Dispenser closure

A dispenser closure for a tubular spout having an inlet end mounted on and communicating with a liquid container and an opposite delivery end, the dispenser closure being molded of an elastomeric plastic material adapted for snap-on mounting on said delivery end and including a sleeve fitting the interior of the tubular spout, said sleeve terminating in an inner end located adjacent said tubular spout inlet end, a gas impermeable sealing means attached to said sleeve inner end as a barrier within said spout at said inlet end, said dispenser closure comprising a housing extending forwardly from said spout delivery end formed as a valve seat having a valve opening and a hollow compressible push button projecting forwardly of said valve opening, said housing, except for said valve opening, completely closing said tubular spout delivery end, said housing having a sleeve of a diameter for fitting the exterior of the tubular spout, and a one piece valve member mounted within said housing and having a forwardly extending valve body normally closing said valve opening and having an end portion extending into said hollow push button, said valve member including said sleeve which rearwardly extends from a resilient diaphragm, with openings therein, forming part of the valve member, between said valve body and said sleeve, said valve member sleeve being concentrically spaced from said housing sleeve and defining a space therebetween in which said tubular spout is adapted to be received, said valve body being movable rearwardly by inward compression of said push button and having operating means, operable on rearward movement of said valve member, to open said valve opening and simultaneously remove said gas impermeable sealing means as as barrier enabling liquid from said container to flow through said spout to be dispensed through said valve seat opening, said valve body returning to said normally closed position upon release of said push button, the liquid from said container being available in said spout for subsequent dispending through said valve opening by inward compression of said push button.

A dispenser closure for a tubular spout having an inlet end mounted on and communicating with a liquid container and an opposite delivery end, the dispenser closure being molded of an elastomeric plastic material adapted for mounting on said delivery end and comprising a housing enclosing a valve member, said housing having a valve seat formed with an opening to the exterior and a forward extension beyond said opening formed as a hollow compressible push button, said valve member having a sleeve fitting the interior of the tubular spout, an annular diaphragm having openings therethrough and being formed as a forward extension of said sleeve molded to assume a normally convex configuration, a valve body extending from the center of the diaphragm contoured to engage said valve seat to close said opening when the diaphragm is in said convex configuration and having a closed end wall extension projecting into said hollow push button, said valve member sleeve terminating in an inner end located adjacent said tubular spout inlet end, a gas impermeable sealing means formed as a cap for said sleeve inner end and providing a barrier within said spout at said inlet end, said valve member having operating means operable on inward movement of said push button to dislodge the cap, inward movement of the push button also resiliently deforming said annular diaphragm into an invaginated configuration by an inward axial force applied to said closed end wall through the push button to unseat said valve body and simultaneously dislodge by said operating means said cap from said sleeve and tubular spout whereby liquid in said container fills said spout and flows through said openings in the diaphragm, between said valve body and valve seat and through said valve seat opening to the exterior, said housing having a sleeve of a diameter for fitting the exterior of the tubular spout, and interengaging flange and groove means medial of said housing and valve member sleeves for retaining said housing in assembly with said valve member and cap for removal and replacement as a unit on said tubular spout during liquid filling.

A dispenser closure comprising a housing of an elastomeric plastic material enclosing and operatively connected with a valve member of unitary construction and also of an elastomeric plastic material, said housing having a valve seat formed with an opening and a forward extension beyond said opening formed as a hollow inwardly compressible push button, said valve member comprising an annular resilient diaphragm, with openings therethrough, having a normally convex shape in a forward direction, a valve body integral with said resilient diaphragm, extending forwardly therefrom and having an outer surface configuration to engage the valve seat to close said opening when the diaphragm is in its normal convex configuration, said valve body having a closed end wall projecting into said hollow push button, said valve member further having a sleeve rearwardly extending from said diaphragm, said annular diaphragm being resiliently deformable into an invaginated configuration by an axial inward force applied to said closed end wall through the push button to unseat said valve body, said diaphragm, due to its resiliency, returning to its convex configuration on release of the actuating force on said push button, said housing having a sleeve coaxially related to and spaced from the valve member sleeve to define a space in which a tubular filling spout is adapted to be received, and interengaging flange and groove means medial of said housing and valve member sleeves for retaining said housing in assembly with said valve member for removal and replacement as a unit on said tubular filling spout.

A dispenser closure including an inlet and outlet for fluids, and valve means to control the flow of fluid from said inlet to said outlet, said valve means comprising a housing including an outer valve portion providing a fixed valve seat of predetermined shape and a valve actuation part at its forward end and a sleeve at its rear end, and an inner valve portion having a surface of a shape complementary to that of said fixed valve seat for normal sealing engagement therewith, said inner valve portion being movable between a valve closing position wherein said surface is in pressure contact with said fixed valve seat and a valve opening position wherein said surface is at least in part spaced from said fixed valve seat to allow fluid to pass therebetween from said inlet to said outlet, said inner valve portion being resiliently deformable by inwardly applied pressure to said valve actuation part to move said surface froms its valve closing position to its valve opening position, said inner valve portion being an integrally molded inner member comprising a forwardly extending valve body, a rearwardly extending sleeve and a resilient diaphragm, with openings therein, between the forwardly extending valve body and the rearwardly extending sleeve of the inner member for isolating inwardly directed forces on the valve body from said sleeve, said sleeve being adapted to mount a spout, said housing sleeve surrounding the valve body sleeve and adapted to receive therebetween a filling spout, said housing having a radial flange medial of said housing sleeve and adjacent thereto serving as a manipulating means for automatic packaging machinery.