Abstract: A feeding bottle (10) comprises a container (16), a teat (12) and a collar (14) to screw the teat (12) onto and seal the container (16). A vent assembly (18) is mounted between the teat (12) and the container (16) and includes a vent tube (22) passing down to a position close to the base of the container (16) and having a one way valve (34) allowing air to pass into the container (16) on application of suction to the teat (12) but preventing liquid flowing into the vent tube (22), together with a valve flange (36) acting as an anti-choke member.

Abstract: An enteral feeding device, includes a system for delivering liquid nutrients to an enteral feeding tube. The device includes: (a) a container, having first, second and third openings; (b) a tip configured to be coupled to the container, the tip having an opening in fluid communication with the first opening of the container, the second opening of the container configured such that nutrient can be delivered to the second opening and the third opening configured to receive nutrient or to allow gas expelled from the patient (e.g., through burping) to flow there through.

Abstract: A feeding bottle that includes a bottom surface that includes an axially disposed concave shaped portion that includes an air vent opening. An air vent assembly is securely disposed within the air vent opening to prevent air from leaking into the interior of the bottle or to prevent fluid from leaking out of the interior of the bottle using a closely fit connection that may include a beaded portion. The air vent assembly includes two resilient surfaces formed in a frustum shape having an upper surface. A valve opening is formed on the upper surface between the two resilient surfaces and is biased into a normally closed configuration. An air channel axially disposed within the air vent assembly and in communication with the valve opening, allows air to force the valve opening into an open configuration when the air pressure differential is greater than the bias force of the surfaces.

Abstract: A vented bottle is provided. The vent is remote from the nipple. The bottle has 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 can have 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 can have a texture or surface geometry that is different from the texture or surface geometry of the stem or bulbous region.

Abstract: A vent system for a bottle such as baby bottle or a sports drink bottle that is easily opened and closed. The vent system is built into the wall of the bottle and includes an air port through the wall and a plug that closes and opens the port by operation of the bottle user. When the vent system is open, air can flow into the bottle to prevent clogging and when the system is closed, the bottle is secure against leakage or invasion of bacteria or the like.

Abstract: A variable flow infant feeding assembly is designed so that a caregiver can select an optimal feeding flow rate without having to change nipples, as may be desired depending upon the age and appetite of the infant as well as the liquid that is being dispensed. Preferably, the assembly includes a baby bottle and a nipple member that has ventilation structure defined therein for permitting replacement air to enter the baby bottle during feeding. Retention structure such as a threaded ring member is provided for securing the nipple member to the baby bottle. Advantageously, variable restrictor structure is provided, preferably so as to be integral with the ring member, for selectively blocking at least a portion of the ventilation structure. By controlling the size of the opening through which replacement air flows into the baby bottle, the variable restrictor structure permits the feeding flow rate through the nipple member to be adjusted by a caregiver.

Abstract: There is provided a spill proof cup assembly having a cap with at least one spout outlet, a cup with an upper open portion adapted to securely and sealingly receive the cap, and a thermoplastic elastomer, or similar elastomeric material, co-molded bottom portion with a vent disposed therein for allowing air to enter the cup as fluid exits through the spout outlet. The result is a one-way flow of air.

Abstract: A container has an inner vessel for containing liquid such as milk, water, juice or the like. An outer vessel creates a larger volume than the volume of the inner vessel, so that the inner vessel can fit inside the outer vessel. A top cap secures the inner and outer vessels in spaced relation to each other. The top cap can have an integral nipple in fluid communication with the inside of the inner vessel. In another embodiment, a vent in a top cap permits air to enter a liquid holding vessel as the liquid is removed. A filter in the vent allows the air to pass, but not the liquid, so the liquid does not spill when the container is tipped.

Abstract: A member that positions a vent disc in an end of a container is provided. The member has at least one projection extending from the vent disc virtually solely for positioning the vent disc in its secured position in the end of a container. The at least one projection is located in the center portion of the vent disc and can be one projection, which extends from the vent disc at the center point of the vent disc. The projection can be of a geometrical shape that facilitates gripping and the handling of the vent disc, including rectangular, ellipsoidal or cylindrical shapes.

