Abstract: The present invention relates to a venting baby bottle that includes an outer container, and an inner container, adapted to fit within the outer container, wherein the inner container has a base, a tapered neck, and a vent tube projecting upwardly into the inner container. The baby bottle of the present invention also includes a gasket having a gasket base adapted to fit the neck of the inner container, one or more gasket channels, and a lip. A reservoir is defined between the neck of the inner container and the wall of the outer container. The venting baby bottle of the present invention has an air passage, when inverted and filled with liquid, from a point outside the baby bottle to a point inside the inner container.

Abstract: There is disclosed a nipple (10) suitable for a soother, feeding bottle or drinking vessel. The nipple (10) has a teat portion (12), an areola portion (14) and a base portion (16). The nipple (10) has an interior wall (15) and a plurality of paths (20), prefereably at least partly recessed, in the interior wall (15). Each path (20) has a first end (25) located in the teat portion (12) and a second end (26) located in the areola portion (14).

Abstract: A nipple simulating the shape, surface geometry and function of a woman's breast is provided. The nipple has a stem and a base. The base has an areola region and a bulbous region. The areola region is positioned between the stem and the bulbous region, and can simulate the areola of a woman's breast. The bulbous region can simulate the region of a woman's breast surrounding the areola. The areola region has a texture or surface geometry that is different from the texture or surface geometry of the stem or bulbous region.

Abstract: A bottle assembly includes a container and a vent assembly positionable at least in part of a rim of the container. A collar assembly generally defines a closure for the container and is releasably engaged with a neck of the container. The collar assembly and the vent assembly are configured relative to one another to permit selective configuration between a first configuration and a second configuration. In the first configuration, the collar assembly urges the vent assembly onto the rim of the container such that at least a majority of a cross-section of a lateral vent of the vent assembly is disposed below the rim. In the second configuration, in which the vent assembly is omitted from the bottle assembly, the collar assembly substantially sealingly engages the rim of the container.

Abstract: Baby bottles can have a single container, or two containers to create a space for thermal isolation, as selected by the user. The baby bottle can be vented to allow air to enter the bottle through a passageway as liquid is removed. A filter and one-way valve can be provided in the passageway. The passageway can be formed by radially aligning a vent opening in a top cap with a vent opening in a nipple flange, or by providing a channel in the top cap which is always in radial alignment with both the top cap vent opening and the flange vent opening.

Abstract: In accordance with certain embodiments of the present disclosure, a nursing bottle is provided. The bottle includes a body having a hollow interior and defining an upper opening. The bottle further includes a nipple joined to the body and disposed over the upper opening. The bottle also includes a means for generating negative pressure within a portion of the interior of the body.

Abstract: A teat unit has a teat with a suction opening, a support body, and a securing part for securing the teat unit on a drinking vessel. The securing part and the support body are fixedly connected to each other indirectly or directly, and they cannot be detached from each other without being destroyed. The support body has a surface with recesses, which are covered by the teat. The teat is overmoulded over the support body, wherein the teat covers the recesses. This teat unit permits a sucking action that is as natural as possible. It is of a simple construction and can be produced inexpensively, which means that it can be disposed of after one use.

Abstract: According to a first embodiment, a feeding bottle comprises a vessel, collar, and nipple. The nipple comprises a base portion, a teat portion, an areola portion allowing movement of the teat portion towards and away from the base portion. According to a second embodiment, a feeding bottle comprises a vessel, collar, nipple and handle portion removeably secured to the vessel by the collar. The invention includes a flexible region or regions to provide a more natural feeding by closely mimicking the human breast.

Abstract: A container for storing and dispensing a substance including a deformable nipple having an open end, a feeding tip and a storage cavity; a lid adapted to releasably engage the open end of the nipple; and a (optionally) a tether having resilient properties, the tether connecting the nipple to the lid; wherein, in a storage position the substance, when placed within the storage cavity of the nipple, is contained; wherein in a mixing position, the substance is released from the storage cavity of the nipple; and wherein the container transitions from the storage position to the mixing position upon application of an external force to the nipple, causing the nipple to deform and the lid to disengage the open end of the nipple.

