Inside diameter adjustable flat straw

Abstract

An inside diameter adjustable straw flat straw includes a rectangular-shaped main body having front and back surfaces; a first engagement member, which is formed on the front surface of the main body and which is formed in a convex shape being extended from one end of the main body to the opposite end thereof; a second engagement member, which is formed on the back surface, which is formed in a concave shape, and which is formed parallel to the first engagement member; and a third engagement member, which is formed on the back surface, which is formed in a concave shape, and which is formed parallel to the second engagement member at a predetermined distance.

We claim: 
     
         1 . An inside diameter adjustable straw flat straw comprising:
 a rectangular-shaped main body having front and back surfaces;   a first engagement member, which is formed on the front surface of the main body and which is formed in a convex shape being extended from one end of the main body to the opposite end thereof;   a second engagement member, which is formed on the back surface, which is formed in a concave shape, and which is formed parallel to the first engagement member; and a third engagement member, which is formed on the back surface, which is formed in a concave shape, and which is formed parallel to the second engagement member at a predetermined distance.   
     
     
         2 . A straw according to  claim 1 , wherein the main body and the first engaging portion are made of a silicone resin. 
     
     
         3 . A straw according to  claim 2 , wherein the main body and the first engaging portion are formed in an integral structure. 
     
     
         4 . A straw according to  claim 1 , wherein the first engagement member formed in a mushroom shape at its cross section. 
     
     
         5 . A straw according to  claim 2 , wherein the first engagement member formed in a mushroom shape at its cross section. 
     
     
         6 . A straw according to  claim 2 , wherein the first engagement member formed in a mushroom shape at its cross section. 
     
     
         7 . A straw according to  claim 1 , wherein the cross-sectional shape of the first engagement member, is the same as that of the second engagement member, and the third engagement member, respectively. 
     
     
         8 . A straw according to  claim 2 , wherein the cross-sectional shape of the first engagement member, is the same as that of the second engagement member, and the third engagement member, respectively. 
     
     
         9 . A straw according to  claim 3 , wherein the cross-sectional shape of the first engagement member, is the same as that of the second engagement member, and the third engagement member, respectively. 
     
     
         10 . A straw according to  claim 4 , wherein the cross-sectional shape of the first engagement member, is the same as that of the second engagement member, and the third engagement member, respectively. 
     
     
         11 . A straw according to  claim 5 , wherein the cross-sectional shape of the first engagement member, is the same as that of the second engagement member, and the third engagement member, respectively. 
     
     
         12 . A straw according to  claim 6 , wherein the cross-sectional shape of the first engagement member, is the same as that of the second engagement member, and the third engagement member, respectively.