Abstract: An air venting apparatus for a milk bottle having a soft teat for a baby to suck, a bottle for containing milk, and a fixing frame for fixing the soft teat to the bottle without leakage. In the air venting apparatus, an upper plate is disposed between the top of a body of the bottle and the base of the teat and has at least one air inlet groove for guiding external air into the bottle body. A lower plate is combined with the upper plate and has at least one thorough hole and an air control valve to control the amount of the introduced air and discharges a gas generated from high-temperature milk outside the bottle body. An annular connection member is combined with the lower plate and provides the amount-controlled air into the bottle body.

Abstract: A valve for use with a cap for a spill resistant cup, the cap including a spout to dispense the liquid and a valve mount extending from the spout to engage with the valve. The valve includes a generally cylindrical valve tower extending from a valve base to sealingly engage the valve mount and having an interior bore for the passage of liquid and a valve face sloping across an upper end of the valve tower bore from a higher first point on a first side of the valve tower and to a lower second point on a diametrically opposite second side of the valve tower. A valve mechanism is located in the valve face for controlling a flow of the liquid through the valve mechanism dependent upon a pressure differential across the valve face. The valve mechanism is a valve slit extending through the valve face perpendicular to a mouth opening in the spout and is S-shaped or straight.

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 straw set with a ventilating structure includes a nipple connected to a circular base with a circular air guiding trench, an air hole that passes through, and a chamber with two axles attached underneath. Underneath, a straw base consists of an inner circular wall fixed to the nipple, an outer circular wall fixed to the bottom of the circular base, another circular air guiding trench concaved between the inner and the outer circular walls, and a hollow pipe protruding downwards. The straw base is supported by a soft plastic circular base with a hole at the center, a second outer circular wall expanded upward to fix upon the first outer circular wall, a air guiding trench expanded downward from the edge of the second outer circular wall, and another air hole that passes through the soft plastic circular base.

Abstract: Improved no-spill drinking products including a nipple or soft spout having a valve incorporated therein. The valve is designed to provide an enhanced no-spill function providing an extremely secure seal against accidental liquid flow from the nipple or spout when the user is not drinking therefrom.

Abstract: A variable flow infant feeding assembly is designed so that a caregiver can select an optimal feeding flow rate without having to change nipples, as may be desired depending upon the age and appetite of the infant as well as the liquid that is being dispensed. Preferably, the assembly includes a baby bottle and a nipple member that has ventilation structure defined therein for permitting replacement air to enter the baby bottle during feeding. Retention structure such as a threaded ring member is provided for securing the nipple member to the baby bottle. Advantageously, variable restrictor structure is provided, preferably so as to be integral with the ring member, for selectively blocking at least a portion of the ventilation structure. By controlling the size of the opening through which replacement air flows into the baby bottle, the variable restrictor structure permits the feeding flow rate through the nipple member to be adjusted by a caregiver.

Abstract: A single use recyclable infant feeding bottle is provided for easy use with virtually eliminated or substantially reduced risk of contamination. The single use recyclable infant feeding bottle of the invention comprises a container with a container lip having an outer securing hook and an inner securing rib, and an integrated assembly that has a teat and a sealing cap in a single piece. The sealing cap has a snap-on feature that engages with the container lip. Thus, the single use recyclable infant feeding bottle can be easily assembled by putting the integral assembly and the container together through the snap-on feature. Moreover, moulding the teat and sealing cap into one piece makes the manufacture process of the single use recyclable infant feeding bottle efficient and economical.

Abstract: An improved baby bottle nipple with a vent comprising a microporous membrane sealed within a membrane holder, which is then inserted into a wall of the nipple. The microporous membrane permits air to pass through to the baby bottle to relieve negative pressure within the bottle but does not permit the liquid within the bottle to leak out of the bottle. The hard material of the membrane holder allows for ease in removing, cleaning, and replacing the vent.

Abstract: A nursing bottle includes a container having a threaded neck, a flanged nipple seated on the neck and a cap having a central opening through which the nipple extends. A threaded ring on the cap engages the threaded bottle neck with the outer circumferential edge of the nipple's flange compressed between the annular top and the rim of the bottle neck. A small slit in an area of thinned material at the nipple tip opens when the baby nurses and substantially closes when the baby is not nursing. The nipple flange includes a vent hole between its inner and outer circumferential edges, and an annular bead between its inner circumferential edge and the aperture. The annular bead engages the cap top when air pressure within the container is not substantially lower than air pressure external to the container, thereby providing a seal between the aperture and external air.

