Mechanism for a container for applying a cosmetic product and container comprising such a mechanism

Abstract

A mechanism for a container for applying a cosmetic product is designed to cause the cosmetic product to exit by at least one rotational movement. The mechanism includes at least one plastic sheath and one plastic casing external to the sheath, the plastic material of the sheath and the plastic material of the casing are selected from polypropylene and/or polyethylene terephthalate.

Having thus described the invention of the present application in detail and by reference to embodiments thereof, it will be apparent that modifications and variations are possible without departing from the scope of the invention defined in the appended claims as follows: 
     
         1 . A mechanism for a container for applying a cosmetic product, the mechanism being designed to cause the cosmetic product to exit by at least one rotational movement, said mechanism comprising at least:
 a sheath comprising internally at least one helical groove;   a guide rotatably mounted in the sheath;   the sheath surrounds the guide;   a cup carrying the cosmetic product, said cup being mounted in the guide;   the cup comprises at least one lug;   the guide comprises at least one slide extending axially in a straight line;   the free end of the at least one lug cooperates respectively with the at least one helical groove, the one lug passing radially through the associated slide of the guide in order to engage in the at least one helical groove;   an outer casing surrounding the sheath, the casing and the sheath being secured in rotation; the sheath and the casing being made of polypropylene.   
     
     
         2 . The mechanism according to  claim 1 , wherein the casing is held on the sheath by means of at least one thickened portion of material located between the sheath and the casing so that the sheath and the casing are secured at least in translation. 
     
     
         3 . The mechanism according to  claim 1 , wherein said at least one thickened portion of material ensures a force fitting of the casing around the sheath. 
     
     
         4 . The mechanism according to  claim 1 , wherein said at least one thickened portion of material is located on an inner surface of the casing and/or on an outer surface of the sheath. 
     
     
         5 . The mechanism according to  claim 1 , wherein the mechanism comprises a plurality of thickened portions of material distributed over the inner surface of the casing and/or the outer surface of the sheath. 
     
     
         6 . The mechanism according to  claim 4 , wherein said at least one thickened portion of material is a material bead arranged around the periphery of the inner surface of the casing and/or of the outer surface of the sheath. 
     
     
         7 . The mechanism according to  claim 6 , wherein said at least one thickened portion of material is two material beads arranged around the periphery of the inner surface of the casing. 
     
     
         8 . The mechanism according to  claim 1 , wherein said at least one thickened portion of material is arranged on a lower portion of the casing and/or of the sheath opposite an upper portion comprising an opening through which the cosmetic product can exit. 
     
     
         9 . The mechanism according to  claim 1 , wherein the cup is made of a plastic material selected from polypropylene and/or polyethylene terephthalate. 
     
     
         10 . The mechanism according to  claim 1 , wherein the casing and the sheath are interfused in at least one point, referred to as the assembly point, so as to be secured in rotation and in translation. 
     
     
         11 . A container for applying a cosmetic product comprising:
 a cover;   an actuating base which comprises a mechanism, the mechanism comprising
 a sheath comprising internally at least one helical groove; 
 a guide rotatably mounted in the sheath; 
 a cup carrying the cosmetic product, said cup being mounted in the guide; 
 an outer casing surrounding the sheath; 
   the sheath and the casing being made of a plastic material selected from polypropylene and/or polyethylene terephthalate;   the actuating base allowing entry and/or exit of the cosmetic product.   
     
     
         12 . The container according to  claim 11 , wherein the cover is made of plastic material selected from polypropylene and/or polyethylene terephthalate and/or the base is made of plastic material selected from polypropylene and/or polyethylene terephthalate.