Tamper-evident cap

Abstract

A tamper-evident closure for a container includes a straw having an outer edge with an outwardly extending projection. The closure includes a cap with a rib. A tamper-evident tab extends from the rib. The tab has an inwardly extending lug configured to engage with the outwardly extending projection of the straw as the cap rotates relative to the straw when the cap and the straw are secured together. The tab has a has a foldable portion configured to fold the lug inwardly to provide a visual indication when the cap is an unsealed configuration.

What is claimed is: 
     
         1 . A tamper-evident closure for a container, the closure comprising:
 a cap having a rib with a tab extending from the rib, the tab having an inwardly extending lug configured to engage with an outwardly extending projection of a straw as the cap rotates relative to the straw when the cap and the straw are secured together,   the tab having a foldable portion configured to fold the lug inwardly to provide a visual indication when the cap is an unsealed configuration.   
     
     
         2 . The tamper-evident closure of  claim 1 , wherein the tab includes a break segment configured to break when a threshold force is applied to transition the closure from a sealed configuration to an unsealed configuration. 
     
     
         3 . The tamper-evident closure of  claim 2 , wherein the cap has a plurality of ribs, wherein the tab extends from a first rib to a second rib. 
     
     
         4 . The tamper-evident closure of  claim 2 , wherein the cap has a plurality of ribs, wherein the tab extends across a first rib. 
     
     
         5 . The tamper-evident closure of  claim 1 , wherein the cap includes 
 an outer shell having gripping features; and   an inner cap body.   
     
     
         6 . The tamper-evident closure of  claim 5 , wherein the inner cap body includes internal threads configured to engage with external threads on the straw. 
     
     
         7 . The tamper-evident closure of  claim 5 , wherein a ratio of a maximum height of the outer shell to a height of one of the plurality of tabs is less than or equal 6:1. 
     
     
         8 . The tamper-evident closure of  claim 1 , wherein the lug has a slidable surface configured to slide on the projections. 
     
     
         9 . A method of visually indicating that a container has been tampered with, the method comprising:
 providing a container in a sealed configuration, the container having:
 a straw having an outer edge with an outwardly extending projection, and 
 
 a cap sealed to the straw, the cap having a rib with a tab extending from the rib, the tab having an inwardly extending lug configured to engage with the outwardly extending projection of the straw as the cap rotates relative to the straw, 
 the tab having a foldable portion configured to fold the lug inwardly; 
 
   rotating the cap relative to the straw to overcome a threshold force; and   folding the tab at the foldable portion.   
     
     
         10 . The method of  claim 9 , wherein the tab includes a break segment, configured to break when the threshold force is applied. 
     
     
         11 . The method of  claim 10 , further comprising breaking the break segment. 
     
     
         12 . The method of  claim 9 , wherein rotating the cap relative to the straw causes the lug of the cap to engage with the projection of the straw. 
     
     
         13 . The method of  claim 9 , wherein the cap has a plurality of ribs, wherein the foldable portion is coupled with a first rib and the break segment is coupled with a second rib. 
     
     
         14 . The method of  claim 9 , wherein the cap has a plurality of ribs, wherein the break segment is coupled with another tab. 
     
     
         15 . The method of  claim 9 , wherein the lug has a slideable surface, the method further comprising rotating the cap relative to the straw in the unsealed configuration so that the slideable surface slides on the projection. 
     
     
         16 . The method of  claim 9 , wherein the cap includes an outer shell having gripping features; and an inner cap body, the inner cap body having threads configured to engage with external threads on the straw, and the plurality of ribs extend from the inner cap body to the outer shell, wherein a ratio of a maximum height of the outer shell to a height of one of the plurality of tabs is less than or equal 6:1. 
     
     
         17 . A tamper-evident system comprising:
 a container configured to house a fluid;   a straw partially sealed within the container, the straw having an exposed portion and an unexposed portion, the straw further having an exposed outer edge with an outwardly extending projection;   a cap having an inner cap body and an outer shell, the cap having a rib extending from the inner cap body to the outer shell; and   one or more tabs having a foldable portion configured to fold when the container is in the unsealed configuration.   
     
     
         18 . The system of  claim 17 , wherein the one or more tabs include a break segment. 
     
     
         19 . The system of  claim 17 , wherein the tab extends from the rib, the tab having an inwardly extending lug configured to engage with the outwardly extending projection of the straw as the cap is coupled with and rotated relative to the straw. 
     
     
         20 . The system of  claim 17 , wherein a ratio of a maximum height of the outer shell to a height of one of the plurality of tabs is less than or equal 6:1.