MXPA98000913A - Bibe - Google Patents

Abstract

The present invention relates to a bottle adapted to be filled with liquid, characterized in that the bottle prevents a vacuum from forming inside the bottle when it is inverted, the bottle comprising: a container having an open upper part and which is adapted for contain a quantity of liquid, a ventilation unit adapted to fit within the container, which comprises a reservoir tube having portions and bottom, the reservoir tube has a first end adapted to fit adjacent to the upper part of the container and a second open end projecting downwardly enough in the container, so that when the bottle is reversed the second open end is above the level of liquid in the container, and an air duct in the ventilation unit extended between the part outside of the container and a point in the reservoir tube above the level of the liquid contained in the reservoir tube, when the bottle is invier

Description

FEEDING BOTTLE RECIPROCAL REFERENCE TO RELATED APPLICATION This invention is a continuation in part of the US application Serial No. 08 / 511,590 by Craig E. Brown and Robert J. Brown, the disclosure of which is hereby incorporated by reference.

FIELD OF THE INVENTION This invention relates to baby bottles. More particularly, this invention relates to bottles having a vent hole to prevent the creation of a vacuum within the bottle that could make it more difficult for an infant to suck fluid from the bottle.

BACKGROUND OF THE INVENTION Babies are born with the instinct to suck milk from their mothers breast, but it is often necessary for them to drink fluids from other sources. Babies are unable to drink liquids from cups or cups without spilling, so it is common for everyone to give fluids to babies in REF: 26781 baby bottles, also known as baby bottles. A bottle is characterized by a rubber pacifier with a small hole in its tip, secured through an opening in the upper part of a liquid container. A bottle is used to fill the container with liquid, secure the pacifier, invert the bottle and place the pacifier in the baby's mouth. The baby then sucks on the pacifier to extract the liquid. A conventional baby bottle is hermetically sealed, except for the small opening in the pacifier. Like baby bottles, the volume of liquid inside the bottle decreases and the volume of air increases. However, the ambient air is unable to enter the bottle so that a partial vacuum is created inside the bottle. The partial vacuum, in turn, prevents the flow of liquid out of the pacifier and forces the baby to suck harder to extract the liquid. As the baby sucks harder on the pacifier, the ambient air inadvertently and inevitably enters the baby's mouth and stomach. Excessive air in the stomach and other parts of the alimentary canal causes colic, a condition characterized by discomfort and abdominal pain. See, in general O.P. Mathew, Sci en ce of Bo t t l e Feeding, The Journal of Pediatrics, October 1991, 511; and W.R. Treem, Infan t Col i c, Pediatric Clinics of North America, October 1994, 1121. Many attempts have been made to provide a bottle with a vent hole to allow ambient air to enter the container during use. For example, Roderick, US Patent No. 598,231, issued February 1, 1898, describes a bottle having a U-shaped air tube. One end of the tube communicates with the upper part of the interior of the container while the other Extreme communicates with the ambient air outside the bottle. When the bottle is inverted, the liquid rises inside the tube and prevents the flow of air inside the container. If the bottle is placed vertically, quickly, the liquid in the tube does not have the opportunity to drain and remains in the tube. When the bottle is inverted again, the liquid spills out of the end of the tube that communicates with the ambient air. Other baby bottles with ventilation holes are described in Van Cleave, US Patent No. 927,013, issued July 6, 1909; Davenport, U.S. Patent No. 1,441,623, issued January 9, 1923; and Perry, US Pat. No. 2,061,477, issued November 17, 1936. None of these bottles completely solves the problem of ventilation of the interior of the bottle at atmospheric pressure while preventing leakage and spillage. Therefore, there is still a demand for a bottle that prevents the formation of a partial vacuum in the bottle during feeding and even resists spills.

BRIEF DESCRIPTION OF THE INVENTION The bottle of the present invention provides a bottle that prevents the formation of a partial vacuum within the bottle during feeding, and even resists spills. The bottle is easy to clean and prevents the formation of a partial vacuum without requiring obturators.