Abstract: Disclosed are beverage containers and closures for beverage containers that are vented for the purpose of reducing negative pressure or vacuum that builds up inside the container when a beverage is being consumed therefrom. Also disclosed are closures which provide for chemical treatment of a liquid by a porous treatment matrix when the liquid is dispensed through the closure.

Abstract: A feeding bottle (10) includes a teat assembly (14) and an air inlet (18) at its base. A stopper assembly (21) seals the aperture (18) and is manually operable to allow air flow through the aperture providing pressure equalisation within the bottle.

Abstract: Improved no-spill drinking products providing an extremely secure seal against accidental liquid flow when the user is not drinking therefrom.

Abstract: A baby bottle assembly including a nipple having a substantially flat membrane defining multiple pinholes for controlling the flow of liquid. The nipple is mounted on a cap that screws onto the bottle body. The nipple is formed from a suitable elastomeric material (e.g., soft rubber, thermoplastic elastomer, or silicone) such that the membrane stretches when subjected to a differential pressure. The pinholes are formed by puncturing the membrane while subjecting the membrane to radial tension, and using one or more pins having a substantially circular cross-section and sized such that each pinhole is closed by the surrounding elastomeric material when the pins are removed.

Abstract: A nursing bottle (1) formed of a large volume container, incorporating a vent tube (3) that extends inwardly of the container, having a vent port (4) arranged approximately at the volumetric midpoint (12) of the container, so as to allow for venting of pressure, whether of excessive or vacuum, to the atmosphere, at all times. The volumetric capacity of the nursing bottle container may be formed of a spherical shape (1), hemispherical shape (40), cylindrical shape (18), or to other configurations that provide for the internal volumetric capacity so that any formula placed therein will be prevented from blocking the vent port (4), the vent tube (3), regardless of the angular disposition undertaken by the nursing bottle during usage.

Abstract: A nipple with an extended sleeve comprises: a suction head; an inner nipple opening at a lower end of the suction head; an air inlet valve enclosed at an edge of the nipple opening; a sleeve extended from an inner side of the air inlet valve; into a milk bottle and integrally formed with the nipple. By above structure, air flowing into nipple from the air inlet valve will flow along the “outer wall” the sleeve to a rear section of the bottle so as to be far away from the bottle opening, but the liquid in the bottle flows out along a liquid supply channel within the sleeve. Thereby, the air inlet path is isolated from the liquid outlet path. Furthermore, an outer surface of a distal end of the sleeve is formed with one of a straight folding flange, an inclined folding flange, and a concave folding flange.

Abstract: An air venting apparatus for a milk bottle having a soft teat for a baby to suck, a bottle for containing milk, and a fixing frame for fixing the soft teat to the bottle without leakage. In the air venting apparatus, an upper plate is disposed between the top of a body of the bottle and the base of the teat and has at least one air inlet groove for guiding external air into the bottle body. A lower plate is combined with the upper plate and has at least one thorough hole and an air control valve to control the amount of the introduced air and discharges a gas generated from high-temperature milk outside the bottle body. An annular connection member is combined with the lower plate and provides the amount-controlled air into the bottle body.

Abstract: A no-spill cover assembly (14) includes a lid assembly (16) that is releasably mated to the drink container (10). The lid assembly (16) has an outlet channel (22) and an inlet channel (24) integrally formed therein. Furthermore, the cover assembly (14) includes a one-piece valve assembly (18) for attachment to the lid assembly (16). The one-piece valve assembly (18) is an integral one-piece structure that is formed of a flexible material and includes has an outlet valve portion (36) and an inlet valve portion (38). The outlet valve portion (36) includes a resilient outlet flange (44) that is positioned within the outlet channel (22) for selectively permitting a first flow therethrough and out of the drink container. The inlet valve portion (38) includes a resilient inlet flange (54) that is positioned within the inlet channel (24) for selectively permitting a second flow therethrough and into the drink container (10).

Abstract: A container for nursing infants, the container including an interior with a first end (or top end) opening into the interior. A flexible nipple attaches across the opening and is positioned such that at least a portion of the nipple extends into the interior of the container. A container lid is then positioned over the flexible nipple and encloses the interior of the container. Also, the present invention includes a second end (or bottom end) with internal walls extending upwards toward the top end and thereby forming an internal cavity in the container. A thermic module is then positioned in this internal cavity.

