Compound bottles

Abstract

An apparatus includes an exterior portion, an interior portion, a first top, and a second top. The exterior portion includes an exterior wall, an exterior top end coupled to the exterior wall, and an exterior bottom closed end coupled to the exterior wall. The interior portion nests within the exterior portion and includes an interior wall having a geometry smaller than the exterior portion, an interior bottom closed end coupled to the interior wall, and an interior top end coupled to the interior wall opposite the interior bottom closed end. The first top closes the interior top end to form an interior space within the interior portion. The first top includes a first opening. The second top includes a second opening. The second top engages with the exterior bottom end in a stored position and engages with the exterior top end in a containing position.

1 . A system comprising:
 an exterior portion comprising:
 an exterior wall having a cylindrical geometry; 
 an exterior top end coupled to the exterior wall and comprising:
 a first thread disposed on an outside of the exterior top end; and 
 a second thread disposed on an inside of the exterior top end; and 
 
 an exterior bottom closed end coupled to the exterior wall to close an end of the exterior wall opposite the exterior top end and comprising:
 a third thread disposed on an outside of the exterior bottom closed end; 
 
   an interior portion configured to nest within the exterior portion, wherein the interior portion comprises:
 an interior wall having a cylindrical geometry smaller in diameter than the exterior portion and comprising:
 a fourth thread disposed on an outside of the interior wall to interface with the second thread inside the exterior top end of the exterior portion; 
 
 an interior bottom closed end coupled to the interior wall to close an end of the interior wall; and 
 an interior top end coupled to the interior wall to be opposite the interior bottom closed end and comprising: 
 a fifth thread disposed on an outside of the interior top end to interface with a sixth thread disposed on an inside of a first top; 
   the first top configured to close the interior top end of the interior portion to form an interior space within the interior portion, the first top comprising a first opening to allow access to the interior space within the interior portion; and   a second top comprising a second opening and a seventh thread, wherein the second top is configured to:
 engage the seventh thread with the third thread on the outside of the exterior bottom end of the exterior portion in a stored position; and 
 engage seventh thread with the first thread on the outside of the exterior top end of the exterior portion in a containing position; 
   a first cap configured to couple to the first top to close the first opening of the first top; and   a second cap configured to couple to the second top to close the second opening of the second top.   
     
     
         2 . The system of  claim 1 , wherein the first opening has a diameter less than a diameter of the interior top end of the of the interior portion. 
     
     
         3 . The system of  claim 1 , wherein the first cap is configured to thread onto the first top. 
     
     
         4 . The system of  claim 1 , wherein the first top is interchangeable with the second top. 
     
     
         5 . The system of  claim 1 , wherein the first cap is interchangeable with the second cap. 
     
     
         6 . The system of  claim 1 , wherein the interior wall of the interior portion has a diameter less than a diameter of the exterior wall of the exterior portion. 
     
     
         7 . The system of  claim 1 , wherein the interior top end has a diameter greater than a diameter of the interior wall of the interior portion and approximately equal to a diameter of the exterior wall of the exterior portion. 
     
     
         8 . The system of  claim 1 , wherein the fourth thread is disposed on the outside of the interior wall to be proximate the interior top end. 
     
     
         9 . An apparatus comprising:
 an exterior portion comprising:
 an exterior wall having a cylindrical geometry; 
 an exterior top end coupled to the exterior wall; and 
 an exterior bottom closed end coupled to the exterior wall to close an end of the exterior wall opposite the exterior top end; 
   an interior portion configured to nest within the exterior portion, wherein the interior portion comprises:
 an interior wall having a cylindrical geometry smaller in diameter than the exterior portion; 
 an interior bottom closed end coupled to the interior wall to close an end of the interior wall; and 
 an interior top end coupled to the interior wall to be opposite the interior bottom closed end; and 
   the first top configured to close the interior top end of the interior portion to form an interior space within the interior portion, the first top comprising a first opening to allow access to the interior space within the interior portion; and   a second top comprising a second opening, wherein the second top is configured to:
 engage with the exterior bottom end of the exterior portion in a stored position; and 
 engage with the exterior top end of the exterior portion in a containing position. 
   
     
     
         10 . The apparatus of  claim 9 , wherein the first top comprises a first vertical segment and a second vertical segment, wherein the first vertical segment is disposed outward on the first top and the second vertical is disposed inward on the first top from the first vertical segment. 
     
     
         11 . The apparatus of  claim 10 , wherein the first top comprises an angled segment extending between the first vertical segment and the second vertical segment, wherein the first vertical segment and the second vertical segment are coaxial. 
     
     
         12 . The apparatus of  claim 11 , further comprising a first cap configured to interface with the first top to close the opening of the first top and a second cap configured to interface with the second top to close the opening of the second top. 
     
     
         13 . The apparatus of  claim 12 , wherein at least one of the first cap and the second cap comprises a vertical segment extending into an interior space of the at least one of the first cap and the second cap. 
     
     
         14 . The apparatus of  claim 13 , wherein the vertical segment includes a first segment and a second segment positioned to receive the second vertical segment of the at least one of the first top and the second top. 
     
     
         15 . The apparatus of  claim 9 , wherein the interior top end comprises a transition segment angled between a relatively smaller diameter of the interior wall and a relatively larger diameter of the exterior wall. 
     
     
         16 . The apparatus of  claim 9 , wherein the exterior wall and the interior wall are separated by a gap to insulate contents of the interior portion. 
     
     
         17 . The apparatus of  claim 9 , wherein the exterior bottom closed end and the interior bottom closed end are separated by a gap to insulate contents of the interior portion. 
     
     
         18 . The apparatus of  claim 9 , wherein the interior portion has a volume of between 0.637 liters and 1.0 liters. 
     
     
         19 . The apparatus of  claim 9 , wherein the interior portion has a volume of approximately 0.75 liters. 
     
     
         20 . A method comprising:
 forming an exterior portion comprising:
 an exterior wall; 
 an exterior top end coupled to the exterior wall; 
 an exterior bottom closed end coupled to the exterior wall to close an end of the exterior wall opposite the exterior top end; 
   forming an interior portion to nest within the exterior portion, wherein the interior portion comprises:
 an interior wall having a geometry smaller than the exterior portion; 
 an interior bottom closed end coupled to the interior wall to close an end of the interior wall; and 
 an interior top end coupled to the interior wall to be opposite the interior bottom closed end; 
   forming the first top to at least partially close the interior top end of the interior portion to form an interior space within the interior portion; and   forming a second top comprising a second opening, wherein the second top is configured to:
 engage with the exterior bottom end of the exterior portion in a stored position; and 
 engage with the exterior top end of the exterior portion in a containing position.