piston locking means

摘要

#CMT# #/CMT# The cartridge (1) has a storage chamber (6) including a filling end (12), a discharge end (14) and an inner wall (24) that extends between the filling and discharge ends. A piston (3) is moved in the chamber from the filling end to the discharge end along the inner wall to dispense a fluid filler material (8) from the chamber. The filler material is sealingly enclosed in the chamber by the piston at the filling end, where the piston is captively held within the inner wall by a projection part (22) i.e. spring element, that is provided at the inner wall in an environment of the filling end. #CMT# : #/CMT# An independent claim is also included for a method for manufacturing a cartridge. #CMT#USE : #/CMT# Cartridge i.e. multi-component cartridge, for use in a piston securing device for dispensing a fluid filler material. #CMT#ADVANTAGE : #/CMT# The filler material is sealingly enclosed in the chamber by the piston at the filling end, where the piston is captively held within the inner wall by the projection part i.e. spring element, that is provided at the inner wall in the environment of the filling end so as to allow the cartridge to be filled from the discharge end or from the filling end and to be closed by the piston, thus allowing the filler material to be stored in the storage chamber through the filling end for ensuring complete filling of the cartridge according to the insertion of the piston, and allowing the piston to be arranged during the manufacture of the cartridge without the need for additional working step onto a cylinder wall and without an obstacle for the piston during the assembly. The cartridge is designed such that discharge of the filling mass during filling the cartridge with filling mass is reduced, and the presence of air cushions between the piston and the filling mass during filling with filling mass is avoided. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a cartridge. 1 : Cartridge 3 : Piston 6 : Storage chamber 8 : Fluid filler material 12 : Filling end 14 : Discharge end 22 : Projection part 24 : Inner wall.