Abstract: A variable flow infant feeding assembly is designed so that a caregiver can select an optimal feeding flow rate without having to change nipples, as may be desired depending upon the age and appetite of the infant as well as the liquid that is being dispensed. Preferably, the assembly includes a baby bottle and a nipple member that has ventilation structure defined therein for permitting replacement air to enter the baby bottle during feeding. Retention structure such as a threaded ring member is provided for securing the nipple member to the baby bottle. Advantageously, variable restrictor structure is provided, preferably so as to be integral with the ring member, for selectively blocking at least a portion of the ventilation structure. By controlling the size of the opening through which replacement air flows into the baby bottle, the variable restrictor structure permits the feeding flow rate through the nipple member to be adjusted by a caregiver.

Abstract: A device for use in increasing milk flow from a feeder bottle. The device includes a shaft adapted for entry into a correspondingly shaped hole in the feeder bottle. The device further includes a retention element for retaining the device in the hole and a channel, formed in a wall of the shaft. The shaft is movable such that it can, in a first position, seal the hole closed and, in another position (illustrated), permit airflow into the feeder bottle via the channel.

Abstract: A nipple simulating the shape and function of a woman's breast is provided. The nipple has a stem and a base. The nipple preferably has a securing structure integrally formed to the base. The base has an areola region and a bulbous region. The areola region is positioned between the stem and the bulbous region, and is designed to simulate the shape of the areola region of a woman's breast. The bulbous region is positioned between the areola region and the securing structure, and is designed to simulate the shape of the region of a woman's breast surrounding the areola region.

Abstract: A nipple assembly is provided for a water bottle. The tamper-evident cap from a bottle is removed and replaced with a nipple cap that has an opening through which a nipple extends. The nipple has a flange that is urged against an end wall of the nipple cap by a lip of the bottle. An annular disc is preferably interposed between the lip and the nipple flange with the disc being fastened to the nipple cap to prevent separation of the nipple from the nipple cap. A small channel in the disc places the inside of the bottle in gaseous communication with threads on the cap and thus in communication with the air. The channel is small enough to prevent fluid from leaking from the bottle.

Abstract: An air inlet sleeve of a baby's bottle has a hollow sleeve capable of being installed to an opening of a baby's bottle. An annular neck protrudes from a periphery of the distal end of the sleeve. The annular neck inserts into a lower section of a nipple matched to the baby's bottle and then a cover of the nipple covers and positions the nipple. An annular channel is formed between an inner wall and an outer wall of the sleeve. A bottom of the channel has a plurality of air inlet holes which are arranged around the round bottom. Air entering into the nipple will flow along the annular channel, then output from some of the air inlet holes which has a lower liquid pressure; thereby, as a user sucks the liquid in the baby's bottle, the user will not suck the air.

Abstract: A nursing bottle with a vent located in its base. The vent is positioned so that the user can easily open it by pressing on it with a finger or thumb. The vent remains open only so long as it is pressed. Once released, a spring returns the vent to its closed position. The user may therefore set the bottle down without having to do anything to close the vent. The vent assembly may be easily removed from the bottle for thorough cleaning. An access notch is provided so that the user does not have to strain to reach the vent. Mounting features are included to position the notch in a right-handed or left-handed configuration.

Abstract: A leak-proof closure (10) for dispensing liquid beverages from a container. The closure (10) contains a outlet passage (14) which is open at both ends. Within outlet passage (14) there is a membrane (13) which denies communication between the interior of the container and the flow opening (15). When external suction is applied to the end of outlet passage (14), membrane (13) sealingly disengages from circumferential seal member (12). This allows the contained beverage to egress through the flow opening (15). When the external suction is removed, membrane (13) automatically sealingly engages with circumferential seal member (12).

Abstract: The invention is an improved nursing bottle, providing a new valve within its bottom structure. A flexible disk is disposed within the bottom end cap of the nursing bottle, clamped at its periphery to the periphery of the base when the bottle is assembled. The disk has a ring of slits near its periphery which are closed when pressure inside the bottle equals ambient pressure. The slits are further sealed by contact with the base. Holes, which are sealed closed by contact with the disk, are provided in the base within a central portion which does not contact the slits in the disk. When pressure within the bottle drops, the disk bows upwardly in its center, opening the valve and allowing air to enter the bottle. When pressure within the bottle increases, the valve again closes.

