Stopper for a container

Abstract

A stopper, configured to engage with an annular shoulder of a container in a clamping fit, comprises a circular bottom section which closes the container opening, and two head sections which project beyond the container. In between the head sections a slide is arranged which in a retracted initial state assumes, together with the head sections, a substantially frusta conical shape tapering to the upper side. The frusta conical edge has a maximum diameter which is at the most, as large as the outer diameter of the container at the container opening. The slide is adapted to be pushed forwards under the action of a force of a predetermined magnitude in one direction beyond the rim of the container. The projected slide can be gripped by a user to lever off the stopper from the container.

1 . A stopper which engages with an annular shoulder in a clamping fit into a container, comprising a circular bottom section which closes the container opening, and two head sections which project beyond the container and between which a slide is arranged which in the retracted initial state assumes, together with the head sections, substantially a frustoconical shape tapering to the upper side, said slide extending centrally between the head sections and terminating at both sides in circumferential sections of the frustoconical edge, said frustoconical edge having a maximum diameter which is at the most as large as the outer diameter of the container on the container opening, the slide being adapted to be pushed forwards under the action of a force of a predetermined magnitude in one direction beyond the rim of the container.  
   
   
       2 . The stopper according to  claim 1 , 
 wherein in the path of movement of the slide the bottom section of the stopper has formed thereon a projection on which in the initial position of the slide an elastically deformable bolt of the slide is abutting and can slide over the projection upon application of a force, and a stop for the bolt at a distance from the projection for defining the advance movement of the slide.    
   
   
       3 . The stopper according to  claim 1 , 
 wherein the circumferential section of the slide which is the rear one in the direction of advance movement of the slide forms the force application surface for advancing the slide.    
   
   
       4 . The stopper according to  claim 1 , 
 wherein the front circumferential section of the slide is broader than the remaining body of the slide and that the laterally projecting members in the retracted initial position of the slide abut on stops of the head sections of the stopper.    
   
   
       5 . The stopper according to  claim 1 , 
 wherein the upper side of the slide is in alignment with the upper side of the head sections.    
   
   
       6 . The stopper according to  claim 1 , 
 wherein the upper side of the slide is free from recessed grips and/or projections.    
   
   
       7 . The stopper according to  claim 1 , 
 wherein the slide, viewed in cross section, substantially has a downwardly broadening trapezoidal shape and is seated in correspondingly formed recesses of the two head sections.    
   
   
       8 . A combination comprising a stopper according to  claim 1  and a container, said container being provided on the edge of its opening with an inner annular shoulder on which the bottom section of the stopper is positioned.