In addition, one embodiment of the present invention provides a bottle having a ventilation unit that is adapted to fit within the bottle. In general, the bottle of the present invention comprises a container adapted to contain a quantity of liquid and having an opening in its upper part for the reception of a pacifier; a ventilation unit adapted to fit within the container comprising a ventilation tube having an upper and lower portion, the ventilation tube having an open end that projects sufficiently downward into the container, a conduit for air in the container, Ventilation unit that extends between the outside of the container and a point in the ventilation tube above the level of the liquid trapped in the ventilation tube when the bottle is inverted, the lower portion of the ventilation tube having a smaller volume than that of the upper portion so that, when the container is filled with liquid and inverted, the liquid in the lower portion only partially fills the upper portion, and the air duct and ventilation tube allow atmospheric air to flow inside the bottle to prevent the formation of a vacuum inside the bottle when the liquid is extracted. Therefore, the fluid continues to flow freely through the pacifier and the baby that is fed from the bottle is much less likely to swallow air and develop colic. The bottle of this invention completely eliminates the possibility of leaks and spills when used properly and is easy to clean.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view with the separate parts, in perspective, of a bottle embodiment of this invention; Figure 2 is an elevational, sectional view thereof; Figure 3 is a sectional view taken along plane 3-3 of Figure 2; Figure 4 is a sectional view taken along the plane 4-4 of Figure 2; Figure 5 is a sectional view, similar to that shown in Figure 2, but with the bottle in the feeding position, inverted; Figure 6 is an elevation, sectional view of a second embodiment of the bottle of this invention; Figure 7 is a sectional view taken along the plane 7-7 of Figure 6; Figure 8 is a sectional view taken along the plane 8-8 of Figure 6; Figure 9 is a sectional view, similar to that shown in Figure 6, but with the bottle in the feeding position, inverted; Figure 10 is an elevational, sectional view of a third embodiment of the bottle of this invention; Figure 11 is an elevation, sectional view of a fourth embodiment of the bottle of this invention; Figure 12 is a perspective view of a fifth embodiment of a baby bottle constructed in accordance with the principles of this invention; Figure 13 is a front plan view of the bottle of the fifth embodiment; Figure 14 is a front, sectional, plan view of the bottle of the fifth embodiment; Figure 15 is an elevational, sectional view of the bottle of the fifth embodiment shown in the feeding position, inverted; Figure 16 is a schematic, perspective view of the bottle of the fifth embodiment; and Figure 17 is a perspective view of a sixth embodiment of a baby bottle constructed in accordance with the principles of this invention; Figure 18 is a front plan view of the bottle of the sixth embodiment; Figure 19 is a front, sectional, plan view of the bottle of the sixth embodiment; Figure 20 is an elevational, sectional view of the bottle of the sixth embodiment shown in the feeding position, inverted; Figure 21 is a schematic view with the separated parts, in perspective of the bottle of the sixth embodiment; and Figure 22 is a plan view of the bottom of a vent lid of the bottle of the sixth embodiment. The corresponding reference numbers indicate the corresponding parts in all the drawings.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES This invention is better understood by reference to the drawings. Figures 1-5 show the first embodiment of the bottle 100 of this invention. The bottle contains three components, a container 110, a liquid reservoir duct 120, and an air duct or flange 130. Each of these three components is discussed below. All three components are separated and have quality of dismantling and reassembly for easy cleaning. A conventional pacifier cap 500 is shown in phantom lines in Figures 1, 2 and 5. Although the pacifier cap is not part of the bottle of this invention, it is attached to the bottle before use. The pacifier cap includes a portion of rubber or silicone 510 that contains one or more small holes 511 at its tip through which the liquid flows when the baby sucks. The pacifier cap also includes a collar portion 520 with internal threads for attachment of the pacifier cap to the bottle. The term "pacifier" is used herein, as the context requires, to refer to the rubber portion of a pacifier lid, to the complete pacifier lid, and to any type of the limb with a limited opening, designed to be kept inside the mouth during use. The container is adapted to maintain a quantity of liquid 140 in its bottom and an amount of air 150 in its upper part when it is in the vertical position. As discussed more fully, subsequently, the level of liquid in the container does not exceed a predetermined level. In Figure 1, the maximum liquid level is shown by line 111 permanently marked on the side of the container. This marked line is typically at or approximately the point of communication between the liquid conduit and the reservoir. An air space exists above the liquid. The container is typically cylindrical in shape, that is, it has a height several times greater than its diameter. The container, preferably, has a diameter