Abstract: Feeding bottle (10) comprising a neck to which a teat (14) is attached, characterized in that it comprises at least two visual marks (20, 22) located on one and the same circumference near the neck or near the teat and separated from one another about the axis of the feeding bottle, one of these marks (20) defining an angular position of the feeding bottle (10) about its axis for which the other mark (22) indicates a point through which the free surface (24) of the liquid contained in the feeding bottle needs to pass in order for the hydrostatic pressure of the liquid at an outlet orifice (16) of the teat (14) to be substantially zero.

Abstract: A feeding bottle (10) comprises a container (12) having a threaded neck (22) around an opening of the container, a teat (16), and, a threaded annular collar. The teat has a flange (84), adapted to seat on said neck, a nipple (88), remote from the flange, and a one-way valve (110) formed in a depression (112) in the teat to allow the passage of air into the container but prevent leakage of liquid from the container through the valve. The collar is adapted to receive the teat through the aperture (56) of the collar. The depression (112) is provided with an upstanding flange (114) above the surface of the teat where the depression (112) joins a main surface of the teat, which flange (114) serves to protect the depression (112) against deformation of the main surface of the teat.

Abstract: Teats adapted to be placed in an infant's mouth, comprising a nipple comprising at least one perforation adapted for the flow of a liquid, an areola, and an isthmus joining the nipple to the areola, wherein the nipple comprises asymmetrical palatine and lingual parts and the isthmus joins the nipple and the areola in a manner adapted for the correct positioning of lower and upper jawbones during use, and further wherein the teats are adapted to allow controlled expulsion and flow during use. Also disclosed are feeding bottles comprising such teats and feeding systems comprising such feeding bottles.

Abstract: An accessory for a drinking vessel is disclosed as including a body (102) with a passageway allowing air or liquid to pass through, the body including a first wall (104a) and a second wall (104b) which are opposite to each other, and a valve (110) in the passageway, the valve (110) including a first valve member (110a) and a second valve member (110b), in which both the first and second valve members (110a, 110b) are integrally formed with the first and second walls, and each of the first and second valve members (110a, 110b) includes respectively a first surface (111a, 111c) and a second surface (111b, 111d) which are opposite to each other, in which the first surfaces of the first and second valve members face generally a first direction, and the second surfaces of the first and second valve members face generally a second direction which is opposite to the first direction, and the first valve member is deformable between a first configuration in which at least part of the second surface of the first valve

Abstract: A feeding bottle preventing a nipple from falling out and with an air return function including a nipple body and a bottle body, the feeding bottle further includes an air inlet plate, a capping and a fitting ring, and the air inlet plate is fixed between the nipple body and the bottle body by the capping. The present application can prevent the nipple from falling out, prevent leakage caused by drawing out of the nipple when baby is sucking and even falling out, and achieve the automatic air return.

Abstract: A teat unit has a flexible teat, a receiving head and a dimensionally stable base part. The teat is arranged on the receiving head. The receiving head and the base part are connected to each other by a releasable plug connection, and the receiving head has a securing element for securing the teat unit on a drinks container.

Abstract: A spout for attachment to bottles, cups or other drinking vessels and containers having a dome shaped enclosure and a set of stability ribs. The stability ribs specifically ensuring that fluid flow through the fluid conduit remains as laminar as possible, and prevents the fluid conduit from collapse if a high amount of suction or mastication is provided by a user of the drinking vessel or container.

Abstract: A bottle assembly includes a container having a liquid chamber defined therein, and a vent assembly positionable substantially entirely within the liquid chamber of the container. A collar assembly generally defines a closure for the container and is releasably engageable with a neck of the container. The collar assembly and the container are configured relative to each other to enable selective configuration between a first configuration in which the vent assembly is disposed substantially entirely within the liquid chamber of the container and a second configuration in which the vent assembly is omitted from the container.

Abstract: A method and apparatus for venting and compressing a fluid. The apparatus comprising a valve having a vent and a compressible element attached to the vent. The vent and the compressible element define a flow-through channel therein. The compressible element has an internal space adapted to be elastically compressed and expanded. The valve is further adapted to regulate a pressure in a container when a predetermined pressure is applied to the compressible element of the valve.

Abstract: A child's cup including an inflatable bladder within the cup and separated from the contents of the cup, and a valve between the contents of the cup and the exterior of the cup and closed when the cup is not in use to resist deflation of the bladder.

