VALVE-CONTROLLED DISPENSING CLOSURE
First Claim
1. A dispensing closure for a container that holds a fluid, wherein the dispensing closure fits tightly into a container neck of the container to ensure liquid-tightness of the container, wherein the dispensing closure comprises:
- (a) a plug body configured to insert into the container neck and the plug body has a central fluid passage and a peripheral air passage;
(b) a double-valve diaphragm comprising a flexible elastic material and arranged in a recess provided in an upper part of the plug body to cover the central fluid passage and the peripheral air passage of the plug body; and
(c) a plug cap that seals the double-valve diaphragm within the plug body, wherein the plug cap has one or more slots arranged circularly and axially aligned with the peripheral air passage of the central plug body, and the plug cap has a central orifice axially aligned with the central fluid passage of the plug body,whereinthe double-valve diaphragm further comprisesa first valve section, anda second valve section, whereinthe first valve section is a normally closed valve having a slit-type central orifice and the first valve section seals the central fluid passage of the plug body when in a first resting position, andwherein the second valve section is an umbrella-type valve that is a normally closed valve and the second valve section seals the one or more slots of the plug cap when in a second resting position.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a dispensing closure for a container that holds a fluid, which can be tightly fitted into a container neck to ensure liquid-tightness of the container. The dispenser closure includes a plug body arranged to be inserted into the container neck and having a central fluid passage and having a peripheral air passage, a double-valve diaphragm comprising a flexible elastic material and arranged in a recess provided in an upper part of the plug body to cover the fluid passage and the air passage, and a plug cap sealing the double-valve diaphragm within the plug body having one or more slots arranged circularly and axially aligned with the air passage of the plug body and having a central orifice axially aligned with the fluid passage of the plug body. The double-valve diaphragm comprises a first valve section, and a second valve section.
73 Citations
18 Claims
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1. A dispensing closure for a container that holds a fluid, wherein the dispensing closure fits tightly into a container neck of the container to ensure liquid-tightness of the container, wherein the dispensing closure comprises:
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(a) a plug body configured to insert into the container neck and the plug body has a central fluid passage and a peripheral air passage; (b) a double-valve diaphragm comprising a flexible elastic material and arranged in a recess provided in an upper part of the plug body to cover the central fluid passage and the peripheral air passage of the plug body; and (c) a plug cap that seals the double-valve diaphragm within the plug body, wherein the plug cap has one or more slots arranged circularly and axially aligned with the peripheral air passage of the central plug body, and the plug cap has a central orifice axially aligned with the central fluid passage of the plug body, wherein the double-valve diaphragm further comprises a first valve section, and a second valve section, wherein the first valve section is a normally closed valve having a slit-type central orifice and the first valve section seals the central fluid passage of the plug body when in a first resting position, and wherein the second valve section is an umbrella-type valve that is a normally closed valve and the second valve section seals the one or more slots of the plug cap when in a second resting position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification