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This invention provides an artificial nipple210a. The artificial nipple comprises: a nipple portion212ahaving a first curved surface, whose tip is provided with an opening portion216a; a nipple body portion211aformed on the nipple portion212a, having a second curved surface, wherein the second curve

This invention provides an artificial nipple210a. The artificial nipple comprises: a nipple portion212ahaving a first curved surface, whose tip is provided with an opening portion216a; a nipple body portion211aformed on the nipple portion212a, having a second curved surface, wherein the second curved surface of the nipple body portion211ais continuously extended from the first curved surface of the nipple portion212a, and wherein the second curved surface of the nipple body portion211ais significantly expanded as a part of the second curved surface goes away from the nipple portion212a; and a base portion214aformed on the nipple body portion, wherein the base portion214ais capable of being attached to a container to house a drink. According to the present invention, the nipple body portion211ahas a maximum outer diameter of 30 mm or more. According to the present invention, the nipple portion212a, measured by placing the base portion214aof the artificial nipple210aon a precise universal tester having a metallic pressing top made of a cylindrical shape with a radius of about 5 mm, to compress the maximum outer diameter of the nipple portion into the direction of the center thereof, has a nipple elasticity of 0.1 N to 0.8 N when the maximum outer diameter of the nipple portion is compressed by 20%, and of 1.0 N to 2.5 N when the maximum outer diameter of the nipple portion is compressed by 60%.

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1. An artificial nipple comprising: a nipple portion having a first curved surface, whose tip is provided with an opening portion; a nipple body portion formed on the nipple portion, having a second curved surface, wherein the second curved surface of the nipple body portion is continuously ext

1. An artificial nipple comprising: a nipple portion having a first curved surface, whose tip is provided with an opening portion; a nipple body portion formed on the nipple portion, having a second curved surface, wherein the second curved surface of the nipple body portion is continuously extended from the first curved surface of the nipple portion, and wherein the second curved surface of the nipple body portion is significantly expanded as a part of the second curved surface goes away from the nipple portion; and a base portion formed on the nipple body portion, wherein the base portion is capable of being attached to a container to house a drink, wherein the nipple body portion has a maximum outer diameter of 30 mm or more, and wherein the nipple portion is composed of an elastic material having a nipple elasticity of 0.1 N to 0.8 N at the time when the maximum outer diameter of the nipple portion is compressed by 20%, and of 1.0N to 2.5N at the time when the maximum outer diameter of the nipple portion is compressed by 60%, wherein the nipple portion is measured by placing the base portion of the artificial nipple on a precise universal tester having a metallic pressing top made of a cylindrical shape with a radius of about 5 mm, to compress the maximum outer diameter of the nipple portion into the direction of the center thereof. 2. The artificial nipple of claim 1, wherein the nipple portion has a thickness in the direction of the center thereof, at the maximum outer diameter portion of the nipple portion, that is greater than or equal to 1.5 mm.3. The artificial nipple of claim 1, wherein the artificial nipple is made from silicone rubber.4. The artificial nipple of claim 1, wherein the artificial nipple includes at least one groove located on an inner surface of the nipple portion.5. The artificial nipple of claim 1, wherein the artificial nipple includes a plurality of grooves located on an inner surface of the nipple portion, the grooves being formed about a longitudinal axis of the nipple portion.6. An artificial nipple comprising: a nipple portion having a first curved surface, whose tip is provided with an opening portion; a nipple body portion formed on the nipple portion, having a second curved surface, wherein the second curved surface of the nipple body portion is continuously extended from the first curved surface of the nipple portion, and wherein the second curved surface of the nipple body portion is significantly expanded as a part of the second curved surface goes away from the nipple portion; and a base portion formed on the nipple body portion, wherein the base portion is capable of being attached to a container to house a drink, wherein the nipple body portion has a maximum outer diameter of 30 mm or more, and wherein the nipple portion is composed of an elastic material having a Durometer A hardness of 5 to 25, and wherein the nipple portion has a thickness in the direction of the center thereof, at the maximum outer diameter portion of the nipple portion, of 1.5 mm or more. 7. The artificial nipple of claim 6, wherein the artificial nipple is made from silicone rubber.8. The artificial nipple of claim 6, wherein the artificial nipple includes at least one groove located on an inner surface of the nipple portion.9. The artificial nipple of claim 6, wherein the artificial nipple includes a plurality of grooves located on an inner surface of the nipple portion, the grooves being formed about a longitudinal axis of the nipple portion.10. A feeding bottle comprising: a container to house a drink; an artificial nipple attached to the container; the artificial nipple comprising: a nipple portion having a first curved surface, whose tip is provided with an opening portion;a nipple body portion formed on the nipple portion, having a second curved surface, wherein the second curved surface of the nipple body portion is continuously extended from the first curved sur face of the nipple portion, and wherein the second curved surface of the nipple body portion is significantly expanded as a part of the second curved surface goes away from the nipple portion; anda base portion formed on the nipple body portion, wherein the base portion is attached to the container to house a drink,wherein the nipple body portion has a maximum outer diameter of 30 mm or more,wherein the nipple portion is composed of an elastic material having an elasticity of 0.1 N to 0.8 N at the time when the maximum outer diameter of the nipple portion is compressed by 20%, and of 1.0N to 2.5N at the time when the maximum outer diameter of the nipple portion is compressed by 60%,wherein the nipple portion is measured by placing the base portion of the artificial nipple on a precise universal tester having a metallic pressing top made of a cylindrical shape with a radius of about 5 mm, to compress the maximum outer diameter of the nipple portion into the direction of the center thereof; and a fixing portion for fixing the artificial nipple at the container. 11. A feeding bottle comprising: a container to house a drink; an artificial nipple attached to the container; the artificial nipple comprising: a nipple portion having a first curved surface, whose tip is provided with an opening portion;a nipple body portion formed on the nipple portion, having a second curved surface, wherein the second curved surface of the nipple body portion is continuously extended from the first curved surface of the nipple portion, and wherein the second curved surface of the nipple body portion is significantly expanded as a part of the second curved surface goes away from the nipple portion; anda base portion formed on the nipple body portion, wherein the base portion is capable of being attached to a container to accommodate a drink,wherein the nipple body portion has a maximum outer diameter of 30 mm or more, andwherein the nipple portion is composed of an elastic material having a Durometer A hardness of 5 to 25, andwherein the nipple portion has a thickness in the direction of the center thereof, at the maximum outer diameter portion of the nipple portion, of 1.5 mm or more.