Abstract: An orthodontic feeding nipple adapted for attachment to a feeding bottle, said feeding nipple having a monolithic, single-walled hollow body of elastomeric material. The body has an annular securing flange at a base end of the body. An inner contour of the flange defines an inlet opening for liquid into said feeding nipple. A bottle ventilation hole is present in said flange allowing the passage of air into the feeding bottle. The body has a hollow shell portion integral with the flange at the inner contour thereof. The shell portion has a lower shell portion, a central shell portion, and a top shell portion. The top shell portion includes a dispensing holes containing wall section that is provided with a group of multiple liquid dispensing holes. This wall section is arranged at the side of the ventilation hole and has a substantially uniform wall thickness in the region of the group of dispensing holes.

Abstract: A nipple assembly is removably attachable to a baby bottle via a retainer ring and comprises a nipple having a flow aperture through one end, and a nipple flange structured to support the nipple. A flow control valve assembly is mounted to the nipple flange and extends inwardly from an inner surface of the nipple flange, the flow control valve assembly is structured to allow pressures to equilibrate between the inside and outside of the baby bottle, without allowing fluid to leak therethrough. A training cup spout assembly is removably attachable to a cup and comprises a spout having a spout channel extending therethrough. The spout channel has a dual valve assembly mounted therein to permit flow for drinking, as well as to prevent leakage of fluid from the cup. A flow control valve assembly may be mounted to the training cup spout assembly to permit pressure equilibration.

Abstract: A bottle assembly including a bottle, a top closure member adapted for releasable engagement with a top portion of the bottle, and a bottom closure member adapted for releasable engagement with a base portion of the bottle. The bottom closure member has a base panel with at least one aperture therein. A diaphragm is positionable between the bottom closure member and the base portion. The diaphragm has at least one sealing element for sealingly engaging the base panel of the bottom closure member and an air passage extending through the at least one sealing element. The diaphragm is moveable between a sealed position and an unsealed position. The air passage is configured to inhibit liquid contained within a liquid chamber of the bottle from entering the air passage when the diaphragm is in its sealed position by trapping air within the air passage.

Abstract: A multi flow multi venting nipple includes a teat having a flow aperture which allows for at least two different flow rates depending upon the operative radial orientation of the nipple. The nipple further includes a number of vent apertures, equal to the number of flow rates, formed by check valves extending through the nipple to reduce negative pressure during use. Each vent aperture is associated with a particular flow rate, and is radially oriented to be uppermost and vertically above the flow aperture during use at such flow rate. All vent apertures will be operable at once. The nipple further includes safety walls extending from the nipple and surrounding at least half the periphery of each check valve forming the vent apertures. The safety wall prevents unintentional and rough contact from damaging the check valves.

Abstract: A system for managing the fluid intake of a person is disclosed. The system consists of multiple containers of various volumes, a common lid configured to incorporate a flow control valve, multiple flow control valves having varying flow rates, a date indicator ring incorporated circumferentially on said containers, a content indicator disposed on said lid, a chiller insert, and an optional slip on handle. The user selects a container based on the fluid needs of a person and a flow control valve based on the drinking ability of the person. The user fills the container with a drinkable fluid, and indicates the nature of the contents with the content indicator and the date of filling with the date indicator ring. The chiller insert allows the user to cool the contents without the possibility of dilution as with standard ice cubes.

Abstract: A bottle teat comprising: A nipple sleeve having a hollow nipple and a through-hole connected at the bottom to a hollow nipple sleeve which is connected at the bottom to a nipple flange that is connected to the nipple sleeve to be fastened to a bottle by a fastening ring which serves at the bottom with an annular disc-shaped ring flange overlapping the nipple flange, A contact area projecting downward or upward from the nipple flange, or from the nipple sleeve above the nipple flange outward into the area for placing a ring flange, and A lip valve that is opened when the nipple flange is not fastened to a bottle arranged in a deforming area next to the contact area so that the deformation of the nipple flange that arises from pressing the fastening ring against the contact area closes the valve.

Abstract: A spout for a spill-proof beverage container has a side wall defining an outer surface and an inner surface defining a discharge passage. A valve in the discharge passage includes two flanks formed integrally with the side wall and projecting from opposite sides of the inner surface of the spout. The front end faces of the flanks mate with one another along a slit that extends generally parallel to the longer axis of the spout. At least the front portions of the flanks are inclined away from the mouth of the spout such that pressure within the container acts to urge the flanks against one another so as to maintain the slit closed. Deformation of the side wall when the spout is held between the lips of a drinker acts to open the slit and create an opening between the flanks to allow the beverage to be discharged.

