Closure For A Container

Abstract

A closure for a container having a circular opening defining an axis, the closure being securable to the container so as to close said opening, the closure having an o-ring sealing member mounted thereon so as to provide a seal with a sealing surface of the container, when the closure is secured to the container, the sealing surface extending around an upper surface or an internal surface of the container. The closure may comprise a bore feature which, in use, extends through the opening into the interior of the container and the o-ring seal may be provided on the bore feature. Various forms of closure are described, e.g. for closing a bottle neck and a wide-mouth closure. The closure may comprise an inner component and an outer component, e.g. a cap-on-collar closure, and the container preferably has no thread features on the exterior thereof so it is comfortable to drink from.

1 .- 37 . (canceled) 
     
     
         38 . A closure for a container having a substantially circular opening defining an axis, the closure comprising:
 an inner component having a collar portion for locating about the exterior of the container,   an outer component for fitting over and/or around the inner component and interacting therewith so as to releasably secure the inner component to the container so the closure closes said opening, and   a bore member which, when the closure is secured to the container, extends through said opening into the interior of the container,   the closure having an o-ring sealing member mounted or mountable in or on an outer surface of the bore member so as to provide a seal with a sealing surface of the container, when the closure is secured to the container, said sealing surface extending around an internal surface of the container.   
     
     
         39 . A closure as claimed in  claim 38  in which the bore member is part of the inner and/or the outer component. 
     
     
         40 . A closure as claimed in  claim 38  in which the o-ring sealing member is located in a groove provided in the outer surface of the bore member, said groove comprising at least two faces for constraining the cross-section of the o-ring sealing member. 
     
     
         41 . A closure as claimed in  claim 39  in which the bore member is rotatable about said axis relative to the outer component. 
     
     
         42 . A closure as claimed in  claim 38  in which the closure comprises a cap having an upper portion and a skirt portion depending from said upper portion. 
     
     
         43 . A closure as claimed in  claim 42  in which said upper portion is circular and, when the closure is secured to the container, extends across the opening of the container. 
     
     
         44 . A closure as claimed in  claim 42  in which the outer component comprises an annular component that has an upper portion that, in use, overlies an upper surface of a lip of the container and a skirt portion that interacts with the inner component. 
     
     
         45 . A closure as claimed in  claim 42  in which the outer component comprises a cap with an upper portion and a skirt portion depending therefrom and the inner component comprises a collar, the collar being arranged to engage beneath an outwardly projecting lip of the container and to fit between the container and the cap so as to secure the cap to the container body. 
     
     
         46 . A closure as claimed in  claim 45  in which the inner component comprises a collar portion and a sealing portion which, in use, extends from said collar portion over an upper surface of the lip and the outer component is arranged to fit over the inner component so as to releasably secure the collar portion beneath an outwardly projecting lip of the container. 
     
     
         47 . A closure as claimed in  claim 38  in which the outer component is rotatably engageable with the inner component, said rotational engagement being provided by a multi-start thread form which requires rotation of less than 360 degrees between the outer component and the inner component to fasten and/or remove the closure from the container. 
     
     
         48 . A closure as claimed in  claim 46  in which the collar or collar portion comprises a ring portion, or other structure extending around the entire circumference of the collar portion, and a plurality of radially moveable portions spaced around the circumference of the ring portion, the radially moveable parts being joined at their lower ends to said ring portion or other structure. 
     
     
         49 . A closure as claimed in  claim 48  in which the radially moveable portions are resiliently biased towards said inner position. 
     
     
         50 . A closure as claimed in  claim 49  in which the outer component has a skirt portion with a plurality of cams spaced around its internal circumference for urging and/or holding said radially moveable portions in an inner position in which they are engaged beneath the lip of the container body. 
     
     
         51 . A closure as claimed in  claim 38  in combination with a container adapted to be closed by said closure.