Dispenser head configured to be snap-fastened, a device including such a dispenser head, and a packaging device including such a dispenser head

Abstract

A device may include a container including a neck. The device may also include a dispenser head configured to be snap-fastened on the neck. The dispenser head may include a base portion including a sealing skirt that is engaged in the neck and a fastener for fastening onto the neck having a shape. The sealing skirt may include an outer surface envelope that is not circularly symmetrical and that is configured to reduce a risk of the sealing skirt being damaged while the sealing skirt is inserted in the neck. The orifice may be defined by a free edge of the sealing skirt with a shape that is different from the shape of the neck.

1 . A device comprising: 
 a container including a neck having a shape; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt that is engaged in the neck, wherein the sealing skirt includes an outer surface envelope that is not circularly symmetrical and that is configured to reduce a risk of the sealing skirt being damaged while the sealing skirt is inserted in the neck, and wherein an orifice defined by a free edge of the sealing skirt has a shape that is different from the shape of the neck.    
   
   
       2 . A device according to  claim 1 , wherein the dispenser head comprises two fastener tabs.  
   
   
       3 . A device according to  claim 2 , wherein the two fastener tabs are disposed facing each other.  
   
   
       4 . A device according to  claim 1 , wherein the dispenser head comprises more than two fastener tabs.  
   
   
       5 . A device according to  claim 1 , wherein the sealing skirt includes an oblong-shaped free edge with a major axis that is substantially perpendicular to a line interconnecting the fastener tabs.  
   
   
       6 . A device according to  claim 5 , wherein the line is situated in a mid-plane of the fastener tabs.  
   
   
       7 . A device according to  claim 1 , wherein the dispenser head comprises two fastener arms extending generally perpendicularly to an axis of the sealing skirt and being configured to move apart while the dispenser head is assembled.  
   
   
       8 . A device according to  claim 7 , wherein the fastener arms interconnect two support tabs that are disposed on either side of the sealing skirt.  
   
   
       9 . A device according to  claim 1 , wherein the sealing skirt includes an oblong-shaped free edge with a major axis that is substantially perpendicular to an ovalizing direction of the sealing skirt while the base portion is assembled on the neck.  
   
   
       10 . A device according to  claim 9 , wherein a ratio of half the major axis of the free edge over half a minor axis of the free edge is at least 1.1.  
   
   
       11 . A device according to  claim 1 , wherein, over at least one angular sector, the sealing skirt includes a portion with an inside surface that is substantially cylindrical and a generator line that is substantially parallel to the axis of the sealing skirt.  
   
   
       12 . A device according to  claim 1 , wherein, over at least one angular sector, the sealing skirt includes a portion with a tapering inside surface.  
   
   
       13 . A device according to  claim 1 , wherein the sealing skirt includes two opposite first portions with substantially cylindrical inside surfaces and two opposite second portions with inside surfaces that slope inward, at least in part, toward the free edge of the sealing skirt.  
   
   
       14 . A device according to  claim 1 , wherein the sealing skirt includes two opposite first portions with tapering inside surfaces and two opposite second portions with inside surfaces that slope inward, at least in part, toward the free edge of the sealing skirt.  
   
   
       15 . A device according to  claim 13 , wherein the second portions are undercut at least in part.  
   
   
       16 . A device according to  claim 14 , wherein the second portions are undercut at least in part.  
   
   
       17 . A device according to  claim 13 , wherein the first portions include an outside surface with a cylindrical and conical shape.  
   
   
       18 . A device according to  claim 13 , wherein the second portions include an outside surface that is rounded and outwardly convex.  
   
   
       19 . A device according to  claim 3 , wherein the sealing skirt includes two opposite first portions with substantially cylindrical inside surfaces and two opposite second portions with inside surfaces that slope inward, at least in part, toward the free edge of the sealing skirt, and wherein the second portions are situated facing the fastener tabs of the base portion.  
   
   
       20 . A device according to  claim 19 , wherein the first portions include tapering inside surfaces.  
   
   
       21 . A device according to  claim 19 , wherein the opposite second portions are undercut at least in part.  
   
   
       22 . A device according to  claim 8 , wherein the sealing skirt includes two opposite first portions with substantially cylindrical inside surfaces, and two opposite second portions with inside surfaces that slope inward, at least in part, toward the free edge of the sealing skirt, and wherein the first portions are situated facing the support tabs of the fastener arms.  
   
