Inflatable watercraft

Abstract

An inflatable watercraft includes an upper wall, a lower wall connected to the upper wall so as to form a bottom main body, an inner wall extended longitudinally, and an outer wall also extended longitudinally. The inner wall, the outer wall and the upper wall are connected to form a tubular body around the bottom main body. Alternatively, the inner wall, the outer wall and the lower wall are connected to form a tubular body around the bottom main body. When deflated, the tubular body collapses due to gravity so that the outer wall is superposed on the inner wall.

1 . An inflatable watercraft comprising:
 an upper wall;   a lower wall connected to the upper wall so as to form a bottom main body;   an inner wall extended longitudinally;   an outer wall also extended longitudinally;   wherein the inner wall, the outer wall and the upper wall are connected to form
 a tubular body around the bottom main body, or the inner wall, the outer wall and the lower wall are connected to form a tubular body around the bottom main body; 
   wherein, when deflated, the tubular body collapses due to gravity so that the outer wall is superposed on the inner wall.   
     
     
         2 . The inflatable watercraft as claimed in  claim 1 , further comprising a conduit projected from the lower wall, wherein the bottom main body and the tubular bodies are configured to form a cockpit, and the conduit connects an interior of the cockpit to an exterior of the cockpit. 
     
     
         3 . The inflatable watercraft as claimed in  claim 2 , further comprising a rudder wherein the conduit is disposed in the rudder. 
     
     
         4 . The inflatable watercraft as claimed in  claim 1 , further comprising a seat detachably connected to the tubular body. 
     
     
         5 . The inflatable watercraft as claimed in  claim 4 , wherein the seat comprises a strap and a hook connected to the strap, the tubular body comprises a plurality of fastening loops arranged longitudinally, and the hook is configured to selectively catch one of the fastening loops. 
     
     
         6 . An inflatable watercraft comprising:
 a bottom main body extended longitudinally;   two tubular bodies extended longitudinally and connected to the bottom main body;   wherein each of the tubular bodies comprises an inner wall and an outer wall connected to the inner wall;   wherein the inner wall is shorter than the outer wall in cross section.   
     
     
         7 . The inflatable watercraft as claimed in  claim 6 , further comprising a conduit projected from the bottom main body, wherein the bottom main body and the tubular bodies are configured to form a cockpit, and the conduit connects an interior of the cockpit to an exterior of the cockpit. 
     
     
         8 . The inflatable watercraft as claimed in  claim 7 , further comprising a rudder wherein the conduit is disposed in the rudder. 
     
     
         9 . The inflatable watercraft as claimed in  claim 6 , further comprising a seat detachably connected to the tubular bodies. 
     
     
         10 . The inflatable watercraft as claimed in  claim 9 , wherein the seat comprises a strap and a hook connected to the strap, the tubular bodies comprise a plurality of fastening loops arranged longitudinally, and the hook is configured to selectively catch one of the fastening loops. 
     
     
         11 . An inflatable watercraft comprising:
 a bottom main body extended longitudinally;   two tubular bodies extended longitudinally;   wherein the bottom main body comprises extension portions extending through undersides of the tubular bodies and turning up to connect to the tubular bodies.   
     
     
         12 . The inflatable watercraft as claimed in  claim 11 , further comprising a conduit projected from the bottom main body, wherein the bottom main body and the tubular bodies are configured to form a cockpit, and the conduit connects an interior of the cockpit to an exterior of the cockpit. 
     
     
         13 . The inflatable watercraft as claimed in  claim 12 , further comprising a rudder wherein the conduit is disposed in the rudder. 
     
     
         14 . The inflatable watercraft as claimed in  claim 11 , further comprising a seat detachably connected to the tubular bodies. 
     
     
         15 . The inflatable watercraft as claimed in  claim 14 , wherein the seat comprises a strap and a hook connected to the strap, the tubular bodies comprise a plurality of fastening loops arranged longitudinally, and the hook is configured to selectively catch one of the fastening loops.