Back to results
US 3,946,888 AGranted
Artificial baby feeding
OwnerShirley Lyford Tonkininventor
Life of this patent
Estimating the term…
Abstract
Artificial baby feeding apparatus for use with a container and teat has a flow directing means in the form of a one way valve or a restriction to prevent or restrict backflow of liquid from the teat to the container. A teat having a soft toroidal distal proximal portion assists in giving a satisfactory pumping action.
Claims5
Apparatus for nursing a suckling infant comprising in combination a container for containing a liquid and having an open end through which the liquid is dispensed as the infant suckles;
- a separate cover element disposed transversely of said container's open end;
- a teat element axially above said cover element and including means through which the liquid is received by the suckling infant;
- means removably retaining the container, cover element and teat element in assembled relationship;
- means for venting the interior of said container to the atmosphere as liquid is withdrawn by the suckling infant, said cover element comprising a disc including an aperture through which liquid flows from the container to the teat element as an infant suckles, said disc including a one-way valve comprising a displaceable flap juxtaposed on the side of said disc adjacent the teat element, said flap including a valve portion normally overlying said aperture for permitting liquid to flow thereby only from the container to the nipple element and preventing reverse liquid flow back to the container from the nipple element, said means for venting the interior of said container to the atmosphere comprising an air passage means formed between cooperating portions of said container and said cover element and comprising at least one groove portion in a washer positioned between said container and said cover element.
1 more element
Dependencies are inferred from the claim text.