초록 ▼

In an aerosol type container having a pressure chamber, a product containment sack of an impervious flexible material is centrally retained. The aerosol container is provided with an annular opening defined by an annular lid curl. The lid curl is interlockingly engaged by a collar portion of the sac

In an aerosol type container having a pressure chamber, a product containment sack of an impervious flexible material is centrally retained. The aerosol container is provided with an annular opening defined by an annular lid curl. The lid curl is interlockingly engaged by a collar portion of the sack. A modified valve assembly is sealingly secured within a neck protruding from the sack collar. The sack collar acts as a one-way valve allowing a pressurizing agent to be introduced for the purpose of maintaining a desirable pressure within the container pressure chamber. The invention pertains to pressurizing, sealing and sack retainment of such dispensers.

대표청구항 ▼

In an aerosol type container or dispenser having an apertured lid and a pressure chamber, a collapsible sack containing material to be dispensed nested within said chamber and having a neck projected through and suspended from said lid; and a valve assembly nested, sealed and retained within said ne

In an aerosol type container or dispenser having an apertured lid and a pressure chamber, a collapsible sack containing material to be dispensed nested within said chamber and having a neck projected through and suspended from said lid; and a valve assembly nested, sealed and retained within said neck and projecting therefrom, the mounting of said neck within said lid including an annular flexible collar upon said neck spaced from said sack; and an annular retainer projection upon said collar retainingly extending through and interlocked with an outer portion of said lid, said collar yieldably and sealingly bearing against the inside of said lid in a relationship that upon application of a pressurizing agent to said container, said collar is displaced inwardly permitting inward passage of the agent through the lid aperture and into said pressure chamber, said collar upon interruption of the application of the pressurizing agent automatically returning to sealing engagement with said lid under the action of said agent in said pressure chamber and the flexibility of the collar preventing outward passage of the pressurizing agent.