein the components of the surfboard blank are securely attached to one another using a glue. 
     
     
         12 . A surfboard constructed using a surfboard blank, the surfboard blank comprising:
 a central portion extending from a nose to a tail end of the surfboard blank wherein the central portion comprises a stringer with one or more central panels;   rail panels attached on either lateral side of the central portion such that the central portion is flanked by said rail panels, wherein the rail panels generally extend along a longitudinal axis of the surfboard blank;   wherein said central panels are formed from a first resilient foam core material and the rail panels are formed from a second resilient foam core material, whereby the first resilient foam core material has greater buoyancy in water relative to the second resilient foam core material, and wherein a coating is applied to the surfboard blank to provide the surfboard with resistant properties.   
     
     
         13 . A surfboard according to  claim 12 , wherein the central portion is of expanded polystyrene material. 
     
     
         14 . A surfboard according to  claim 12 , wherein the rail panel is of polyurethane material. 
     
     
         15 . A surfboard according to  claim 12 , wherein the central portion is coated with epoxy resin. 
     
     
         16 . A surfboard according to  claim 12 , wherein the rail panels are coated with polyester resin. 
     
     
         17 . A surfboard according to  claim 12 , wherein the central portion is of polyurethane material. 
     
     
         18 . A surfboard according to  claim 12 , wherein the rail panel is of expanded polystyrene material. 
     
     
         19 . A surfboard according to  claim 12 , wherein the central portion is coated with polyester resin. 
     
     
         20 . A surfboard according to  claim 12 , wherein the rail panels are coated with epoxy resin.