Fluid dispenser

Abstract

A fluid dispenser including a reservoir forming a neck presenting a thread, a dispenser member, and a fastener system including a fastener ring provided with assembly means for assembling on the thread of the neck in such a manner that the ring is unscrewable from the neck over an axial unscrewing stroke. The outer wall of the neck is provided with a shoulder, and the fastener system includes a security band engaged on the fastener ring. The band axially abuts the shoulder and is secured to the fastener ring at the end of the unscrewing stroke, so as to prevent the fastener system from being removed from the neck immediately after the fastener ring has been unscrewed. The security band includes an unblocking mechanism for disengaging the band from its axial abutment with the shoulder of the neck.

1 . A fluid dispenser comprising:
 a fluid reservoir forming a neck presenting an outer wall provided with a thread;   a dispenser member, such as a pump; and   a fastener system for fastening the dispenser member on the neck of the reservoir, the system including a fastener ring provided with reception means for receiving the dispenser member, and with assembly means for assembling on the thread of the neck in such a manner that the ring is unscrewable from the neck over an axial unscrewing stroke;   wherein   the outer wall of the neck is provided with a shoulder; and   the fastener system further including a security band that is engaged on the fastener ring, the band coming into axial abutment with the shoulder of the neck, the band being secured to the fastener ring at the end of the axial unscrewing stroke, so as to prevent the fastener system from being removed from the neck of the reservoir after the fastener ring has been unscrewed;   said dispenser being characterized in that the security band includes unblocking means for disengaging the band from its axial abutment with the shoulder of the neck.   
     
     
         2 . A dispenser according to  claim 1 , wherein the unblocking means comprise two diametrally-opposite actuation zones that can be pressed so as to deform the band, the band including at least one abutment element for coming into abutment below the shoulder of the neck, the deformation of the band by pressing on the actuation zones disengaging said at least one abutment element from below the shoulder. 
     
     
         3 . A dispenser according to  claim 1 , wherein the unblocking means comprise a tear-off strip that, after being torn off, makes it possible to disengage the band from the shoulder. 
     
     
         4 . A dispenser according to  claim 3 , wherein the tear-off strip extends over a fraction of the periphery of the band , the band including at least one abutment element for coming into abutment below the shoulder of the neck, the abutment element being formed at the tear-off strip. 
     
     
         5 . A dispenser according to  claim 1 , wherein the fastener ring comes to bear against the band so as to engage said at least one abutment element around the neck , to below its shoulder. 
     
     
         6 . A dispenser according to  claim 1 , wherein the fastener system further includes a covering hoop that extends around the fastener ring and the security band when the fastener system is assembled on the neck, the band being released from the hoop at the end of the unscrewing stroke. 
     
     
         7 . A dispenser according to  claim 6 , wherein the covering hoop comes into engagement with the actuation zones of the security band, so as to block said at least one abutment element below the shoulder of the neck when the fastener system is assembled on the neck. 
     
     
         8 . A dispenser according to  claim 6 , wherein the covering hoop includes an outer casing and an inner sleeve that is engaged in the outer casing, the sleeve coming into clamping engagement around the fastener ring, the band advantageously being arranged axially below the inner sleeve. 
     
     
         9 . A dispenser according to  claim 6 , wherein the fastener profile is formed by the covering hoop. 
     
     
         10 . A dispenser according to  claim 1 , wherein the band is axially movable relative to the ring over a distance that is not less than the axial unscrewing stroke. 
     
     
         11 . A dispenser according to  claim 1 , wherein the band includes fastener means that come into axial abutment with a fastener profile of the fastener system at the end of the axial unscrewing stroke, the band thus coming into abutment against the shoulder of the neck, in such a manner that the fastener ring cannot be released from the neck. 
     
     
         12 . A dispenser according to  claim 11 , wherein the fastener profile is formed by the fastener ring. 
     
     
         13 . A dispenser according to  claim 1 , wherein the assembly means of the fastener ring comprise deformable regions in which the thread of the neck becomes embedded while the ring is being assembled on the neck.