Cartridge with piston restraint

Abstract

A cartridge with at least one material receptacle chamber, an axially displaceable piston arranged in the material receptacle chamber and a piston restraint for preventing the at least one piston from being pressed out of the pertinent material receptacle chamber. The piston restraint consists of an elastic restraining disk that is realized in the form of a disk spring and positively and/or non-positively held on the inner wall of the at least one material receptacle chamber.

1 . Cartridge with at least one material receptacle chamber, an axially displaceable piston arranged in the material receptacle chamber and a piston restraint for preventing the at least one piston from being pressed out of the pertinent material receptacle chamber, characterized by the fact that the piston restraint consists of a springable restraining disk that is realized similar to a disk spring and positively and/or non-positively held on the inner wall of the at least one material receptacle chamber.  
     
     
         2 . Cartridge according to  claim 1 , characterized by the fact that the restraining disk has an annular shape.  
     
     
         3 . Cartridge according to  claim 1 , characterized by the fact that the restraining disk consists of metal.  
     
     
         4 . Cartridge according to  claim 1 , characterized by the fact that the restraining disk consists of spring steel.  
     
     
         5 . Cartridge according to  claim 1 , characterized by the fact that the restraining disk has a thickness of a few tenths of a millimeter.  
     
     
         6 . Cartridge according to  claim 1 , characterized by the fact that the restraining disk is curved or inclined in the direction of the piston.  
     
     
         7 . Cartridge according to  claim 1 , characterized by the fact that the restraining disk can be inserted into the material receptacle chamber by the means of a ram.