Closure device for a centrifuge tube

Abstract

The invention relates to a closure for a centrifuge tube, the centrifuge tube comprising an essentially cylindrical neck which forms an opening which can be closed by the closure. The invention is characterized by a lid with a cylindrical rim portion overlapping the neck, a number of cutouts arranged in a distributed manner on the periphery of the rim portion and a number of radially outwardly facing projections arranged in a distributed manner on the outer periphery of the neck. The projections can be brought into engagement with the associated cutouts of the lid when the lid is put onto the tube, locking in the manner of a bayonet closure taking place by a rotary movement of the lid. The invention relates likewise to an arrangement of projections on the inner rim region and cutouts on the neck of the centrifuge tube.

1 . A closure for a centrifuge tube, the centrifuge tube ( 1 ;  13 ) comprising an essentially cylindrical neck ( 2 ) which forms an opening which can be closed by the closure, which comprises: 
 a lid ( 4 ) with a cylindrical rim portion ( 5 ) overlapping the neck,    a number of cutouts ( 6 ) arranged in a distributed manner on the periphery of the rim portion ( 5 ),    a number of radially outwardly facing projections ( 3 ) arranged in a distributed manner on the outer periphery of the neck ( 2 ),    where the projections ( 3 ) can be brought into engagement with the associated cutouts ( 6 ) of the lid when the lid ( 4 ) is put onto the tube ( 1 ;  13 ), locking in the manner of a bayonet closure taking place by a rotary movement of the lid.    
   
   
       2 . The closure as claimed in  claim 1 , wherein the cutouts ( 6 ) are covered by webs ( 7 ) at least in the region of the lower edge of the rim portion ( 5 ).  
   
   
       3 . The closure as claimed in  claim 1 , wherein the cutouts ( 6 ) are designed in the form of a groove on the inner periphery of the rim portion ( 5 ).  
   
   
       4 . A closure for a centrifuge tube, the centrifuge tube being designed in particular as a cup ( 14 ) and comprising an essentially cylindrical neck ( 23 ) which forms an opening which can be closed by the closure, which comprises: 
 a lid ( 15 ) with a cylindrical rim portion ( 20 ) overlapping the neck ( 23 ),    a number of radially inwardly facing projections ( 19 ) arranged in a distributed manner on the inner periphery of the rim portion ( 20 ),    a number of groove-shaped cutouts ( 24 ) arranged in a distributed manner on the outer periphery of the neck ( 23 ), where the projections ( 19 ) can be brought into engagement with the associated cutouts ( 24 ) of the neck ( 23 ) when the lid ( 15 ) is put onto the cup ( 14 ), locking in the manner of a bayonet closure taking place by a rotary movement of the lid ( 15 ).    
   
   
       5 . The closure as claimed in  claim 1 , wherein the cutouts ( 6 ) are of roughly L-shaped design.  
   
   
       6 . The closure as claimed in  claim 1 , wherein the lid ( 4 ) has a hook-shaped extension ( 8 ) on the upper side, which can be hung in a corresponding opening ( 11 ) provided on the rotor ( 9 ) of a centrifuge.  
   
   
       7 . The closure as claimed in  claim 1 , wherein the lid ( 4 ) forms an essentially horizontally aligned opening on the upper side, which can be hung in a hook-shaped extension provided on the rotor ( 9 ) of a centrifuge.  
   
   
       8 . The closure as claimed in  claim 1 , which finds application in particular with microliter receptacles and Falcon receptacles and also cup-like receptacles ( 14 ).  
   
   
       9 . The closure as claimed in  claim 4 , wherein the cutouts ( 24 ) are of roughly L-shaped design.  
   
   
       10 . The closure as claimed in  claim 4 , wherein the lid ( 15 ) has a hook-shaped extension on the upper side, which can be hung in a corresponding opening provided on the rotor of a centrifuge.  
   
   
       11 . The closure as claimed in  claim 4 , wherein the lid ( 15 ) forms an essentially horizontally aligned opening on the upper side, which can be hung in a hook-shaped extension provided on the rotor of a centrifuge.  
   
   
       12 . The closure as claimed in  claim 4 , which finds application in particular with microliter receptacles and Falcon receptacles and also cup-like receptacles.