   
       23 . A device according to  claim 1 , wherein the sealing skirt is connected to a top wall of the base portion by an annular portion with a substantially cylindrical outside surface configured to bear in a leaktight manner against an inside surface of the neck.  
   
   
       24 . A device according to  claim 1 , wherein an orifice of the dispenser head is off-center relative to an axis of the sealing skirt.  
   
   
       25 . A device according to  claim 1 , wherein the orifice of the dispenser is extended by an annular sealing lip extending inside the sealing skirt.  
   
   
       26 . A device according to  claim 1 , wherein the dispenser head includes a lid that is connected to the base portion by a film-hinge.  
   
   
       27 . A device according to  claim 2 , wherein each fastener tab is connected on a radially outer side thereof to at least one stiffening web.  
   
   
       28 . A device according to  claim 27 , wherein the at least one stiffening web is connected to a top wall of the base portion.  
   
   
       29 . A device according to  claim 1 , wherein the dispenser head includes an outer skirt with a cross-section that is generally oblong-shaped along a major axis thereof.  
   
   
       30 . A device according to  claim 2 , wherein the dispenser head includes an outer skirt with a cross-section that is generally oblong-shaped along a major axis thereof, and wherein the fastener tabs generally extend transversely to the major axis of the outer skirt.  
   
   
       31 . A device according to  claim 2 , wherein the fastener tabs interconnect two support tabs that are disposed on either side of the sealing skirt, and wherein the support tabs generally extend transversely to a major axis of the outer skirt.  
   
   
       32 . A device according to  claim 1 , wherein the free edge of the sealing skirt is set back from a free end of the fastener tabs.  
   
   
       33 . A device comprising: 
 a container including a neck; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt that is engaged in the neck and fastener means for fastening onto the neck, the fastener means tending to ovalize the sealing skirt in an ovalizing direction during assembly of the device, the sealing skirt including an oblong-shaped free edge with a major axis that is substantially perpendicular to the ovalizing direction.    
   
   
       34 . A device comprising: 
 a container including a neck; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt and two fastener tabs configured to fasten on the neck, the fastener tabs tending to move apart during assembly of the device, the sealing skirt comprising two first portions with tapering inside surfaces, and two second portions, each disposed between the two first portions, the two second portions including inside surfaces that are undercut, at least in part, the second portions being situated substantially facing the fastener tabs.    
   
   
       35 . A device comprising: 
 a container including a neck; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt and two support tabs supporting fastener arms on the neck, the support tabs tending to move closer together during assembly of the device, the sealing skirt comprising two first portions including tapering inside surfaces, and two second portions including inside surfaces that are undercut, at least in part, each first portion being disposed between the two second portions and being situated substantially facing the support tabs.    
   
   
       36 . A device comprising: 
 a container including a neck; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt that is engaged in the neck and at least two fastener tabs configured to fasten onto the neck, wherein the sealing skirt includes an outer surface envelope that is not circularly symmetrical.    
   
   
       37 . A device comprising: 
 a container containing a single substance and including a neck; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt that is engaged in the neck, wherein the sealing skirt includes an outer surface envelope that is not circularly symmetrical and that is configured to reduce a risk of the sealing skirt being damaged while the sealing skirt is inserted in the neck.    
   
   
       38 . A packaging device comprising: 
 a container including a neck; and    a dispenser head configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt with a free edge that deforms while the base portion is being assembled on the container, the sealing skirt having substantially no inwardly-directed portion on first portions on a periphery thereof that tend to be displaced toward a center during the assembly, the sealing skirt comprising at least one inwardly-directed portion on at least one second portion on the periphery thereof, the at least one second portion being located between the first portions.    
   
   
       39 . A dispenser head for fastening onto a container including a neck having a shape, the dispenser head being configured to be snap-fastened on the neck, the dispenser head including a base portion including a sealing skirt that is engaged in the neck, wherein the sealing skirt includes an outer surface envelope that is not circularly symmetrical and that is configured to reduce a risk of the sealing skirt being damaged while the sealing skirt is inserted in the neck, and wherein an orifice defined by a free edge of the sealing skirt has a shape that is different from the shape of the neck.  
   
   
       40 . A device according to  claim 9 , wherein a ratio of half the major axis of the free edge over half a minor axis of the free edge is at least 1.02.  
   
   
       41 . A device according to  claim 22 , wherein the inside surfaces of the first portions are tapering.  
   
   
       42 . A device according to  claim 22 , wherein the second portions are undercut, at least in part.