of about 3 to 8 cm so that it can be easily held by the small hands of the babies. If desired, separable or permanent handles are added to the container. The container preferably is round for all or most of its circumference. In the first embodiment shown in Figures 3 and 4, the container is circular in cross section, along approximately three-quarters of its circumference. The other quarter of the circumference is relatively flat. In contrast, other modalities are circular or polygonal in cross section for most of their heights. The container has a threaded neck 112 adapted to receive a standard pacifier cover. The neck is typically located at or around the radial center of the container (as seen from the top). The container has an internal volume of about 0.05 to 1 liter and is constructed of a rigid or semi-rigid material such as glass or plastic. Suitable plastics include polypropylene, polycarbonate and polyethylene (both low density and high density). Preferably, the container has some means to visually determine the level of the liquid. The container is preferably transparent or translucent so that the level of the liquid can be observed through the container. Alternatively, the container may be opaque and include a slit or a series of openings through which the interior may be observed. The first embodiment shown in Figures 1-5 contains a projecting portion 113 at its bottom. A tube 114 ascends from and communicates with, the projecting portion. The tube has a height of approximately 1-2 cm and a diameter of approximately 0.5 to 1 cm. As discussed later, the tube can be considered an extension of the liquid conduit when the components are assembled. Another component of bottle modalities one to four, shown in Figures 1-11, is the liquid reservoir conduit. Although the liquid reservoir duct is molded as an individual piece, it is best considered as two separate elements - a liquid conduit 121 and a reservoir 125. When the bottle of the first four embodiments, shown in Figures 1-11, is mounted for use, the liquid ducts-reservoirs are adjusted in the tube of the containers by a friction adjustment. The friction adjustment is sufficient to provide a seal and thereby prevents the liquid from escaping. More specifically, the liquid conduit starts at a point 122 near the bottom of the container, i.e., within about 1 to 5 cm of the bottom. This point is preferably in the air space of the container when inverted, as best seen in Figure 5. The other end 123 of the liquid conduit communicates with the bottom of the reservoir. In this way, when the bottle is vertical and contains liquid, the liquid enters the duct and reaches the same level as in the container. The primary purpose of the vertical liquid conduit is to provide a portion of a passage for ambient air in the container when the bottle is inverted and liquid contents must be drawn through the pacifier. Accordingly, the cross-sectional area of the liquid conduit needs not to be very large, an area of approximately 5 to 75 square mm is suitable. While not critical or decisive for this invention, the liquid conduit of the preferred embodiment is tapered inward from the top to the bottom. This taper facilitates the flow of liquid in the tank by minimizing capillary action when the bottle is inverted. The deposit is located such that substantially all its volume is above the liquid level, maximum. In the embodiment shown in Figures 1-5, the reservoir is adjacent to the air space in the upper part of the container. This location ensures that the reservoir is substantially free of liquid when the container is filled with liquid and in the vertical, straight position. The reservoir retains liquid from the liquid conduit and thereby prevents the liquid from escaping through the open end of the air conduit. The volume of the reservoir is greater than the volume of the liquid conduit so that, when the bottle is inverted, any liquid can be held in the conduit and while maintaining an air gap. Although there is no maximum size for the reservoir, the reservoir preferably has a volume of less than about one-fourth the volume of the reservoir. The reservoir communicates with the liquid conduit at a point at or above the level of the liquid in the container and the conduit. If the level of the liquid is substantially above this communication point, there is a danger that the reservoir may contain too much liquid when the bottle is inverted and, as a result, the liquid could spill out of the open end of the air conduit. The communication point between the liquid conduit and the reservoir is sufficiently large and formed to ensure that any liquid flows down the liquid conduit, when the bottle is inverted it enters the reservoir. The shape of the deposit is not critical or decisive, provided that it decreases or tapers down to the liquid conduit so that little, if any, liquid is retained in the reservoir when the bottle is returned to the straight position. In the first embodiment shown in Figures 1-5, the deposit is pear-shaped. However, other shapes, such as spherical and cylindrical, are also suitable. A threaded neck 126 is located in the upper part of the tank to join it to the air-flange duct. The duct-air flange is another component of the bottle. The portion of the flange 131 is adapted to fit over the threaded neck of the container. The flange is secured in position when the pacifier cap is tightly screwed into the threaded neck. The air duct-flange has a projecting shoulder 132 extending outside