Nipple for nursing bottle
First Claim
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1. A nipple for nursing bottles, comprising:
- a nipple body having a pair of openings provided at front and bottom ends thereof and including an inverted funnel-shaped intermediate portion;
at least one air valve slit provided in a vicinity of said bottom end for communicating an inside portion of said nipple to an outside portion thereof; and
a partition diaphragm provided inside of said nipple body and integral thereto and disposed in a region remote from said front and bottom ends of the nipple body in a vicinity of a boundary between said front end and said inverted funnel-shaped intermediate portion and at a position where external pressure is exerted by a mouth of an infant during feeding, said partition diaphragm including a spherical recess at a central portion thereof defining a thin diaphragm portion thereat such that said partition diaphragm is easily deformable particularly at said thin diaphragm portion,wherein said partition diaphragm has a cut through said thin diaphragm portion and forms a milk sucking passage therein, said cut being normally closed,wherein said cut is opened only when said partition diaphragm is deformed in response to said external pressure exerted by a mouth of an infant upon said nipple body during feeding.
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Abstract
A nipple (3) for a nursing bottle (1) is made from a soft elastic material, such as plastic. The nipple comprises a front end portion (7) serving as a mouthpiece, a bottle mouth fitting portion (9) to be removably fitted to the opening (5) in the bottle body (2) by a clamping ring (4), and an inverted funnel-shaped intermediate portion (8) disposed intermediate between these portions. A partition wall (11) having a milk sucking hole (12) is integrally formed in the interior.
179 Citations
7 Claims
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1. A nipple for nursing bottles, comprising:
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a nipple body having a pair of openings provided at front and bottom ends thereof and including an inverted funnel-shaped intermediate portion; at least one air valve slit provided in a vicinity of said bottom end for communicating an inside portion of said nipple to an outside portion thereof; and a partition diaphragm provided inside of said nipple body and integral thereto and disposed in a region remote from said front and bottom ends of the nipple body in a vicinity of a boundary between said front end and said inverted funnel-shaped intermediate portion and at a position where external pressure is exerted by a mouth of an infant during feeding, said partition diaphragm including a spherical recess at a central portion thereof defining a thin diaphragm portion thereat such that said partition diaphragm is easily deformable particularly at said thin diaphragm portion, wherein said partition diaphragm has a cut through said thin diaphragm portion and forms a milk sucking passage therein, said cut being normally closed, wherein said cut is opened only when said partition diaphragm is deformed in response to said external pressure exerted by a mouth of an infant upon said nipple body during feeding. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification