Metering dispensing system with one-piece pump assembly
First Claim
1. A dispensing device, comprising:
- a collapsible pouch having an interior, an exterior and an opening passing between the interior and the exterior;
a one-piece upper member having a dome button, a valve positioned within the dome button and a top portion extension extending distally from the dome button, the one-piece upper member being sealed to the exterior of the collapsible pouch about the opening to define a metering chamber, and the valve positioned to sealingly engage with the opening;
an exit pathway formed between the top portion extension and the exterior of the collapsible pouch; and
the one-piece upper member being configured to draw fluid from the pouch, through the opening and into the metering chamber;
the one-piece upper member being further configured to urge liquid through the exit pathway when the valve of the one-piece upper member is sealingly engaged against the opening in the pouch to prevent a flow of liquid therethrough.
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0 Petitions
Accused Products
Abstract
A liquid dispensing device includes a storage container having an opening and dome pump assembly attached thereto substantially over the opening for metered dispensing. The dome pump assembly is integrally formed with a dome button, top portion extension and valve to facilitate manufacture and reduce costs of the pump while improving performance thereof. The valve is employed to pull liquid from the storage container into the dome for metering. An exit passageway formed from the extension and container wall serves as an output valve. The user squeezes the dome and the opposite side of the container pouch concurrently to seal the flapper valve to urge liquid out through the exit passageway for actual dispensing.
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Citations
20 Claims
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1. A dispensing device, comprising:
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a collapsible pouch having an interior, an exterior and an opening passing between the interior and the exterior; a one-piece upper member having a dome button, a valve positioned within the dome button and a top portion extension extending distally from the dome button, the one-piece upper member being sealed to the exterior of the collapsible pouch about the opening to define a metering chamber, and the valve positioned to sealingly engage with the opening; an exit pathway formed between the top portion extension and the exterior of the collapsible pouch; and the one-piece upper member being configured to draw fluid from the pouch, through the opening and into the metering chamber;
the one-piece upper member being further configured to urge liquid through the exit pathway when the valve of the one-piece upper member is sealingly engaged against the opening in the pouch to prevent a flow of liquid therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19)
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11. A dispensing device, comprising:
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a collapsible container maintaining a material to be dispensed having an opening passing from an interior to an exterior of the collapsible container; a one-piece upper member having a dome button, a valve positioned within the dome button and a top portion extension extending distally from the dome button, the one-piece upper member being sealed to the exterior of the collapsible container about the opening to define a metering chamber, and the valve being sealingly engaged with the opening; an exit pathway formed between the top portion extension and the exterior of the collapsible container; and wherein activating forces applied concurrently to said dome button and said container activate said valve to cause passage of material from said metering chamber through said exit pathway formed by the top portion and the exterior of said container mated together, and activating forces applied to said dome button activate said valve to cause passage of material from said metering chamber into said container through said opening. - View Dependent Claims (12, 13, 14, 17, 18, 20)
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15. A method of dispensing a fluid, comprising:
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providing a collapsible container having an outer surface with an opening thereon and an interior fluid storage region therein; providing a volume of fluid within the interior fluid storage region; providing a one-piece flexible pump assembly having a valve and dome button with a top portion extension extending thereof, the valve, dome button and top portion extension; sealing the flexible pump assembly to the outer surface of the collapsible container around the opening so that the valve is positioned substantially above the opening and the top portion extension meets the outer container surface, a metering chamber being created between the flexible pump assembly and the outer surface of the collapsible container and an exit pathway being created between the top portion extension and the outer surface of the collapsible container; providing an exit port in fluid communication with the top portion extension; depressing the dome button of the flexible metering housing; releasing the dome button; filling the metering chamber with a volume of fluid by vacuum force in an amount by the volume of the metering chamber; depressing the flexible metering housing again; and urging the volume of fluid within the metering chamber through the exit port via the exit pathway. - View Dependent Claims (16)
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Specification