One material, one piece spill-proof closure
First Claim
1. A spill-proof closure for a liquid container, said closure comprising an integral spout comprising a liquid exit valve region which provides a liquid passageway from the container, wherein the liquid exit valve opens upon suction from a user, said closure further comprising a means for attaching the closure to said container, wherein the entire closure comprises a single component and is manufactured in one operation.
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Accused Products
Abstract
This invention relates to a closure for a drinking container and is particularly concerned with spill-proof closures, which remain in place while drinking. The inexpensive, effective and durable closures according to this invention are suitable for both disposable and nondisposable applications where both cost and performance are important.
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Citations
20 Claims
- 1. A spill-proof closure for a liquid container, said closure comprising an integral spout comprising a liquid exit valve region which provides a liquid passageway from the container, wherein the liquid exit valve opens upon suction from a user, said closure further comprising a means for attaching the closure to said container, wherein the entire closure comprises a single component and is manufactured in one operation.
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16. A spill-proof closure for a liquid container, said closure comprising an integral spout comprising a liquid exit valve region which provides a liquid passageway from the container. an air entry valve region which provides a separate air passageway to and from the container, and a liner, wherein the liquid exit valve opens upon suction from a user, said closure further comprising an means for attaching the closure to said container. wherein the entire closure comprises a single component and is manufactured in one operation.
Specification