Floating Device

Abstract

A floating device and a method of keeping a floating device in position in water are provided. The floating device includes a main body and a projecting portion. The main body is configured to float on water. The projecting portion extends from the main body into the water to surround a part of water for keeping the main body in position.

What is claimed is: 
     
         1 . A floating device, comprising:
   4  a main body configured to float on water; and   a projecting portion extending from the main body into the water to surround a part of water for keeping the main body in position.   
     
     
         2 . The floating device as claimed in  claim 1 , wherein at least one opening is formed in the projecting portion for exhausting air surrounded by the projecting portion when the floating device is put in the water. 
     
     
         3 . The floating device as claimed in  claim 1 , wherein the projecting portion has a closed shape in cross section to surround the part of water. 
     
     
         4 . The floating device as claimed in  claim 3 , wherein the projecting portion comprises a plurality of side walls connected to the main body. 
     
     
         5 . The floating device as claimed in  claim 4 , wherein at least one opening is formed in the side walls for exhausting air surrounded by the side walls when the floating device is put in the water. 
     
     
         6 . The floating device as claimed in  claim 4 , wherein the floating device satisfies 0.00190775 (LBS/in 3 )≤F/V≤0.0198411 (LBS/in 3 ) where F is a maximum lateral force which the floating device in water can sustain without moving, and V is a volume of a space defined by the projecting portion. 
     
     
         7 . The floating device as claimed in  claim 4 , further comprising a reinforcement element connected to the projecting portion, wherein the reinforcement element is stiffer than the projecting portion. 
     
     
         8 . The floating device as claimed in  claim 7 , wherein the reinforcement element is a looped strip. 
     
     
         9 . The floating device as claimed in  claim 3 , wherein the projecting portion comprises a bottom wall and a plurality of side walls connected to the main body and the bottom wall. 
     
     
         10 . The floating device as claimed in  claim 9 , wherein at least one opening is formed in the bottom wall for introducing water into a space defined by the projecting portion. 
     
     
         11 . The floating device as claimed in  claim 9 , wherein the floating device satisfies 0.00248 (LBS/in 3 )≤F/V≤0.0261903 (LBS/in 3 ) where F is a maximum lateral force which the floating device in water can sustain without moving, and V is a volume of a space defined by the projecting portion. 
     
     
         12 . The floating device as claimed in  claim 9 , further comprising a weight disposed in the projecting portion. 
     
     
         13 . The floating device as claimed in  claim 12 , wherein the weight is fixed to the bottom wall. 
     
     
         14 . The floating device as claimed in  claim 1 , wherein:
 the floating device is an inflatable floating table;   the main body comprises an inflatable chamber;   the projecting portion is tubular, extending from the main body into the water when the main body floats on the water.   
     
     
         15 . The floating device as claimed in  claim 1 , wherein:
 the floating device is an inflatable floating table;   the main body comprises a plurality of inflatable chamber connected to each other;   the projecting portion is tubular, extending from the main body into the water when the main body floats on the water.   
     
     
         16 . The floating device as claimed in  claim 1 , wherein:
 the floating device is an inflatable floating chair;   the main body comprises an inflatable chamber;   the projecting portion is tubular, extending from the main body into the water when the main body floats on the water.   
     
     
         17 . A method of keeping a floating device in position in water, comprising:
 providing the floating device which comprises a main body and a projecting portion extending from the main body;   putting the floating device in the water, with the projecting portion disposed below a water surface to surround a part of water, thereby keeping the floating device in position in the water.   
     
     
         18 . The method as claimed in  claim 17 , further comprising:
 exhausting air surrounded by the projecting portion through at least one opening formed in the projecting portion, when the floating device is put in the water.   
     
     
         19 . The method as claimed in  claim 17 , further comprising:
 introducing water into a space defined by the projecting portion through at least one opening formed in the projecting portion, when the floating device is put in the water.