System and Method for Containing Multiple Fluids

Abstract

A replacement lid and insert system for an existing fluid container includes a container lid with a straw compartment, a pour compartment, and a threaded portion compatible with the existing fluid container. A straw extends from the lid into the fluid container. A reservoir is in fluid communication with the pour compartment, the reservoir having an exterior shaped to reside within the fluid container and an interior segregated from the container interior. The reservoir can be coupled to the container lid through a reservoir interface or can be integral with the lid. The system may also include a container seal that creates a fluid-tight seal when the lid is coupled to the fluid container, a pour lid selectively covering the pour compartment, and a straw mouthpiece fluidly coupled to the straw.

I claim: 
     
         1 . A replacement lid and insert system for use with an existing fluid container having a container interior, the system comprising:
 a container lid having a straw compartment, a pour compartment, and a threaded portion configured to be compatible with the existing fluid container;   a straw extending from the lid into the existing fluid container;   a reservoir in fluid communication with the pour compartment and having a reservoir interior and a reservoir exterior, wherein the reservoir exterior is shaped to reside within the fluid container and wherein the reservoir interior is segregated from the container interior.   
     
     
         2 . The replacement lid and insert system of  claim 1 , wherein the reservoir is coupled to the container lid through a reservoir interface. 
     
     
         3 . The replacement lid and insert system of  claim 2 , wherein the reservoir interface comprises an internally threaded extension that corresponds to an externally threaded extension on the reservoir. 
     
     
         4 . The replacement lid and insert system of  claim 1 , wherein the reservoir is integral with the lid. 
     
     
         5 . The replacement lid and insert system of  claim 1 , further comprising a container seal that creates a fluid-tight seal when the lid is coupled to the fluid container. 
     
     
         6 . The replacement lid and insert system of  claim 1 , further comprising a pour lid selectively covering the pour compartment and a straw mouthpiece fluidly coupled to the straw and that allows selective access to the straw. 
     
     
         7 . The replacement lid and insert system of  claim 1 , wherein the reservoir has a rigid fixed volume or is a flexible bladder. 
     
     
         8 . The replacement lid and insert system of  claim 1 , wherein the reservoir has the same shape and volume of a traditional hip flask. 
     
     
         9 . The replacement lid and insert system of  claim 1 , wherein the reservoir configured to have the same volume in the reservoir interior as the volume of the container interior that is not filled with the insert system. 
     
     
         10 . The replacement lid and insert system of  claim 6 , wherein the straw mouthpiece is hingedly coupled to a handle that allows a user to pull the straw mouthpiece from a closed position to an open position. 
     
     
         11 . The replacement lid and insert system of  claim 6 , wherein the pour lid and/or the straw mouthpiece maintains an elevated pressure to allow a carbonated beverage to be stored in the container interior and/or the reservoir. 
     
     
         12 . A method of segregating at least two liquids in an existing fluid container having a container interior, the method comprising the acts of:
 providing a replacement lid and insert system of  claim 1 ;   filling the reservoir with a first fluid;   partially filling the fluid container interior with a second fluid;   inserting the reservoir into the container interior and securing the container lid to the fluid container.   
     
     
         13 . The method of  claim 12 , wherein the first fluid is an alcoholic beverage. 
     
     
         14 . The method of  claim 12  wherein the method further comprises:
 providing the replacement lid and insert system with a pour lid selectively covering the pour compartment and a straw mouthpiece fluidly coupled to the straw and that allows selective access to the straw; 
 providing a carbonated fluid into the container interior or the reservoir; and 
 selectively sealing the container interior or the reservoir containing the carbonated fluid to maintain an elevated pressure.