DESCRIPTION

Field of the invention

The present invention relates to a nut for affixing a nipple to a bottom-vented baby bottle, which has means for also ensuring compatibility with a nipple having an anti-colic valve.

Discussion of the related art

In the field of baby bottles, a nipple affixed to a closed-bottom baby bottle is equipped with a special valve, conventionally known as anti-colic valve, in view of restricting air suction therefrom.

From a strictly technical and functional point of view, this valve is intended to compensate for the negative pressure generated inside the bottle as milk is being sucked by the baby by creating a passage for air between the interior of the baby bottle and the outside environment.

Conventionally, this valve is placed on the flange of the nipple by means of which it is mounted to the cover that closes the baby bottle containing the milk to be sucked.

If a nipple of the above-mentioned type is used in a milk-containing baby bottle having a vent valve at the bottom, the need arises of inhibiting the operation of the anti- colic valve located in the flange of the nipple.

Object of the Invention Therefore, the object of the present invention is to make the anti-colic valve ineffective, when the nipple with the anti-colic valve is used on a milk-containing baby bottle having a vent valve at the bottom.

This object is fulfilled by a nut for affixing the nipple to a baby bottle, characterized according to claim 1, as further described below.

Advantages of the Invention

The present invention provides a nut that can ensure compatibility of a nipple having an anti-colic valve with a baby bottle having a bottom vent valve.

LIST OF DRA WINGS

The invention will be now described in greater detail with reference to one embodiment thereof, given by way of illustration and without limitation, and shown in the annexed drawings, in which:

- Figure 1 shows a cross-sectional view of a baby bottle having a conventional vent valve at the bottom of the milk-containing bottle and a nut for affixing the nipple;

- Figure 2 shows a partial cross-sectional view of a nut for affixing a nipple having an anti-colic valve, with means for inhibiting the latter;

- Figure 3 shows a partial magnified view of the cross section of a nut for affixing the nipple, with means for inhibiting the anti-colic valve.

DETAILED DESCRIPTION

Referring to the above-mentioned drawings and in particular to Figure 1, a baby bottle is designated by numeral 1. Preferably, this bottle 1 is configured to contain milk to be administered to babies. A bottom 4 is removably connected to the lower end 2 of the bottle 1 , e.g. by means of screw threads 3.

The bottom 4 is in turn equipped with a conventional device for venting the bottle 1, generally referenced 5, which is intended to balance the pressure inside the bottle 1, as milk is being sucked by the baby through a nipple, generally referenced 6.

Still referring to Figure 1, the nipple 6 is shown affixed to the mouth 7 of the baby bottle 1 by means of a nut 8.

The nut 8 comprises a tubular sleeve 81 which extends between a lower portion 82 and an opposite upper portion 83 along an extension axis X-X.

Such nut 8 has a flange 11 with a central opening 12 for receiving the nipple 6 extending therethrough. The latter is locked against the nut 8 because the edge of the opening 12 engages in the annular groove 13 of the nipple 6.

The flange 11 projects out of the upper portion 83 of the tubular sleeve 81 toward the interior of the nut 8. In other words, the flange 11 is transverse to the tubular sleeve 81.

Preferably, the tubular sleeve 81 of the nut 8 comprises a female thread 9 configured for reversible connection with a male thread 10 of the mouth 7 of the bottle 1.

In addition, the nut 8 comprises an annular recess 15 configured for detachable connection with a protective cover 14. In other words, in order to protect the nipple 6 when not in use, the protective cover 14 is conventionally placed on top of the bottle at the annular recess 15 of the ring 8.

Referring to Figures 2 and 3, if a nipple 6 to be affixed to the bottle 1 is of the type equipped with an anti-colic valve, generally referenced 16 and formed in the flange 17 of the nipple 6, the nut 8 comprises means for inhibiting the anti-colic valve 16. These means for inhibiting the anti-colic valve 16 comprise a first annular rib 18, formed on the inner wall 19 of the flange 11 of the nut 8. This first annular rib 18 inhibits the passage of air allowed by the anti-colic valve 16.

With the nut 8 screwed onto the mouth 7, the first annular rib 18 abutting the wall of said flange 17 of the nipple 6 that faces the interior of the bottle 1, between said anti- colic valve 16 and the edge of the central opening 12 of the flange 11.

Thus, the first annular rib 18 breaks the connection between the interior of the bottle 1 and the outside environment around the nipple 6.

The means for inhibiting the anti-colic valve 16 further comprise a second rib, referenced 20 in Figures 2 and 3. This second rib 20, which is concentric with the first rib 18, provides a hydraulic seal between the flange 17 and the mouth 7.

The means for inhibiting the anti-colic valve further comprise a depression 111 interposed between the first rib 18 and the second rib 20. In operation, i.e. when the nut 8 and the nipple 6 are applied to a baby bottle 1, the depression 111 abuts against the anti- colic valve 16. In other words, in operation, the anti-colic valve 16 is interposed between the first rib 18 and the second rib 20.