and above the liquid reservoir duct. A member 133 with internal threads descends from the shoulder and is adapted to engage with the threaded neck at the top of the reservoir. Two prongs or projections 134 preferably extend downward on either side of the member. When the bottle is mounted, the pins or projections are butted together or assembled against the container, as shown in Figure 3. Although not essential, the pins help secure the air duct-flange and the liquid-reservoir duct in position at the restrict any lateral movement. The air duct 135 descends in the center of the tank. The air duct has openings at each of its ends. The upper opening 136 is located in the shoulder portion and communicates with the ambient air. The opening of the bottom 137 is located near the bottom of the duct and is located so that it is in the air space of the tank when the bottle is inverted, as seen in Figure 5. It can be seen that the bottom opening in locates preferential shape at a point radially outward of the air duct to minimize the possibility of liquid entering the air duct when the bottle is reversed. A fifth embodiment of this invention is shown in Figures 12-16. The bottle 600 of this fifth embodiment comprises a conventional container 602, having an open top 604, surrounded by a threaded neck 606. The bottle 600 also includes a conventional pacifier 608 that can be secured with a ring-shaped, threaded collar 610 to the container. However, the bottle 600 also comprises a ventilation unit 612 interposed between the container 602 and the pacifier assembly 608-collar 610. The ventilation unit 612 comprises a reservoir tube 614 having a first end adjacent to the upper part of the bottle. the bottle 600, and a second open end projecting sufficiently downward in the container that when the bottle 600 is reversed, the second end is above the level of the liquid in the inverted container. Ventilation unit 612 further comprises a spacer or vent insert 616 which connects between reservoir tube 614 and pacifier 608. Ventilation separator 616 prevents liquid from entering a conduit for air while allowing air to flow from the reservoir tube 614 through the air passage. The separator or insert 616 includes curved slots 620 to allow liquid to flow through the separator or insert from the interior of the container 602 to the sucker 608. The air duct of the ventilation unit 618 extends between the outlet of the bottle 600 and a point in the reservoir tube 614 above the level of the liquid trapped inside the ventilation tube when the bottle 600 is reversed. In this way, the air duct 618 and the end of the reservoir tube 614 connect the air space that is formed on the liquid when the bottle is inverted with the atmosphere, thereby preventing the formation of a partial vacuum within the the bottle as the liquid is extracted through the pacifier. As best shown in the figures, the upper portion 622 of the reservoir tube 614 preferably has a cross-sectional area, much larger than the lower portion 624, to more easily accommodate the liquid trapped in the lower portion of the reservoir tube. ventilation when bottle 600 is reversed. The ventilation unit 612 has a threaded collar 626 for securing the unit in the threaded neck 606 of the container 602. The upper part of the unit 612 has external threads 628 in which the conventional collar 610 and the pacifier 608 can be secured. passage extends from an opening in the side of the ventilation unit 612 to the ventilation tube 630 projecting downward in the upper portion 622 of the reservoir tube 614. The ventilation tube 630 projects sufficiently in the upper portion 622 of the reservoir tube 614 so that the distal end of the vent tube is above the level of the liquid that is trapped in the reservoir tube when the bottle 600 is reversed. There is an opening 632 at the distal end of the ventilation tube. The opening is quite small, and is preferably on the side of the ventilation tube, to help prevent the liquid from escaping through the air duct 618. In use, the container 602 is filled with a liquid and the ventilation unit is inserted. in the container, and screwed into the threaded neck 606 of the container. The ring-shaped collar 610 and the pacifier 608 are then screwed into the ventilation unit 612. As shown in Figure 15, when the 600 mounted bottle is reversed so that an infant can suck the pacifier liquid, some of the liquid is trapped in the reservoir tube 614, and this liquid flows to the upper portion 622 of the reservoir tube. Due to the size of the upper portion 622 of the reservoir tube, and the length of the tube. ventilation 630, the upper end of the ventilation tube, and in particular the opening 632 at the lower end of the ventilation tube, is above the liquid level trapped in the reservoir tube, inverted. In this way, there is an air path, continuous from outside the bottle through a ventilation tube and through a lower portion of the reservoir had to the air space in the upper part of the bottle. This allows the atmospheric air to replace the volume of fluid sucked through the pacifier, which prevents the creation of a partial vacuum that would make it difficult for the infant to extract the fluid from the bottle. A sixth embodiment of the bottle of this invention, generally indicated as 700, is shown in Figures 17-22. The bottle 700 includes a container 702 having an open top 704 surrounded by a threaded neck 706. The bottle 700 also includes a conventional sucker 708, which can be secured with a