Volume Element, In Particular A Device For Water Sports

Abstract

The invention relates to a volume element comprising at least one first chamber which can be filled with a gas and can thereby be inflated and which is at least partly delimited by a flexible first wall, at least one second chamber which can be filled with the gas and can thereby be inflated and which is at least partly delimited by the first wall that is arranged between the first chamber and the second chamber and partly by a flexible second wall, and at least one third chamber which can be filled with the gas and can thereby be inflated and which is at least partly delimited by a flexible third wall that is arranged between the second chamber and the third chamber and partly delimits the second chamber.

1 . A volume element comprising:
 at least one first chamber, which is fillable with a gas and thereby inflatable, the first chamber being at least partially delimited by an inherently flexible first wall,   at least one second chamber, which is fillable with the gas and thereby inflatable, the second chamber being delimited in part by the first wall arranged between the first chamber and the second chamber, and in part by an inherently flexible second wall, and   at least one third chamber, which is fillable with the gas and thereby inflatable, the third chamber being at least partially delimited by a third wall, which is arranged between the second chamber and the third chamber, partially delimits the second chamber and is inherently flexible, wherein:
 the first wall is connected to the second wall in at least one first connection point, 
 the second wall is connected to the third wall in at least one second connection point, 
 the first wall and the third wall are connected to at least one inherently flexible fourth wall of the volume element in at least one third connection point, the fourth wall partially delimiting the first chamber or the third chamber, and 
 in a non-stretched and/or non-inflated state of the volume element, the sum of a continuously from the third connection point up to the first connection point extending first length of the first wall and of a continuously from the third connection point up to the second connection point extending second length of the third wall corresponds to a continuously from the first connection point up to the second connection point extending third length of the second wall. 
   
     
     
         2 . The volume element according to  claim 1 ,
 wherein:
 at least in the non-inflated state of the volume element, the first wall and the third wall adjoin to each other along a straight line, 
 the first connection point and the second connection point are spaced from each other along the straight line, and 
 at least in the non-inflated and/or non-stretched state of the volume element, the third connection point is located in a plane extending perpendicularly to the straight line and between the first and the second connection point. 
   
     
     
         3 . The volume element according to  claim 1 ,
 wherein the first chamber, the second chamber and the third chamber are fluidically connected to each other.   
     
     
         4 . The volume element according to  claim 1 ,
 wherein the first wall comprises at least one passage opening, via which the first chamber is fluidically connected to the second chamber.   
     
     
         5 . The volume element according to  claim 1 ,
 wherein the third wall comprises at least one passage opening, via which the second chamber is fluidically connected to the third chamber.   
     
     
         6 . The volume element according to  claim 1 ,
 wherein:
 the first wall is integrally formed and/or 
 the second wall is integrally formed and/or 
 the third wall is integrally formed. 
   
     
     
         7 . The volume element according to  claim 6 ,
 wherein the first wall is formed integrally with the third wall.   
     
     
         8 . The volume element according to  claim 6 ,
 wherein the second wall is formed separately from the first wall and/or separately from the third wall.   
     
     
         9 . The volume element according to  claim 1 ,
 wherein the second wall has a shape different from a planar shape in the inflated state of the volume element.   
     
     
         10 . The volume element according to  claim 1 ,
 wherein a connection of the second wall to the first wall and/or the third wall is omitted along the entire third length.   
     
     
         11 . The volume element according to  claim 1 ,
 wherein the second wall is formed of an air-tight material.   
     
     
         12 . The volume element according to  claim 1 ,
 wherein the first wall and/or the third wall are formed of an air-permeable material.   
     
     
         13 . The volume element according to  claim 1 ,
 wherein an envelope element in particular formed separately from the walls is arranged on a side of the second wall facing away from the first and the third wall.   
     
     
         14 . The volume element according to  claim 1 ,
 wherein the respective walls are connected to each other by stitching and/or adhering and/or welding.   
     
     
         15 . The volume element according to  claim 1 ,
 wherein the volume element is formed as a water sports device, in particular as a surfboard, floating island, air mattress or the like.