Closing device for a container

Abstract

A device for repeatedly opening and closure of a container is described. The device comprises a base member ( 1, 20 ) and a top member ( 2, 21 ), where a central bore ( 9, 31 ) is provided in the base member ( 1, 20 ), and where the top member is adapted to be fastened to the basis member ( 1, 20 ) and close the central bore ( 9, 31 ). The top member ( 2, 21 ) is fastened to the base member ( 1, 20 ) by means of retainers ( 11, 27 ) that are forced into interaction with the basic member ( 1, 29 ) by means of a press member ( 19, 24 ).

1 . A closing device for repeatedly opening and closing a container, comprising: 
 a base member configured with a central opening associated with an axially extending flange or edge, the base member adapted for fastening to a container opening on the container; and    a top member configured to couple with the base member so as to close the central opening of the base member, the top member having a plurality of retainers adapted for insertion into the central opening, and a press member adapted to press the retainers outward against the base member and into engagement with the flange or edge, thereby closing the container.    
     
     
         2 . The device of  claim 1 , wherein the press member is approximately axially movable between a position in which it presses the retainers into engagement with the edge or flange and a position in which it does not press the retainers into engagement with the edge or the flange.  
     
     
         3 . The device of  claim 1  wherein the retainers are elastic and retract from engagement with the edge or flange when they are not pressed by the press member.  
     
     
         4 . The device of  claim 1  wherein the press member is an elastic body that is fastened to a central portion of the top member, and is configured so that the elastic body is shifted to a position in which it does not press the retainers when the central portion is pressed down.  
     
     
         5 . The device of  claim 4  wherein the central portion is elastically mounted in the top member such that the central portion is drawn up and draws with it the elastic body when pressure on the central portion ceases.  
     
     
         6 . The device of  claim 1  wherein the container is a bottle.  
     
     
         7 . The device of  claim 1  wherein the base member is adapted for threading onto the container, and further includes an annular seal for sealing between the base member and the container.  
     
     
         8 . The device of  claim 1  further comprising an annular seal adapted to prevent leakage where the base member couples to the top member.  
     
     
         9 . A closing device for repeatedly opening and closing a container, comprising: 
 a base member configured with a central opening associated with an axially extending flange or edge, the base member integral to a container opening on the container; and    a top member configured to couple with the base member so as to close the central opening of the base member, the top member having a plurality of retainers adapted for insertion into the central opening, and a press member adapted to press the retainers outward against the base member and into engagement with the flange or edge, thereby closing the container.    
     
     
         10 . The device of  claim 9  wherein the press member is approximately axially movable between a position in which it presses the retainers into engagement with the edge or flange and a position in which it does not press the retainers into engagement with the edge or the flange.  
     
     
         11 . The device of  claim 9  wherein the retainers are elastic and retract from engagement with the edge or flange when they are not pressed by the press member.  
     
     
         12 . The device of  claim 9  wherein the press member is an elastic body that is fastened to a central portion of the top member, and is configured so that the elastic body is shifted to a position in which it does not press the retainers when the central portion is pressed down.  
     
     
         13 . The device of  claim 12  wherein the central portion is elastically mounted in the top member such that the central portion is drawn up and draws with it the elastic body when pressure on the central portion ceases.  
     
     
         14 . The device of  claim 9  wherein the container is a bottle.  
     
     
         15 . The device of  claim 9  further comprising an annular seal adapted to prevent leakage where the base member couples to the top member.  
     
     
         16 . A device for opening and closing a container, comprising: 
 a base member configured with a central opening that is associated with an opening of the container, the central opening having a flange or edge;    a plurality of retainers adapted for insertion into the central opening; and    a press member adapted to press the retainers outward against the base member and into engagement with the flange or edge, thereby closing the container.    
     
     
         17 . The device of  claim 16  wherein the press member is movable between a closed position in which it presses the retainers into engagement with the edge or flange, and an open position in which it does not press the retainers into engagement with the edge or the flange.  
     
     
         18 . The device of  claim 16  wherein the retainers retract from engagement with the edge or flange when they are not pressed by the press member, thereby enabling the container to be opened.  
     
     
         19 . The device of  claim 16  wherein the press member is an elastic body that is fastened to a central portion of a top member, and is configured so that the elastic body is shifted to a position in which it does not press the retainers when the central portion is pressed down, thereby enabling the container to be opened.  
     
     
         20 . The device of  claim 19  wherein the central portion is elastically mounted in the top member such that the central portion is drawn up and draws with it the elastic body when pressure on the central portion ceases.