Abstract: A valve for preventing the flow of fluid when the temperature of the fluid is above a predetermined threshold, the valve including: a body having at least one opening for allowing the fluid to pass when the temperature of the fluid is below the predetermined threshold; and a shape memory or bi-metal actuator for substantially closing the at least one opening when the temperature of the fluid is above the predetermined threshold to prevent the fluid from passing.

Abstract: Baby bottle nipples which mimic the function of the human breast nipple are provided. In the human breast nipple, milk is delivered to the baby through 15-25 fluid-delivery capillaries called lactiferous ducts. These ducts are 2-4 centimeters in length and 500-900 microns in diameter. Baby bottle nipples fabricated in accordance with the methods of this invention have the common feature of at least one hydrophilic fluid delivery passage. In one embodiment, the fluid delivery passage is a microtube. In another embodiment, the fluid delivery passage is a microchannel. In yet another embodiment, the fluid delivery passage comprises a porous reticulated foam with interconnected pores. In each of these embodiments, the fluid delivery passage has at least one dimension in the range of 1-2000 microns.

Abstract: A nipple includes a nipple body, a peripheral flange, an air intake tube, and an inlet hole. The flange extends outwardly from a periphery of the nipple body, and has upper and lower flange surfaces. The lower flange surface has a recess which is confined by a side wall and a top wall. The air intake tube projects into the recess from the top wall, and has an end part formed with a split for passage of air. The split divides the end part into two openable valve members. Reinforcement ribs respectively connect the valve members to the side wall, thus strengthening the valve members.

Abstract: A no spill training cup includes a cup and cover with a drinking spout in the cover. The cover also has a vent opening for maintaining the ambient pressure in the cup with the vent opening being covered by a hydrophobic membrane that allows the flow of air into the cup but prevents liquid from flowing out of the cup through the vent opening. A valve housing is attached to the cover on the inlet side of the spout. The valve includes a diaphragm supported in the housing and biased to engage a valve seat in the housing to prevent flow of liquid from the cup to the spout. When a child sucks on the spout, the pressure on the outlet side of the diaphragm causes it to disengage the valve seat and allow the liquid to flow out of the cup through the spout. When the child stops sucking on the spout, the valve immediately returns to its closed position on the seat so as to prohibit the flow of liquid from the cup through the spout.

Abstract: A device (10) for use in increasing milk flow from a feeder bottle (B). The device (10) includes a shaft (11) adapted for entry into a correspondingly shaped hole (H) in the feeder bottle (B). The device further includes a retention element for retaining the device in the hole (H) and a channel element (13), formed in a wall of the shaft (11). The shaft element (11) is movable such that it can, in a first position, seal the hole (H) closed and, in another position (illustrated), permit airflow into the feeder bottle (B) via the channel element (13).

Abstract: A sucking cap of a nursing bottle comprises a sucking portion which is provided with four ventilation holes and a fastening portion connected with the bottom end thereof. The fastening portion is provided with inner threads engageable with outer threads of the neck of the nursing bottle.

Abstract: The invention is an improved nursing bottle, providing a new valve within its bottom structure. A flexible disk is disposed within the bottom end cap of the nursing bottle, clamped at its periphery to the periphery of the base when the bottle is assembled. The disk has a ring of slits near its periphery which are closed when pressure inside the bottle equals ambient pressure. The slits are further sealed by contact with the base. Holes, which are sealed closed by contact with the disk, are provided in the base within a central portion which does not contact the slits in the disk. When pressure within the bottle drops, the disk bows upwardly in its center, opening the valve and allowing air to enter the bottle. When pressure within the bottle increases, the valve again closes.

Abstract: A leak-free drinking beaker comprises a container as well as a lid closing the container, a drink opening which opens into the interior of the container, and a valve extending over the drink opening, which valve is held in the closed position under a certain pretension and can be released against said pretension under the influence of a pressure difference. The valve is a double-acting non-return valve and comprises a flexible valve element and two separate valve seats, the valve element and one of the valve seats has a blocking action in a direction opposed to the direction in which the valve element has a blocking action with the other valve seat.

