Tube-Dispenser

Abstract

In one aspect, the present invention is directed to a tube-dispenser comprising: a piston, deployed inside the tube of the dispenser, for pushing the substance stored inside the dispenser towards the outlet of the dispenser; and a no-return mechanism for preventing the piston from falling back. According to one embodiment of the invention, the no-return mechanism is entirely deployed inside the tube. In one embodiment of the invention, the no-return mechanism comprises: a ribbed surface deployed along the interior wall of the tube; and at least one dowel attached to the piston correspondingly to the ribbed surface. In one embodiment of the invention, the ribbed surface comprises cogs. Preferably the cogs are of sawtooth form. The ribbed surface may also be a track along the tube, thereby enabling utilizing more dispensed substance than in the case where the ribbed surface is on the entire wall.

1 . A tube-dispenser comprising:
 a piston, deployed inside the tube of said dispenser, for pushing a substance stored inside said dispenser towards an outlet of said dispenser; and   a no-return mechanism for preventing said piston from falling back.   
   
   
       2 . A tube-dispenser according to  claim 1 , wherein said no-return mechanism is entirely deployed inside said tube. 
   
   
       3 . A tube-dispenser according to  claim 1 , wherein said no-return mechanism comprises:
 a ribbed surface deployed along the interior wall of said tube; and   at least one dowel attached to said piston corresponding to said ribbed surface.   
   
   
       4 . A tube-dispenser according to  claim 3 , wherein said ribbed surface comprises cogs. 
   
   
       5 . A tube-dispenser according to  claim 4 , wherein said cogs are of sawtooth form. 
   
   
       6 . A tube-dispenser according to  claim 3 , wherein said ribbed surface is a track along said tube. 
   
   
       7 . A tube-dispenser according to  claim 6 , wherein said piston comprises at least one depression corresponding to said track. 
   
   
       8 . A tube-dispenser according to  claim 6 , wherein said at least one dowel is a cog corresponding to said ribbed surface.