Two-Component Mixing and Dispensing Device

Abstract

A device ( 10 ) for preparing and ejecting polymeric cement made from at least two pre-packaged components comprises a tubular vessel ( 12 ) including a first axial end wall ( 14 ) having a closed outlet ( 16 ), and a second axial end wall ( 18 ) having an aperture ( 20 ). A first starting component ( 50 ) of the polymeric cement is present inside said tubular vessel near the first axial end wall ( 14 ) A shaft ( 22 ) extends through said aperture ( 20 ) of the second axial end wall ( 18 ). A piston element ( 34 ) comprises a closed container ( 36 ) filled with a second starting component ( 46 ) of the polymeric cement. The piston element ( 34 ) is selectively lockable to the shaft ( 22 ). The container has a bore ( 38 ) and is slidingly engaged upon said shaft. An agitator element ( 24 ) is secured to one end of the shaft ( 22 ). Furthermore opening means ( 56 ) for providing an opening in the closed container ( 36 ) are provided

1 . A device for preparing and ejecting polymeric cement made from at least two pre-packaged components, said device comprising: 
 a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture, wherein a first starting component of the polymeric cement is present inside said tubular vessel near the first axial end wall;    a shaft extending through said aperture of the second axial end wall, having a first section outside said vessel and a second section inside said vessel;    a piston element comprising a closed container filled with a second starting component of the polymeric cement, the container having a bore and being slidingly engaged upon the second section of said shaft;    an agitator element mounted on the end of the second section of said shaft;    wherein said piston element is selectively lockable to said shaft; and    wherein opening means for providing an opening in said closed container are provided, which opening means are operable by said shaft.    
   
   
       2 . A device according to  claim 1 , wherein said shaft is hollow, and is provided with a venting port.  
   
   
       3 . A device according to  claim 1 , wherein the shaft is provided with a screw thread section near the agitator element, and the bore of the container is also provided partly with a co-operating screw thread section.  
   
   
       4 . A device according to  claim 1 , wherein the tubular vessel has a non-circular cross-section.  
   
   
       5 . A device according to  claim 4 , wherein the tubular vessel has an elliptical cross-section.  
   
   
       6 . A device according to  claim 1 , wherein the opening means comprise at least one puncturing element for puncturing the wall of the container.  
   
   
       7 . A device according to  claim 6 , wherein said puncturing element is a hollow needle.  
   
   
       8 . A device according to  claim 1 , wherein said opening means are fixed to the agitator element.  
   
   
       9 . A device according to  claim 1 , wherein the opening means are provided on a plate slidingly engaged upon the second section of the shaft and arranged between the agitator element and the piston element.  
   
   
       10 . A device according to  claim 1 , wherein the first component is solid particulate material, and the second component is liquid.  
   
   
       11 . A device for preparing and ejecting polymeric cement made from at least two pre-packaged components, said device comprising: 
 a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture, wherein a first starting component of the polymeric cement is present inside said tubular vessel near the first axial end wall;    a hollow shaft extending through said aperture of the second axial end wall, having a first section outside said vessel and a second section inside said vessel;    a piston element comprising a closed container filled with a second starting component of the polymeric cement, the container having a bore and being slidingly engaged upon the second section of said shaft;    an agitator element mounted on the end of the second section of said shaft;    wherein said piston element is selectively lockable to said shaft;    wherein opening means for providing an opening in said closed container are provided, which opening means are operable by said shaft; and    wherein the opening means comprise at least one puncturing element for puncturing the wall of the container.    
   
   
       12 . A device according to  claim 11 , wherein the tubular vessel has a non-circular cross-section.  
   
   
       13 . A device according to  claim 11 , wherein the tubular vessel has an elliptical cross-section.  
   
   
       14 . A device according to  claim 11 , wherein the opening means comprise at least one puncturing element for puncturing the wall of the container.  
   
   
       15 . A device for preparing and ejecting polymeric cement made from at least two pre-packaged components, a first component of solid particulate material, and a second component of liquid, said device comprising: 
 a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture, wherein a first starting component of the polymeric cement is present inside said tubular vessel near the first axial end wall;    a hollow shaft extending through said aperture of the second axial end wall, having a first section outside said vessel and a second section inside said vessel, said shaft provided with a venting port;    a piston element comprising a closed container filled with a second starting component of the polymeric cement, the container having a bore and being slidingly engaged upon the second section of said shaft;    an agitator element mounted on the end of the second section of said shaft;    wherein said piston element is selectively lockable to said shaft;    wherein opening means for providing an opening in said closed container are provided, which opening means are operable by said shaft; and    wherein the opening means comprise at least one puncturing element for puncturing the wall of the container.    
   
   
       16 . A device according to  claim 15 , wherein the shaft is provided with a screw thread section near the agitator element, and the bore of the container is also provided partly with a co-operating screw thread section.  
   
   
       17 . A device according to  claim 15 , wherein said puncturing element is a hollow needle.  
   
   
       18 . A device according to  claim 15 , wherein the opening means are provided on a plate slidingly engaged upon the second section of the shaft and arranged between the agitator element and the piston element.