초록 ▼

A dispensing system is provided for being sealingly disposed with respect to, and dispensing a product from, a discharge opening of a container wherein an annular mounting flange extends radially inwardly adjacent the opening. The valve is molded from a material to define a flexible, resilient struc

A dispensing system is provided for being sealingly disposed with respect to, and dispensing a product from, a discharge opening of a container wherein an annular mounting flange extends radially inwardly adjacent the opening. The valve is molded from a material to define a flexible, resilient structure having a head portion and a surrounding marginal portion. The head portion has a normally closed dispensing orifice which opens when the pressure in the interior of the container exceeds the pressure on the exterior of the valve by a predetermined amount. The marginal portion is connected with the head portion and has a generally annular wall defining a generally annular groove which is open radially outwardly for receiving the mounting flange. The annular wall is sufficiently flexible to elastically deform as the wall is forced against the mounting flange to accommodate sealing of the mounting flange in the groove. The annular wall is sufficiently resilient to accommodate the retention of the mounting flange in the groove by adjacent portions of the annular wall.

대표청구항 ▼

[ What is claimed is:] [1.]1. A dispensing system for communicating with, and dispensing a product from, a discharge opening of a dispensing end structure on a container wherein an annular mounting flange extends radially inwardly adjacent said opening, said system comprising:a dispensing valve mold

[ What is claimed is:] [1.]1. A dispensing system for communicating with, and dispensing a product from, a discharge opening of a dispensing end structure on a container wherein an annular mounting flange extends radially inwardly adjacent said opening, said system comprising:a dispensing valve molded from at least one material to define a flexible, resilient structure having a flexible, central head portion, a sleeve extending outwardly from said flexible, central head portion, and a surrounding marginal portion;said head portion having intersecting slits that define a normally closed dispensing orifice which opens when the pressure in the interior of the container exceeds the pressure on the exterior of the valve by a predetermined amount;said marginal portion being connected with said sleeve and having a generally annular wall defining a generally annular groove which is open radially outwardly for receiving said mounting flange, said wall being (1) sufficiently flexible to temporarily deform as said wall is forced against said mounting flange to accommodate seating of said mounting flange in said groove, and (2) sufficiently resilient to accommodate the retention of said mounting flange in said groove by adjacent portions of said wall; andsaid groove being defined at a location along said annular wall to locate said sleeve and head portion within said discharge opening when said valve head portion is closed while said valve is sealingly disposed with respect to said discharge opening.