Inflatable liferaft

Abstract

The present invention relates to an inflatable liferaft comprising at least an inflatable first tube, an inflatable second flotation tube, said first and second flotation tubes being adapted to be arranged substantially above each other, said first and second flotation tubes extending circumferentially for providing a substantially ring-shaped area; and a bottom element which is adapted to provide a bottom to the substantially ring-shaped area. Furthermore, said first and second flotation tubes are arranged separately substantially above each other, and said first and second flotation tubes are mainly connected via said bottom element.

1 . An inflatable liferaft comprising at least an inflatable first flotation tube, an inflatable second flotation tube, said first and second flotation tubes being adapted to be arranged substantially above each other, said first and second flotation tubes extending circumferentially for providing a substantially ring-shaped area; and a bottom element which is adapted to provide a bottom to the substantially ring-shaped area, characterised in that said first and second flotation tubes are arranged separately substantially above each other, and said first and second flotation tubes mainly being connected via said bottom element. 
     
     
         2 . The inflatable liferaft according to  claim 1 , wherein the bottom element is detachable or securely connected to the first and second flotation tubes. 
     
     
         3 . The inflatable liferaft according to  claim 1 , wherein the bottom element comprises a floor part and side part so that the bottom element has a configuration substantially as a vessel. 
     
     
         4 . The inflatable liferaft according to  claim 1 , wherein the first and second flotation tubes are connected and mutually fixated via the bottom element. 
     
     
         5 . The inflatable liferaft according to  claim 1 , wherein the first and second flotation tubes as well as the bottom element comprise corresponding connection means. 
     
     
         6 . The inflatable liferaft according to  claim 5 , wherein the connection means are zips, groove/flange connection, frapping, he/she connections or the like. 
     
     
         7 . The inflatable liferaft according to  claim 5 , wherein the connection means are securely attached after the connection. 
     
     
         8 . The inflatable liferaft according to  claim 5 , wherein the connection means are being sealed after the connection. 
     
     
         9 . The inflatable liferaft according to  claim 7 , wherein the bottom element is welded or glued to the flotation tubes. 
     
     
         10 . The inflatable liferaft according to  claim 5 , wherein the connection means of the first and second flotation tubes are arranged on its inside and the corresponding connection means of the bottom element is arranged on its outside. 
     
     
         11 . The inflatable liferaft according to  claim 5 , wherein the connection means of the first and second flotation tubes are arranged on its outside and the corresponding connection means of the bottom element is arranged on its inside. 
     
     
         12 . The inflatable liferaft according to  claim 1 , wherein the bottom element extends between the first flotation tube and second flotation tube. 
     
     
         13 . The inflatable liferaft according to  claim 12 , wherein the connection means of the first flotation tube is arranged on its inside, the connection means of the second flotation tube is arranged on its outside and the corresponding connection means of the bottom element are arranged on the outside for the first flotation tube and on the inside for the second flotation tube. 
     
     
         14 . The inflatable liferaft according to  claim 1 , wherein a third or more flotation tube(s) is/are arranged above the second flotation tube and/or in relation to the first and second flotation tubes, said third or more flotation tube(s) comprise connection means, which are adapted to be connected with corresponding connection means arranged on the bottom element. 
     
     
         15 . The inflatable liferaft according to  claim 1 , wherein the liferaft comprises a plurality of modules. 
     
     
         16 . The inflatable liferaft according to  claim 15 , wherein each flotation tube comprises at least one module, said module comprises at least one tube part. 
     
     
         17 . The inflatable liferaft according to  claim 15 , wherein each flotation tube comprises two or more modules, said modules comprising at least one tube part. 
     
     
         18 . The inflatable liferaft according to  claim 15 , wherein a capacity of the liferaft is adjusted by the number of modules incorporated into said flotation tubes. 
     
     
         19 . The inflatable liferaft according to  claim 17 , wherein the modules in each flotation tube are mutually detachable or securely connected. 
     
     
         20 . The inflatable liferaft according to  claim 15 , wherein the bottom element comprises two or more modules, said modules being detachable or securely connected. 
     
     
         21 . The inflatable liferaft according to  claim 20 , wherein the connection(s) of the modules of the bottom element is/are sealed. 
     
     
         22 . The inflatable liferaft according to  claim 1 , wherein one or more inflatable reinforcement members is/are arranged, said reinforcement members extending in a lateral and/or longitudinal direction of the liferaft. 
     
     
         23 . The inflatable liferaft according to  claim 22 , wherein said reinforcement member(s) is/are detachable or securely connected to the liferaft. 
     
     
         24 . The inflatable liferaft according to  claim 1 , wherein one or more inflatable canopy support members is/are arranged. 
     
     
         25 . The inflatable liferaft according to  claim 24 , wherein the canopy support members is/are detachable or securely connected to the liferaft. 
     
     
         26 . The inflatable liferaft according to  claim 24 , wherein a canopy is adapted to cover the liferaft. 
     
     
         27 . The inflatable liferaft according to  claim 1 , wherein the flotation tubes, the bottom element, the reinforcement members, the canopy support members and/or the canopy are made of a polymeric material, such as natural rubber (NR), polyurethane (PU), thermoplastic poly urethane (TPU), butyl rubber (BR), polyvinylchloride (PVC), polychloroprene (CR), polyethylene (PE), or a combination thereof.