Structure of an expandable and contractible container

Abstract

A container includes a closed end, several first ring-shaped parts, and several second-ring-shaped parts adjoining the first ring-shaped parts; each of the first ring-shaped parts has a vertical annular side while each of the second ring-shaped parts has a sloping annular side; when the container is stretched, the ring-shaped parts will be one on top of another to comprise a substantially cone-shaped vessel, which can be pressed into a flattened shape with smaller ones of the ring-shaped parts being relocated within adjacent larger ring-shaped parts; the second ring-shaped parts are formed in such a manner that an angle between each of the second ring-shaped parts and a horizontal line is 60 to 80 degrees; thus, the container is more similar to a cylinder to have a large volume; therefore, the container can be pressed to become flat so as to occupy less space, thus being easy to carry and transport.

1 . An expandable and contractible container structure, comprising
 a plurality of first ring-shaped parts each having a vertical annular side; and   a plurality of second ring-shaped parts each having a sloping annular side; the first ring-shaped parts adjoining the second ring-shaped parts to comprise a substantially cone-shaped vessel;   the second ring-shaped parts being formed in such a manner that an angle between each of the second ring-shaped parts and a horizontal line is no larger than 80 degrees and no smaller than 60 degrees.   
   
   
       2 . The expandable and contractible container structure as claimed in  claim 1  having a closed end, and an open end, which has a smaller diameter than the closed end in order for the container to serve as a water containing vessel. 
   
   
       3 . The expandable and contractible container structure as claimed in  claim 2  further comprising an ornamental cover to cover the open end thereof. 
   
   
       4 . The expandable and contractible container structure as claimed in  claim 1  having a closed end, and an open end, which has a larger diameter than the closed end in order for the container to be a substantially bowl-shaped vessel. 
   
   
       5 . The expandable and contractible container structure as claimed in  claim 4  further comprising an ornamental cover to cover the open end. 
   
   
       6 . An expandable and contractible container structure, comprising
 a plurality of first ring-shaped parts each having a vertical annular side; and   a plurality of second ring-shaped parts each having a sloping annular side; the first ring-shaped parts adjoining the second ring-shaped parts to comprise a substantially cone-shaped vessel;   the second ring-shaped parts being formed in such a manner that an angle between each of the second ring-shaped parts and a horizontal line is no larger than 80 degrees and no smaller than 60 degrees;   each of the second ring-shaped parts having a breach thereon.   
   
   
       7 . The expandable and contractible container structure as claimed in  claim 6 , wherein the breaches are formed on outer sides of the second ring-shaped parts. 
   
   
       8 . The expandable and contractible container structure as claimed in  claim 6  having a closed end, and an open end, which has a smaller diameter than the closed end in order for the container to serve as a water containing vessel. 
   
   
       9 . The expandable and contractible container structure as claimed in  claim 8  further comprising an ornamental cover to cover the open end. 
   
   
       10 . The expandable and contractible container structure as claimed in  claim 6  having a closed end, and an open end, which has a larger diameter than the closed end in order for the container to be a substantially bowl-shaped vessel. 
   
   
       11 . The expandable and contractible container structure as claimed in  claim 10  further comprising an ornamental cover to cover the open end.