Abstract: A container for storing and dispensing a substance comprising a deformable nipple having an open end, a feeding tip and a storage cavity; a lid adapted to releasably engage said open end of said nipple; and a (optionally) a tether having resilient properties, said tether connecting said nipple to said lid; wherein, in a storage position said substance, when placed within said storage cavity of said nipple, is contained; wherein in a mixing position, said substance is released from said storage cavity of said nipple; and wherein said container transitions from said storage position to said mixing position upon application of an external force to said nipple, causing said nipple to deform and said lid to disengage said open end of said nipple.

Abstract: The present invention relates to a drinking apparatus including a vent system that removably connects to a drinking container. The vent system is used to create a variety of leak resistant drinking containers, such as toddler drinking cups, baby bottles, and other drinking containers. The vent system includes a substantially rigid disc portion and base portion, the base portion including base air vent channels merging into an integral one-way valve. The vent system provides passage for air from the exterior of the bottle to the interior of the bottle, but it does not allow liquid to exit the bottle via the vent system. An optional anti-bubble tube may be used with the vent system to provide for air entering the inverted container to reach an air pocket formed in the bottom portion of the container.

Abstract: A liquid metering assembly is described and which includes a container for enclosing a source of a liquid to be dispensed; a container cap defining a dispensing aperture and a vent aperture which is releasably affixed to the container; a moveable diaphragm releasably cooperating with the container cap, and coupled in fluid flowing relation relative to the dispensing aperture, and wherein the moveable diaphragm has a valve member; and a moveable liquid volume control member which cooperates with the moveable diaphragm, and wherein, when a predetermined suction is applied to the dispensing aperture of the container cap, a user may withdraw a given volume of liquid from the beverage container.

Abstract: An infant cup includes a container, a lid, and an elbow straw. The container is configured to receive and hold a fluid and contains an opening at the top of the container. Furthermore, the lid is sealingly engaged with the container and includes an outlet configured to output the contents of the container. Moreover, the elbow straw is rotatably coupled to the lid and configured to sit and rotate within the container when the lid is coupled to the container. Additionally, the straw is weighted and thus, no matter what direction a child tips the infant cup, the tip of the straw will always rotate to be in contact with the fluid within the container. The elbow straw is also removable from the lid for ease of cleaning. The container may also contain handles attached to the outside of the container.

Abstract: A teat unit for sucking a liquid from a liquid container includes a teat and a flow restrictor with a through-opening. The teat comprises a mouthpiece, with a suction opening, and a main body which is formed integrally on the mouthpiece and widens relative to the mouthpiece. The flow restrictor defines a maximum flow of the liquid passing through the suction opening from the liquid container. According to the invention, the flow restrictor is arranged outside the mouthpiece, and the suction opening has a greater cross-sectional surface area than the through-opening of the flow restrictor. The teat unit permits a feeding action that is as true to nature as possible, since the mouthpiece can be deformed very considerably, without substantially impairing the flow restriction.

Abstract: An artificial nipple can include a nipple tip section that can sufficiently reach the sucking fossa and can be appropriately squashed The artificial nipple can have a base section that widens to match an attachment object, an areola section formed contiguously to the base section and that extends while narrowing gradually, and a nipple section that extends from the areola section and that narrows more than the areola section. A flange section can be provided in the base section with a predetermined thickness. A check valve can be formed with a valve body so as to be entirely accommodated within the thickness dimension of the flange, and provided in the base section.

Abstract: A teat for a feeding bottle has a one-way valve located remotely from the nipple of the teat to allow air to enter the feeding bottle to replace liquid sucked out of the bottle through the nipple while preventing liquid from leaking from the bottle. The one-way valve comprises an inwardly-oriented depression having opposed mutually inclined side walls meeting along a ridge having a slit. In the invention, when undeflected, the side walls make line contact with one another at the ridge and the thickness of the side walls is less than 0.4 mm so that, when acted upon by an increased pressure in the feeding bottle, the side walls collapse against one another and make sealing contact along a surface that extends from the ridge in the direction away from it.

Abstract: The present invention relates to a drinking apparatus including a vent system that removably connects to a drinking container. The vent system is used to form a variety of leak free and essentially vacuum-free drinking containers. The vent system, includes a closure member and a valve, and may be used with an anti-bubble tube. The closure member may be a single member or may be formed of two portions. The valve may be coupled thereto or integrally formed therewith. The anti-bubble tube and valve function as a diving bell to generally prevent liquid from entering the anti-bubble tube.