ring-shaped collar, threaded 710. A ventilation unit 712 is interposed between the upper part of the neck and the pacifier, and extends into the container 702. The ventilation unit 712 comprises a separator or vent insert 714, a reservoir tube 716 depending on the separator or insert, and a tube of ventilation 718 that depends on the separator or insert inside the reservoir tube. The spacer or insert 714 generally comprises a cylindrical, side wall 720 having a flat, circular, upper surface 722 against which the pacifier 708 can be sealed, and a circumferential notch 724 at the bottom of the side wall, adapted for coupling and sealing with the upper part of the neck 706 of the container. There are curved slots 726 in the separator or insert 714 that allow liquid to flow through the separator or insert from inside the container 702 to the sucker 708. A hollow conduit 728 extends diatrically through the separator or insert 714, which communicates with the openings 730 on the outside of the side wall 720. There is a tubular extension 732 that depends on the underside of the separator or insert 714. The extension 732 is within the curved grooves 726, so that it does not interfere with the flow of the liquid through the slots in the separator or insert. The extension 732 is internally threaded. There is an opening 734, in general, at the bottom of the separator or insert 714, within the extension 732, which communicates with the conduit 728. The reservoir tube 716 has an upper section 736 and a lower section 738. The upper portion of the upper section 736 is externally threaded to engage the inner cords in the extension 732. The reservoir tube 716 extends downwardly within the container 702 sufficiently, so that when the bottle 700 filled with liquid is inverted, the lower end open of the reservoir tube is above the level of the liquid in the inverted bottle. The upper section 736 has a cross-sectional area, larger than the lower section so that the upper section can easily accommodate the volume of fluid that the lower section can maintain. The vent pipe 718 comprises a cylindrical section, cut 740 having a large annular rim 742 at its upper end 744, and a closed, rounded lower end 746. The vent tube 718 fits into the extension 732, with the upper end of the reservoir tube 716 holding the flange 742 against the bottom of the separator or insert, and thereby sealing the vent tube against the bottom of the separator or insert 714. There is a small opening 748 at the lower end 746 of the vent tube 718, preferably on the side of the ventilation tube adjacent to the bottom. The vent tube 718 projects sufficiently into the reservoir tube 716 so that when the bottle 700 filled with liquid is inverted, the lower end 746 of the ventilation tube, and more specifically the aperture 748, is above the level of the trapped liquid in the reservoir tube 716. In this way, the ventilation unit 712 provides a conduit for the air between the outside of the bottle and a point in the reservoir tube that is above the level of the liquid trapped in the reservoir tube when the bottle is reversed. However, the vent tube 718 is preferably not projecting too much that is below the level of the liquid in the reservoir tube 716 when the bottle 700 is vertical. The ventilation unit 712 provides air to the inner bottle 700 so that when an infant sucks liquid from the bottle, the volume is replaced, which prevents the creation of a partial vacuum within the bottle which would make it increasingly difficult for the infant to suction of the liquid from the bottle. In operation, the ventilation unit 712 is assembled by placing the upper end of the vent tube 718 in the extension 732, and then screwing or inserting the upper threaded portion of the upper section 736 of the reservoir tube 716 into the internal cords in the extension 732. The container 702 is filled with a liquid, such as water, juice or milk. The separator or vent insert 714 is then placed on top of the neck 706 of the container, with the sample 724 seating against and sealing with the top of the neck. The pacifier 708 is placed over the top of the spacer or insert 714 and the collar 710 is screwed or inserted into the neck cords 706 to compress the pacifier against the circular base in the spacer or insert, and to compress the spacer or insert against the upper part of the neck. The infant can easily suck the liquid into the bottle through the pacifier, the liquid flowing freely through the slots 726 in the separator or insert inside the container. When the bottle is inverted to extract liquid through the pacifier, some liquid is trapped in the reservoir tube 716. This liquid flows in the upper section 736. Due to the relative sizing of the upper section 736 and the lower section 738, and the length of the ventilation tube 718, the end of the ventilation tube is above the level of the liquid trapped in the reservoir tube 716, which provides an air path, continuous from the outside of the bottle to the air space above the liquid in the inverted bottle. As the liquid is sucked from inside the container, it is replaced with air passing between the threaded collar 710 and the cords or threads on the neck 706, through the openings 730 in the air duct 728, and from there through the opening 734 in the ventilation tube 718 through the opening 748 at the end of the ventilation tube, and through the reservoir tube 716 to the air space above the liquid in the inverted bottle. This prevents the formation of a vacuum in the bottle.

