초록 ▼

A two piece dispenser closure, comprising a housing and an interior valve member, is molded of elastomeric plastic material for snap-on mounting on the delivery end of a tubular spout of the flexible plastic container of a liquid in bag-in-a-box packaging. The housing has a valve seat formed with an

A two piece dispenser closure, comprising a housing and an interior valve member, is molded of elastomeric plastic material for snap-on mounting on the delivery end of a tubular spout of the flexible plastic container of a liquid in bag-in-a-box packaging. The housing has a valve seat formed with an opening and a forward extension formed as a hollow compressible push button. The interior valve member has a valve body with a forward portion extending into the push button. The valve body is mounted on a normally forwardly convex annular diaphragm which retains the valve body in a seated, closed position in the housing valve seat. The diaphragm is formed with openings and is resiliently deformable to an invaginated configuration when an inward force is applied to the valve body forward portion through the push button to unseat the valve body whereby liquid flows from the tubular spout through the diaphragm openings, between the valve body and valve seat and is dispensed through the valve seat opening. Upon release of the push button, the latter and diaphragm return to normal valve closing position. In a three piece construction, the valve member has a sleeve engaging the interior surface of the tubular spout which mounts a cap in stopper fashion or a bonded puncturable disc as a seal for the inlet end of the tubular spout, the cap and disc being gas impermeable.

대표청구항 ▼

A dispenser closure of an elastomeric plastic material adapted for mounting on the delivery end of a tubular spout, 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 in

A dispenser closure of an elastomeric plastic material adapted for mounting on the delivery end of a tubular spout, 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 inwardly compressible push button, said valve member being a one piece structure comprising a rearwardly extending sleeve for mounting said tubular spout, an annular diaphragm having openings therethrough and being formed as a normally forwardly convex extension of said sleeve, a valve body extending forwardly from the center of the diaphragm and contoured to engage said valve seat to close said opening when the diaphragm is in convex configuration and having a closed end wall extension projecting into said hollow push button, said annular diaphragm being resiliently deformable into invaginated configuration by an inward axial force applied to said closed end wall through the push button to unseat said valve body whereby to permit a commodity to flow 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, 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.