초록 ▼

A non-venting valve and dispensing package for fluid products and the like includes a container of the type having an interior volume which reduces as fluid product is dispensed from the package. A self-sealing dispensing valve has a marginal portion sealing about an associated discharge opening in

A non-venting valve and dispensing package for fluid products and the like includes a container of the type having an interior volume which reduces as fluid product is dispensed from the package. A self-sealing dispensing valve has a marginal portion sealing about an associated discharge opening in the container, and a valve head with an orifice which shifts between open and closed positions in response to the application and release of pressure on and/or within the container. A vent resisting member retains the orifice in the closed position after each dispensing of fluid product from the container to prevent ambient air from being drawn back through the orifice into the container.

대표청구항 ▼

[ The invention claimed is as follows:] [1.] A non-venting dispensing package for fluid products, comprising:a container shaped to retain a selected fluid product within a predetermined volume, and having an interior wall construction configured to reduce said predetermined volume as fluid product i

[ The invention claimed is as follows:] [1.] A non-venting dispensing package for fluid products, comprising:a container shaped to retain a selected fluid product within a predetermined volume, and having an interior wall construction configured to reduce said predetermined volume as fluid product is dispensed from said package, and including a discharge opening therein;a dispensing valve for controlling the flow of the fluid product from said container, having an interior surface interfacing with the fluid product in said container, and an oppositely oriented exterior surface interfacing with ambient environment; a marginal valve portion sealing about the discharge opening of said container, and retained in a generally fixed relationship therewith; a valve head portion having an orifice which shifts centrally with respect to said marginal valve portion between an extended open position to permit fluid flow therethrough in response to a predetermined discharge pressure within said container, and a retracted closed position to shut off fluid flow therethrough upon removal of the predetermined discharge pressure; and a connector sleeve portion having a resiliently flexible construction, with one marginal end area thereof connected with said marginal valve portion, and an opposite head end area thereof connected with said valve head portion; anda vent resisting pad disposed on said exterior surface of said valve head portion adjacent said orifice, and retaining said orifice in said closed position after each dispensing of fluid product from said container to prevent ambient air from being drawn through said orifice into said container.