In operation, the bottle of this invention is assembled to provide a container that prevents the formation of a vacuum within the container when the liquid is removed during use. In the first embodiment, the liquid reservoir duct is attached to the air duct-flange by screwing the threaded neck 126 into the descending member 133. These two components are then connected to the container by sliding the flange down and over the neck of the neck. container 112 while simultaneously being guided to the liquid conduit in tube 114. The container is then partially filled with liquid. The level of liquid must not substantially exceed the filling line, marked, that is, the point of communication between the liquid conduit and the deposit. As discussed previously, if the level of liquid substantially exceeds the point of communication, there is a danger that liquid will spill out of the opening when the bottle is inverted. In Figure 2, the liquid level is approximately 5 mm below the communication point. The pacifier is then secured to the container and the bottle is ready for use.

When the bottle is reversed, the liquid reservoir is maintained in an upward facing position, as seen in Figure 5. This position ensures that: (1) all liquid from the liquid conduit flows into the reservoir; (2) no additional liquid enters the conduit; and (3) the ambient air is free to enter the interior of the container as it flows through the air conduit, the air space in the reservoir, and the liquid conduit. In this way, a vacuum is prevented from forming inside the bottle during use and the baby that is fed from the bottle is not forced to suck too hard to inadvertently swallow air. As a result, the chances of colic are greatly reduced. A second embodiment of the bottle of this invention is shown in Figures 6-9. Bottle 200 contains the same components and works the same as the preferred embodiment, but differs from the preferred modality in two primary forms. First, this mode can not be disassembled for cleaning. Second, the liquid conduit 221, the reservoir 225 and the air conduit 235 are all located within the container 210. With reference to Figure 9, it can be seen that it is very important that the liquid-air conduit-reservoir conduit face up when the bottle is reversed, so that the liquid does not flow into the air duct. If the bottle were incorrectly inverted, the liquid would flow down the air duct and spill through the opening 235. Figure 10 illustrates a third embodiment of the bottle of this invention. The 300 bottle is very similar to the bottle shown in Figures 6-9. The primary difference is that the air duct 335 is simply an opening in the upper wall of the container. A fourth embodiment of the bottle of this invention is shown in Figure 11. This bottle 400 differs from the second and third embodiments in that the liquid conduit 421, the reservoir 425, and the air conduit 435 are all outside the container 410. However, these are connected to the container. Figures 12-16 illustrate a fifth embodiment of the bottle of this invention. The bottle 600 differs from the first to the fourth modes in that the ventilation unit 612 is interposed between the container 602 and the collar 610 and the pacifier 608 without having extensions protruding out of the bottle. A sixth embodiment of the bottle of this invention is shown in Figures 17-22. The bottle includes a container 702 having an open top 704 surrounded by a threaded neck 706. The bottle also comprises a ring-shaped collar 710 adapted to secure a conventional pacifier 708 in the container. The bottle also comprises a ventilation unit 712 interposed between the upper part of the neck and the pacifier, and extends into the container 702. When the container is reversed, the liquid from the lower portion of the ventilation unit 712 flows into the portion higher and no additional liquid enters the ventilation unit. In this way, the atmospheric air is free to enter the container as it flows from the outside of the bottle through the ventilation unit 712. In this way, a vacuum is prevented from forming inside the container during use and the baby that is fed from the bottle is not forced to inadvertently swallow air so that the chances of colic are reduced.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates.

