Patent ID: 6412665
Filing Date: 2002-07-02
Classification: B05B,B65D

Abstract:
A container comprising:a body member for containing liquid and including a neck at one end thereof through which liquid flows on pressurization of an interior of the body member, and a closure for the body member including a cap located on the neck of the body member and having an outlet therein in a first sidewall portion for dispensing therethrough liquid flowing through the neck of the body member, and a control valve located within the cap for controlling the dispensing of liquid flowing from the body member to the outlet from the cap, the control valve being a one piece plastic moulding including a diaphragm portion and a nose portion extending from one side of said diaphragm portion, and having a rest position in which the nose portion engages in, to seal, the outlet from the cap, wherein the cap includes an annular seating for the control valve, the annular seating being formed on or mounted on a second sidewall portion of the cap opposite the first portion in which the outlet is provided, such that, on pressurization of the interior of the body member, liquid from the body member flows through the neck of the body member into the cap to engage with the one side of the diaphragm portion to distort said diaphragm portion whereby the nose portion of the control valve is displaced from the outlet and liquid is dispensed therethrough, and, on subsequent release of pressure from the interior of the body member, the control valve returns, under the influence of its inherent resiliency and atmospheric pressure, to its rest position with the nose portion thereof seating in the outlet to seal the outlet, wherein the annular seating is spaced from an interior surface of a top wall of the cap, projects inwardly of the cap from an interior surface of said second sidewall portion towards the outlet, is of a hollow, open-ended generally cylindrical shape with a central axis which extends through the outlet in the cap, and has a diameter of which is about a same magnitude as that of the diaphragm portion of the control valve, and wherein the control valve is mounted on an end of the annular seating remote from said second sidewall portion with the diaphragm portion thereof sealing said end of the annular seating and whereby the other side of the diaphragm portion remote from the nose portion is subjected to atmospheric pressure.