Bottle for containing liquid

Abstract

Disclosed is a bottle for containing liquid content including a body portion, at least part or the entire portion of an upper portion of which is provided with a plurality of guides which protrudes inward from an inside surface thereof and is in a spiral pattern so that the liquid content can be guided towards an opening of a neck portion of the bottle while spirally revolving inside the bottle.

1 . A single-piece bottle comprising:
 a cap-engaging portion defining an opening of the single-piece bottle and configured to engage with a bottle cap;   a body portion coupled to the cap-engaging portion and comprising a body inner surface defining a liquid-containing space therein; and   at least one inwardly-protruded spiral guide formed on the body inner surface,   wherein the at least one inwardly-protruded spiral guide is configured to guide the flow of the fluid as it is discharged from the interior space through the cap-engaging portion,   wherein the at least one inwardly protruded spiral guide generally spirally extends about a central axis of the bottle that passes through the liquid-containing space; and   wherein the at least one inwardly-protruded spiral guide extends circumferentially about the central axis about 180° or more.   
     
     
         2 . The single-piece bottle of  claim 1 , wherein the at least one inwardly-protruded spiral guide extends between the top end of the body portion and the bottom end of the body portion. 
     
     
         3 . The single-piece bottle of  claim 1 , further comprising a rim at the bottom of the cap-engaging portion. 
     
     
         4 . The single-piece bottle of  claim 1 , wherein a distance between adjacent peaks formed by the at least one inwardly-protruded spiral guide at the first position is smaller than a distance between adjacent peaks formed by the at least one inwardly-protruded spiral guide at the second position. 
     
     
         5 . The single-piece bottle of  claim 1 , wherein the body portion comprises an outer surface and at least one depression on the outer surface that spirally extends and corresponds to the at least one inwardly-protruded spiral guide. 
     
     
         6 . The single-piece bottle of  claim 2 , further comprising a rim at the top end of the body portion. 
     
     
         7 . The single-piece bottle of  claim 2 , wherein the body portion comprises an outer surface and at least one depression on the outer surface that spirally extends and corresponds to the at least one inwardly-protruded spiral guide. 
     
     
         8 . The single-piece bottle of  claim 3 , wherein the body portion comprises an outer surface and at least one depression on the outer surface that spirally extends and corresponds to the at least one inwardly-protruded spiral guide. 
     
     
         9 . The single-piece bottle of  claim 4 , wherein the body portion comprises an outer surface and at least one depression on the outer surface that spirally extends and corresponds to the at least one inwardly-protruded spiral guide. 
     
     
         10 . The single-piece bottle of  claim 6 , wherein the body portion comprises an outer surface and at least one depression on the outer surface that spirally extends and corresponds to the at least one inwardly-protruded spiral guide. 
     
     
         11 . The single-piece bottle of  claim 1 , wherein the at least one inwardly-protruded spiral guide in a first position of the body portion is inclined more in a horizontal direction than in a second position of the body portion, wherein the second position is located below the first position.