Having described the invention as above, property is claimed as contained in the following:

Claims (21)

1. A bottle adapted to be filled with liquid and covered with a pacifier, whose interior remains at atmospheric pressure when the bottle is inverted during use, the bottle is characterized in that it comprises: (a) a vertical container having a mark defining a plane horizontal in an upper half of the container, the container that is adapted to hold a quantity of liquid that does not exceed the mark, the container having an air space above the liquid and the container having a first radially central opening in its upper part for the reception of a pacifier; (b) a reservoir that has a volume smaller than the volume of the container and that is located such that substantially all of its volume is above the mark in the container; (c) a vertical liquid conduit from a point near the bottom of the container to the bottom of the reservoir, the liquid conduit having a volume less than that of the reservoir so that, when the bottle is filled with liquid and inverted, the liquid in the liquid conduit only partially fills the tank and an air space remains in the tank; and (d) an air duct from outside the bottle to a point in the tank where the air space exists when the bottle is filled with liquid and inverted; such that, when the bottle is filled with liquid and adjusted with a pacifier, the level of liquid in the container and in the liquid conduit are the same; and also such that, when the bottle is reversed, liquid from the liquid conduit flows into, and remains in, the reservoir for as long as the bottle is inverted and an open air passage is established through the air-reservoir conduit. -conduit of liquid to take the ambient air inside the container and with which to maintain the atmospheric pressure.

2. The bottle according to claim 1, characterized in that the reservoir is located adjacent to the air space in the upper part of the container.

3. The bottle according to claim 2, characterized in that the reservoir has a volume greater than the volume of the liquid conduit.

4. The bottle according to claim 3, characterized in that the liquid conduit and the reservoir are located inside the container.

5. The bottle according to claim 3, characterized in that the liquid conduit and the reservoir are located outside the container.

6. The bottle according to claim 5, characterized in that the liquid conduit and the reservoir can be separated from the container.

7. A bottle adapted to be filled with liquid and covered with a pacifier, whose interior remains at atmospheric pressure when the bottle is inverted during use, the bottle is characterized because it comprises: (a) a container adapted to contain a quantity of liquid in its bottom and having an air space in its upper part, the container having a first radially central opening in its upper part for the reception of a pacifier; (b) a localized deposit such that substantially all of its volume is above the level of liquid in the container; (c) a vertical liquid conduit from a point near the bottom of the container to the bottom of the reservoir, the liquid conduit having a volume less than that of the reservoir so that, when the bottle is filled with liquid and inverted, the fluid from the liquid conduit only partially fills the tank and an air space remains in the tank; and (d) an air duct from outside the bottle to a point in the tank where the air space exists when the bottle is filled with liquid and inverted; such that, when the bottle is filled with liquid and adjusted with a pacifier, the level of liquid in the container and in the liquid conduit are the same; and also such that, when the bottle is reversed, liquid from the liquid conduit flows into, and remains in, the reservoir for as long as the bottle is inverted and an open air passage is established through the air-reservoir conduit. -conduit of liquid to take the ambient air inside the container and with which to maintain the atmospheric pressure.

8. The bottle according to claim 7, characterized in that the reservoir is located adjacent to the air space in the upper part of the container.

9. The bottle according to claim 8, characterized in that the reservoir has a volume greater than the volume of the liquid conduit.

