Leak-proof container lid with foam insulation

Abstract

A container lid includes: a lid housing having a hollow body, an opening formed therethrough, and a thread pattern formed thereon for mating the container lid to a container; a closure mechanism coupled to the lid housing and operable to reversibly seal the opening; and foam insulation disposed within the hollow body.

What is claimed is: 
     
         1 . A container lid comprising:
 a lid housing having a hollow body, an opening formed therethrough, and a thread pattern formed thereon for mating the container lid to a container;   a closure mechanism coupled to the lid housing and operable to reversibly seal the opening; and   foam insulation disposed within the hollow body.   
     
     
         2 . The container lid of  claim 1 , wherein the foam insulation is formed so as to at least partially surround the opening. 
     
     
         3 . The container lid of  claim 1 , wherein the opening is disposed between the thread pattern and the foam insulation. 
     
     
         4 . The container lid of  claim 1 , wherein the foam insulation substantially fills the hollow body. 
     
     
         5 . The container lid of  claim 1 , wherein the thread pattern is formed on the lid housing so as to face outwardly with respect to the container lid. 
     
     
         6 . The container lid of  claim 1 , wherein a proximal end of the closure mechanism is connected to the lid housing at a connection point, and the closure mechanism is operable to pivot about the connection point. 
     
     
         7 . The container lid of  claim 6 , wherein the closure mechanism is operable to pivot between an open position in which the opening is open and a closed position in which the opening is sealed. 
     
     
         8 . The container lid of  claim 7 , wherein the closure mechanism includes a hook portion disposed at a distal end of the closure mechanism that is configured to receive a rim of the lid housing, thereby reversibly holding the closure mechanism in place when the closure mechanism is in the closed position. 
     
     
         9 . The container lid of  claim 8 , wherein the rim that is received by the hook portion is disposed at a same side of the lid housing as the opening. 
     
     
         10 . The container lid of  claim 8 , wherein the hook portion includes a grip portion protruding outwardly from a distal end of the hook portion with respect to the container lid. 
     
     
         11 . The container lid of  claim 7 , wherein the closure mechanism includes a recess portion formed near a distal end of the closure mechanism that is configured to mate with a protrusion portion of the lid housing, thereby reversibly holding the closure mechanism in place when the closure mechanism is in the open position. 
     
     
         12 . The container lid of  claim 11 , wherein the protrusion portion is formed on an end of the lid housing that is diametrically opposed to the opening. 
     
     
         13 . The container lid of  claim 7 , wherein the closure mechanism includes an opening plug disposed near a distal end thereof that is configured to fit within the opening so as to reversibly seal the opening when the closure mechanism is in the closed position. 
     
     
         14 . The container lid of  claim 7 , wherein a range of motion of the closure mechanism between the open position and the closed position is approximately 180 degrees. 
     
     
         15 . The container lid of  claim 1 , wherein a vent is formed through the lid housing and the foam insulation, and the closure mechanism includes a vent plug that is configured to fit within the vent so as to reversibly seal the vent when the closure mechanism is in the closed position. 
     
     
         16 . The container lid of  claim 1 , further comprising a gasket surrounding a portion of the lid housing. 
     
     
         17 . The container lid of  claim 1 , wherein one or more air pockets are disposed within the hollow body adjacent to the foam insulation. 
     
     
         18 . The container lid of  claim 17 , wherein one or more walls extend outwardly from an inner surface of the hollow body and come into contact with the foam insulation, thereby forming the one or more air pockets. 
     
     
         19 . The container lid of  claim 1 , wherein a thickness of a first region of the foam insulation is less than a thickness of a second region of the foam insulation. 
     
     
         20 . The container lid of  claim 19 , wherein the first region is an end of the foam insulation proximate to the opening, and the second region is an opposite end of the foam insulation.