Valve nozzle for a dispenser for liquid cosmetic products

Abstract

The invention relates to a valve nozzle for a dispenser for a liquid cosmetic product, the nozzle including a reservoir and an internal piston which is actuated by the displacement of a base. The inventive nozzle is characterised in that it comprises a cap which closes the reservoir and is provided with a dispensing opening that can be closed in a sealed manner by a pin fixed to a spacer which is arranged inside the cap in a sliding manner and is provided with at least one line which successively ensures the emptying of the reservoir and the discharge of the product. According to the invention, the cap and the spacer define a space with a wall that has at least one elastically deformable region, enabling the pin to retract from the dispensing opening, following the actuation of the piston, in order to ensure the discharge of the product.

1 . Nozzle with a valve for dispensing a liquid cosmetic product comprising: 
 a reservoir;    an inner piston activated by the displacement of a base;    a cover that closes off the reservoir and has a dispensing orifice that can be blocked in a watertight fashion by means of a spigot solidly attached to a spacer housed so as to slide inside the cover; and    at least one conduit for venting of the reservoir and the evacuation of the product,    wherein said cover and said spacer delimiting between them an enclosure in which the wall has at least one area that can be elastically distorted making it possible to separate the spigot from the dispensing orifice, following the action of the piston, so as to assure the delivery of the product.    
   
   
       2 . Nozzle according to  claim 1 , wherein said distortable area consists of the top section of the cover, around the dispensing orifice.  
   
   
       3 . Nozzle according to  claim 2 , wherein said conduit is made through the spacer.  
   
   
       4 . Nozzle according to  claim 1 , wherein said distortable area consists of the top wall of a gas cell, which supports said spigot.  
   
   
       5 . Nozzle according to  claim 4 , wherein said cell is solidly attached to said spacer.  
   
   
       6 . Nozzle according to  claim 4  wherein said conduit is made in the perimeter of said cell.  
   
   
       7 . Nozzle according to  claim 1 , wherein the bottom perimeter of said spacer is provided with an element linking it with the top edge of the reservoir.  
   
   
       8 . Nozzle according to  claim 1 , wherein said cover includes a skirt that fits radially onto the outer side wall of the reservoirs.  
   
   
       9 . Nozzle according to  claim 1 , wherein said cover includes an inner stop that limits the upward sliding of the spacer when it is being assembled on the reservoir.  
   
   
       10 . Packaging method of a liquid cosmetic product in a dispenser comprising the steps of: 
 providing a nozzle including a reservoir and an inner piston activated by the displacement of a base in accordance with  claim 1;     after filling, fitting said cover onto the reservoir with the inner spacer in its low position to clear the dispensing orifice;    pushing said nozzle down allowing the air it contains to be released to the outside, through the conduit, the enclosure and the orifice until the spacer comes to a stop downwards against the bottom against the top edge of the reservoirs; and    stopping the cover against the spacer while the spigot enters the dispensing orifice in a watertight fashion.    
   
   
       11 . Method according to  claim 10 , wherein the nozzle is guided onto the dispenser, making the cover slide against the side wall of the reservoir, which thus offers a radial seat.