10. The bottle according to claim 9, characterized in that the liquid conduit and the reservoir are located inside the container.

11. The bottle according to claim 9, characterized in that the liquid conduit and the reservoir are located outside the container.

12. The bottle according to claim 11, characterized in that the liquid conduit and the reservoir can be separated from the container.

13. A bottle adapted to be filled with liquid, wherein the bottle prevents a vacuum from forming inside the bottle when it is inverted, the bottle is characterized in that it comprises: a container that has an open upper part and that is adapted to contain an amount of liquid; a ventilation unit adapted to fit within the container comprising a reservoir tube having an upper and lower portion, the reservoir tube having a proximal first end, adapted to fit adjacent to the upper part of the container and a second end open that projects far enough down into the container so that when the bottle is reversed, the second open end is above the level of the liquid in the container; and a duct for the air in the ventilation unit that extends between the outside of the container and a point in the reservoir tube above the liquid level trapped in the reservoir tube when the bottle is reversed.

14. The bottle according to claim 13, characterized in that the ventilation unit includes a ventilation tube, in communication with the air duct, having a distal end, the ventilation tube projecting inside the reservoir tube sufficiently so that the distal end of the ventilation tube is above the level of liquid trapped in the reservoir tube when the bottle is inverted.

15. The bottle according to claim 13, characterized in that the ventilation unit further comprises a separator or insert that secures the reservoir tube.

16. The bottle according to claim 13, characterized in that the ventilation unit can be separated from the container.

17. The bottle according to claim 13, characterized in that the cross section of the upper portion of the reservoir tube has a larger diameter than the cross section of the lower portion of the reservoir tube.

18. The bottle according to claim 14, characterized in that the ventilation tube has an opening at its distal end.

19. A container that vents the container to the atmosphere to resist the formation of a vacuum when the container is inverted to supply a liquid thereof, the container is characterized in that it comprises: a receptacle adapted to maintain liquid, an outlet of the liquid to supply the liquid when the container is inverted, a ventilation unit adapted to fit within the receptacle comprising a reservoir tube having upper and lower portions, the reservoir tube having a first proximal end, adjacent to the upper part of the receptacle and a second an open end that projects far enough down into the receptacle so that when the container is inverted, the second open end is above the level of the liquid in the receptacle; a duct for the air in the ventilation unit that extends between the outside of the receptacle and a point in the reservoir tube above the liquid level trapped in the reservoir tube when the container is inverted; and a ventilation tube adapted to fit within the reservoir tube, having one end, the ventilation tube projecting into the reservoir tube sufficiently so that the distal end of the ventilation tube is above the level of the trapped liquid in the reservoir tube when the bottle is inverted.

20. An improved baby bottle of the pacifier type, the improvement is characterized in that it comprises: a reservoir tube having a first proximal end and a second open end, the second end of the reservoir tube projecting sufficiently downwardly into the reservoir tube. of the bottle, so that when the bottle is inverted, the second end of the reservoir tube is above the liquid level trapped in the inverted bottle; and a passage of air between the outside of the bottle and a point in the reservoir tube above the level of the liquid trapped inside the reservoir tube when the bottle is inverted, the air passage and the reservoir tube that allows the air Atmospheric flow inside the bottle to prevent the formation of a vacuum inside the bottle when the liquid is extracted.

21. A ventilation unit adapted to be installed in the open top of a container for venting the container to the atmosphere to resist the formation of a vacuum when the container is inverted to supply liquid, the ventilation unit is characterized in that it comprises: a tube of reservoir having a first proximal end and a second open end, wherein the first end is adjacent to the open top portion of the container, the second end of the reservoir tube projecting downwardly enough in the container so that when the vessel is inverted, the second end is above the liquid in the inverted vessel, the ventilation unit having a conduit for air extending from the outside of the vessel to a point in the reservoir tube above the liquid level trapped within of the reservoir tube when the container is inverted; and a ventilation tube adapted to fit within the reservoir tube, having a distal end, the ventilation tube projecting into the reservoir tube far enough so that the distal end of the ventilation tube is above the level of the liquid trapped in the reservoir tube when the container is inverted.