Asymmetric lid for use with an open-top container

Abstract

A lid for use with an open-top container comprises an annular top wall and a side wall extending from the top wall. The top wall comprises an opening for passage of flowable substance. The side wall includes a mounting portion for connecting the lid to the container. The mounting portion includes an annular flange and an upper surface. An extension section is defined between the upper surface and the annular flange. The extension section is located in proximity of the opening in the top wall. The extension section is configured to inhibit passage of the flowable substance at a contact location defined by overlapping of the upper portion of the sideseam joint and the outwardly curled lip overlap with one another.

1 . A lid for use with an open-top container comprising: 
 an annular top wall having an opening for passage of flowable substance; and    a side wall extending from the top wall, the side wall including a mounting portion for connecting the lid to the container, the mounting portion having an annular flange and an upper surface, an extension section being defined between the upper surface and the annular flange wherein the extension section is located in proximity to the opening in the top wall.    
   
   
       2 . The lid of  claim 1  wherein the open-top container is a paper cup having a sideseam joint and an outwardly curled lip wherein the outwardly curved lip is configured to fit snugly onto the mounting portion.  
   
   
       3 . The lid of  claim 2  wherein the extension section is configured to inhibit passage of the flowable substance at a contact location defined by overlapping an upper portion of the sideseam joint and the outwardly curled lip overlap with one another.  
   
   
       4 . The lid of  claim 1  wherein the extension section is extended downwardly and radially with respect to at least 5% of surface area of the mounting portion.  
   
   
       5 . The lid of  claim 1  wherein the top wall and the side wall are integrally formed with one another.  
   
   
       6 . A lid for use with a container having a sideseam joint and an outwardly curled lip, the lid comprising: 
 a top wall having an opening for passage of flowable substance into and out of the container; and    a side wall extending downwardly from the top wall, a lower portion of the side wall defining a mounting portion configured to sealingly engage with the container wherein the lower portion of the side wall comprises an extension section integrally attached to a portion of the mounting portion located in proximity of the opening to inhibit passage of the flowable substance at a contact location defined by overlapping of the sideseam joint and the outwardly curled lip with one another.    
   
   
       7 . The lid of  claim 6  wherein the top wall and the side wall are integrally formed with one another.  
   
   
       8 . The lid of  claim 6  wherein the mounting portion comprises an upper surface, an annular flange, and an outwardly flared skirt wherein the extension section is integrally attached between the upper surface and the annular flange.  
   
   
       9 . The lid of  claim 6  wherein the wherein the extension section is extended downwardly and radially with respect to about 5% to about 70% of surface area of the mounting portion.  
   
   
       10 . A container comprising: 
 a cup having an open-top, an outwardly curled lip and a sideseam joint; and    a lid configured to detachably enclose the open-top, the lid comprises of an annular top wall having an opening for passage of flowable substance into and out of the cup, a side wall depending from the top wall, a lower portion of the side wall defining a mounting portion configured to sealingly engage with the outwardly curled lip of the cup wherein the lower portion of the side wall comprises an extension section integrally attached to a portion of the mounting portion located in proximity of the opening to inhibit passage of the flowable substance at a contact location defined by overlapping of the sideseam joint and the outwardly curled lip with one another.    
   
   
       11 . The lid of  claim 10  wherein the mounting portion includes an upper surface, an annular flange, and an outwardly flared skirt wherein the extension section is integrally attached between the upper surface and the annular flange.  
   
   
       12 . The lid of  claim 10  wherein the extension section is extended downwardly and radially with respect to 10 to 50% of surface area of the mounting portion.