Patent ID: 8690023

Claim:
A dispenser, comprising: a hollow containment body insertable into a bottle and comprising an orifice for suction of liquid from said bottle; a ring nut screwable onto a neck of said bottle, comprising an annular shoulder covering and associated to an annular lip of said containment body; a piston slidable within said containment body between a raised position and a lowered position, a dispensing spout having a head and a cylindrical body that extends downwards from the head; a hollow stem axially slidable within said containment body, associated inferiorly to said piston and superiorly to said dispensing spout to command the actuation of said piston and dispense fluid contained in said bottle; a retaining ring integral with the containment body and inserted within said body to guide the stem in its travel within the containment body, and said piston, said stem and said spout travelling a distance delimited superiorly by the position of interference between the piston and the retaining ring and inferiorly by the position of interference between the stem and a valve that opens and closes the orifice of the containment body, wherein said ring nut is connected in a sealed manner to said retaining ring along an annular connecting line, said retaining ring presenting an upper portion extending beyond said connecting line towards said dispensing spout at least by a height equal to said distance, wherein the cylindrical body of the dispensing spout is mounted around the upper portion of the retaining ring in such a way that i) when the dispensing spout is in a lowered position, the cylindrical body is superposed to the upper portion of the retaining ring and completely covers said upper portion of the retaining ring, and ii) when the dispensing spout is in a raised position, the cylindrical body of the dispensing spout is superposed, at least partially, to said upper portion of the retaining ring, wherein said ring nut comprises a collar extending in elevation from said shoulder, said collar surrounding said upper portion of said retaining ring and superposing to it at least partially in the axial direction, and wherein said collar presents internally, projecting towards the centre along said annular connecting line, an annular sealing lip, said lip abutting against an annular undercut obtained externally on said retaining ring to achieve said sealed connection between said ring nut and said retaining ring.