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US 5,791,503 AGranted
Nursing bottle with anti-air ingestion valve
OwnerRichard A. Lyonsinventor
Life of this patent
Estimating the term…
Abstract
An infant nursing bottle includes a partially sealable check valve between the top of the bottle and the feeding nipple, whereby equalizing air may enter the bottle after the suction phase while the baby pauses.
Claims20
A baby bottle with a threaded tops having assembled thereto:
- a threaded cap having a nipple therein;
- a rigid disk between said nipple and said bottle, said disk having a valve seat with at least one opening thereacross;
- a flexible valve positioned between said disk and said nipple and supported by said disk over said valve seat, said valve biased in a substantially closed position toward said valve seat;
- and
- at least one rib between said valve and said valve seat whereby in said substantially closed position said valve is prevented from fully closing, said rib defining at least one air passageway for permitting air to reenter said bottle when said valve is in said substantially closed position.
2 more elements
A baby bottle having a threaded top, a threaded cap, a nipple having a bulbous head and a flange which is sealably secured at the top by an overhanging lip portion of said cap, the improvement comprising:
- a rigid disk sealably positioned between the top of said bottle and said flange, said disk having at least one opening thereacross, a flexible valve covering said opening in one position, said valve being flexible toward said nipple to fully open said opening in a second position, and at least one rib defining at least one air passageway between said flexible valve and said rigid disk said rib to prevent fully closing of said opening when in said one position.
A bottle with a threaded end for dispensing liquid, said bottle having assembled thereto:
- a threaded cap having a nipple therein;
- a rigid disk between said nipple and said bottle, said disk having a valve seat with at least one opening thereacross;
- a flexible valve positioned between said disk and said nipple and supported by said disk over said valve seat, said valve biased in one position toward said valve seat;
- and
- at least one rib between said valve and said valve seat whereby in said one position said valve is prevented from fully closing, said rib defining at least one air passageway for permitting air to reenter said bottle when said valve is in said substantially closed position.
2 more elements
Dependencies are inferred from the claim text.