Abstract: A beverage container is provided with a hydrophobic vent consisting of a relatively thick and rigid disc-shaped piece of macroporous plastic having pore sizes averaging from 7-350 microns. The vent can be welded, molded or secured to the sidewall, bottom or cap of a plastic beverage container thus eliminating all moving parts. The macroporous plastic is resistant to oxidative abrasion, contamination and wetting and is strong enough to resist breakage. In one embodiment a baby bottle is provided which consists of a plastic bottle body, a nipple, and means for fastening the nipple to the bottle body. The bottle body is provided with a macroporous plastic vent which can be welded, molded or secured to the sidewall or bottom of the bottle body thus eliminating all moving parts. The bottle body can be washed repeatedly as a single unit with the vent intact.

Abstract: A combination angled cap and vent for connecting a baby bottle with a nipple has an angled cap and a vent tube. The angled cap has an elbow shaped body, a proximal opening, and a distal opening. The proximal opening of the angled cap communicates with the distal opening so that liquid from the baby bottle is transmitted to the nipple. The elbow shaped body is shaped to maintain the proximal opening in non-coaxial alignment with the distal opening. The proximal opening includes an externally threaded portion adapted to threadedly receive a retaining cap that functions to lock the nipple over the proximal opening. The distal opening includes an internally threaded portion adapted to threadedly engage the baby bottle. The angled cap further includes a vent aperture through the angled cap adjacent the proximal opening.

Abstract: A nursing bottle having a rigid body, an open end, and an aperture, a flexible liner suspended from the open end of the body, a feeding nipple attachable to the open end of the body. An attached, slidably engagable, pump for pumping air into the chamber between the liner and body. The pump pressurizes the chamber and expels air from the liner. An air regulating device permits airflow in and out of the chamber in restricted quantity, so when pressure is applied to the pump, there is an increase of pressure within the chamber to force out the air trapped within the liner. The pump, also fashioned to be the protective storage hood for the nipple.

Abstract: The invention is an improved nursing bottle, providing a new valve within its bottom structure. A flexible disk is disposed within the bottom end cap of the nursing bottle, clamped at its periphery to the periphery of the base when the bottle is assembled. The disk has a ring of slits near its periphery which are closed when pressure inside the bottle equals ambient pressure. The slits are further sealed by contact with the base. Holes, which are sealed closed by contact with the disk, are provided in the base within a central portion which does not contact the slits in the disk. When pressure within the bottle drops, the disk bows upwardly in its center, opening the valve and allowing air to enter the bottle. When pressure within the bottle increases, the valve again closes.

Abstract: A drinking cup assembly including a cup having an open end; a cap adapted to enclose the open end, the cap including a drinking spout and an air vent and mating surfaces adjacent or incorporated into the drinking spout and the air vent; and a flow control valve including two stacks adapted to engage the mating surfaces, each of the two stacks having a concave valve face at a top portion thereof.

Abstract: A beverage container is provided with a hydrophobic vent consisting of a relatively thick and rigid disc-shaped piece of macroporous plastic having pore sizes averaging from 7-350 microns. The vent can be welded, molded or secured to the sidewall, bottom or cap of a plastic beverage container thus eliminating all moving parts. The macroporous plastic is resistant to oxidative abrasion, contamination and wetting and is strong enough to resist breakage. In one embodiment a baby bottle is provided which consists of a plastic bottle body, a nipple, and means for fastening the nipple to the bottle body. The bottle body is provided with a macroporous plastic vent which can be welded, molded or secured to the sidewall or bottom of the bottle body thus eliminating all moving parts. The bottle body can be washed repeatedly as a single unit with the vent intact.

Abstract: A drinking device including a body having an open end and for containing a liquid, and a lid for sealingly closing the open end of the body. The lid has an outlet incorporating a first one-way valve for dispensing liquid from the body upon the application of suction at the outlet and an inlet incorporating a second one-way valve for air intake to automatically balance the internal pressure within the body with external pressure outside the body while liquid is being dispensed. The first valve includes a chamber having a resiliently deformable wall including a hole in communication with the outlet. The hole is normally closed by being pressed against an internal surface of the body by the resilience of the wall and is openable upon the application of suction.