Abstract: A vent valve, and a vent valve assembly, for a liquid dispensing container, employ a vent disc having small open vent holes in cooperation with an overlying thin flexible flap that covers and closes the vent holes to limit liquid pressure on the holes when the container is upright, yet require little suction pressure to move the flap to draw liquid or vent through the holes. The vent valve can be used in a bottom cap that is attachable to the bottom open end of the container. The vent valve assembly includes such a bottom cap, a sealing member for sealing the bottom cap to the container, and a vent valve. The vent valve and/or bottom cap have an elevated vent disc and a top portion having the thin flexible flap.

Abstract: A teat has a main body, a mouthpiece with a suction opening, and at least one milk channel extending from the main body to the suction opening. During use, the mouthpiece has an upper side directed towards a palate of a baby, and a lower side directed towards the baby's tongue. It is designed, on its upper side, with at least two walls, and with at least one air space arranged between said walls. The at least one air space extends separately from the at least one milk channel. The mouthpiece is designed on the upper side in such a way that this at least one air space inflates in the presence of an underpressure. This allows the palate, tongue and teat to interact in a manner that imitates breastfeeding.

Abstract: The present invention relates to a silicone baby bottle which is made of silicone which does not generate environmental hormones. This allows an infant or young child to be safely fed. The silicon baby bottle includes a body part (10), a nipple (20), and a coupling means composed of a first coupling ring (30) and a second coupling ring (40) which are screwed with each other to be coupled. The body part (10) and nipple (20) are made of silicone which is a soft material and the coupling means (30, 40) is made of a rigid material so that a coupled structure of the body part (10) and nipple (20) can be tightly sealed. Since only the body part (10) and nipple (20) made of silicone are allowed to come into contact with infant formula and infant's mouth, the infant is not exposed to environmental hormones attributable to synthetic resin.

Abstract: A dummy teat including a nipple carrier and a hollow dummy nipple projecting from the nipple carrier, which has areas of a smaller wall thickness at least on two opposed longitudinal sides.

Abstract: A nursing bottle formed of a large volume container, incorporating a vent tube that extends to vent pressure at all times. The nursing bottle may have a cylindrical shape or other configuration that prevents formula placed therein from blocking the vent tube regardless of its angular disposition. The vent tube extends distally from the vent insert, operatively associated with a collar, that holds the vent structures and the nipple to the wide rimmed opening. In addition, the vent tube has a conical shape of decreasing diameter distally toward the center of the bottom to dissipate the pressure that may cause leakage from the bottle. Further, the vent insert has a major and minor seal that prevents leaks out of the collar and onto an infant.

Abstract: An anti-colic baby feeding bottle (10) includes a bottle body (16) having a bottle neck (18), a cap (14) removably fastened to the bottle neck (18), and an elastic teat (12). The teat (12) includes a nipple portion (24) having a fluid-dispensing through-hole (26) and an annular base (28), an annular flange (30) extending radially outward from the annular base (28), a plurality of apertures (32) formed 360° around the annular flange (30), and an annular skirt (40) depending from the annular base (28). The annular skirt (40) is spaced radially inward apart from an inner surface (42) of the bottle neck (18) to define an annular passage (44) having an outer end (46) in air communication with the apertures (32) and an inner end (48) which is normally closed by biasing force of a free end (50) of the annular skirt (40) that presses against the inner surface (42) of the bottle neck (18).

Abstract: The invention relates to a teat for feeding bottles, including a receiving head, produced from a dimensionally stable material, and a rubber-elastic suction element. An entry channel leads to the bottle interior and channels lead from there to the outer surface of the receiving head. The suction element, in an initial position, elastically and sealingly rests on at least one section of an outer surface of the receiving head. Milk ducts are located in the contact area between the suction element and the receiving head and communicate with the channels of the receiving head which lead towards the outlet channel in the mouthpiece so that, when a vacuum is produced in the mouthpiece, milk can flow from the feeding bottle through the milk ducts to the outlet channel, the suction element being returnable to its initial position and the flow of milk being interrupted when there is no vacuum.

Abstract: A vent valve, and a vent valve assembly, for a liquid dispensing container, employ a vent disc having small open vent holes in cooperation with an overlying thin flexible flap that covers and closes the vent holes to limit liquid pressure on the holes when the container is upright, yet require little suction pressure to move the flap to draw liquid or vent through the holes. The vent valve can be used in a bottom cap that is attachable to the bottom open end of the container. The vent valve assembly includes such a bottom cap, a sealing member for sealing the bottom cap to the container, and a vent valve. The vent valve and/or bottom cap have an elevated vent disc and a top portion having the thin flexible flap.

Abstract: A heat-insulation safety nursing bottle includes a nursing bottle body, a heat shield cap fastened to the bottleneck of the nursing bottle body to hold down a nipple, and a cylindrical heat shield body fastened to the heat shield cap and surrounding the nursing bottle body for holding by a baby or nursing mother to prevent scalding. The cylindrical heat shield body prohibits the baby from touching or eating broken chips if the nursing bottle body is broken accidentally.

Abstract: A beverage bottle for storing and dispensing water and impure sports beverages having a container and a dispensing opening on a top wall movable between an open position and a closed position and a unitary valve disposed within the container bottom wall having a vertically sinuous contour, and laterally opposed, laterally actuating, compliant slit faces and a substantially rigid annular flat surface. As the vertically sinuous contour is flattened upon the annular flat surface, the slit faces are laterally urged together establishing a preloaded seal, for leak resistant valve operation, and reduced restriction dispensing of water and impure sports beverages.

Abstract: The present invention relates to a drinking apparatus including a vent system that removably connects to a drinking container The vent system is used to create a variety of leak resistant drinking containers, such as toddler drinking cups, baby bottles, and other drinking containers. The vent system includes a substantially rigid disc portion and base portion, the base portion including base air vent channels merging into an integral one-way valve. The vent system provides passage for air from the exterior of the bottle to the interior of the bottle, but it does not allow liquid to exit the bottle via the vent system. An optional anti-bubble tube may be used with the vent system to provide for air entering the inverted container to reach an air pocket formed in the bottom portion of the container.

Abstract: According to a first embodiment, a feeding bottle comprises a vessel, collar, and nipple. The nipple comprises a base portion, a teat portion, an areola portion allowing movement of the teat portion towards and away from the base portion. According to a second embodiment, a feeding bottle comprises a vessel, collar, nipple and handle portion removeably secured to the vessel by the collar. The invention includes a flexible region or regions to provide a more natural feeding by closely mimicking the human breast.

Abstract: A preformed liner that expands when filled is provided. In one embodiment, the preformed liner includes a central section having a plurality of flutes that allow the liner to expand. In other embodiments, the preformed liner includes at least a central section that is made of an expandable or stretchable elastomeric material. In still other embodiments, the preformed liner includes a central section having a plurality of flutes and is made of an expandable or stretchable elastomeric material.

Abstract: A venting arrangement for a feeding teat closure 10 that can be fitted to or form part of a feeder. The closure 10 includes an opening 12 with which a mounting part of a feeding teat can engage in a substantially sealed manner. The venting arrangement includes at least one aperture 21 in the opening 12 and at least one recess 22 that creates a break in the seal between the teat mounting part and a sealing surface 19 of the opening 12 whereby air can vent through the combination of the break formed by the recess 22 and the aperture(s) 12.

Abstract: A nursing bottle formed of a container, incorporates a reservoir and venting tube that eliminates vacuum. The nursing bottle has a cylindrical shape or other configuration that prevents formula therein from blocking the venting tube when held at any angle. The venting tube extends distally from the insert and alternatively may be in separate pieces. The insert has a flange on its perimeter, extending inferiorly and securing the insert to the superior and lateral aspects of the neck of the container. The vent opens at the volumetric center of the reservoir above the conically shaped venting tube depending from the reservoir, where the venting tube has a conical shape of decreasing diameter.

Abstract: Feeding bottle (10) comprising a neck to which a teat (14) is attached, characterized in that it comprises at least two visual marks (20, 22) located on one and the same circumference near the neck or near the teat and separated from one another about the axis of the feeding bottle, one of these marks (20) defining one angular position of the feeding bottle (10) about its axis for which the other mark (22) indicates a point through which the free surface (24) of the liquid contained in the feeding bottle needs to pass in order for the hydrostatic pressure of the liquid at an outlet orifice (16) of the teat (14) to be substantially zero.