Abstract: A guard for preventing spilling or splashing of hot or cold liquids from a drinking container when the container is moved or when drinking therefrom. The guard includes a lower lid attached to the drinking container and an upper lid attachable to the lower lid which is selectively movable between an open position and a closed position. The lower lid includes a resilient sidewall for sealably engaging the inner surface of the drinking container to prevent the beverage from flowing therebetween when the container is moved or when drinking therefrom. A plurality of openings evenly spaced around the center of the lower lid are also provided in the lower lid for allowing the beverage to pass from beneath the lower lid to a position thereabove when the upper lid is in the open position.

Abstract: A water bottle-straw assembly comprising a screw-threaded cap base including a lift-lower cap attached at one side thereof and a through hole in which a suction base is inserted. The suction base has a protruding suction end having a valve and a flange providing an air guiding groove. A straw is inserted into the suction base and a flexible tube is telescopically connected to the lower end of the straw to allow use with containers of varying sizes.

Abstract: A lid (1) for a drinks container has a mouthpiece (6) provided with a valve (2) which comprises a membrane (7) of resiliently flexible material formed generally at its center with at least one slit or other piercing (8) which is normally sealed. The membrane (7) is dished inwardly of the mouthpiece, but when suction is applied, it is caused to invert to allow liquid to be drawn through its slit(s) (8). The valve (2) may instead be provided in the top of a drinks carton or in the end of a drinking straw.

Abstract: A leakage preventive device is provided for use on a milk bottle or the like to help prevent the milk contained in the bottle from leaking out when the bottle falls aside or is subjected to violent shaking. The leakage preventive device comprises: a mounting device having a cylindrical body formed with a hollowed inside serving as a passage for the liquid contained in the bottle; and an elastic valve member mounted on the mounting device. The elastic valve member is formed with a thick outer wall, which can be fitted tightly to the outer wall of the cylindrical body of the mounting device, and a substantially U-shaped inner ring, which can be linked to the outer wall. The U-shaped inner ring is made from an elastic material, allowing the U-shaped inner ring to urge forcibly against the inner wall of the cylindrical body when the teat is not being sucked; the U-shaped inner ring having an open end to define a chamber connected to the teat.

Abstract: A drinking vessel suitable for use as a trainer cup or the like comprises an open-mouthed generally cup-shaped container (2) and a lid (5) for the open mouth of the container. The lid has a mouthpiece (7) associated with it. Valve means (18) are provided to prevent flow of liquid from the interior of the container through the mouthpiece unless a predetermined level of suction is applied to the mouthpiece. Suction alone may be sufficient to withdraw liquid from the trainer cup.

Abstract: A beverage container is disclosed which includes a stackable cup and a stackable cover which have cooperating thread forms for selectively securing the cover to the cup in a substantially liquid-tight relationship. The cover has a beverage dispensing opening and a cap which is selectively operable to open and close the opening to prevent beverage in the container from being poured out of the opening and to selectively allow beverage to be poured or drunk from the opening.

Abstract: A locking device includes an internal closure cap having a threaded bore for engagement with the threads of a container or opening. The closure cap is structured with an upstanding stem which is open for discharging liquid. The outer surface of the stem has a rib gear section. A sleeve member superimpose the stem of the closure cap, whereby seals the tip. An annular shell surrounds the closure cap, and the sleeve member, controlling the engagement of the closure cap. However the sleeve member is structured with internal and external gearing formed to engage the outer ribbing of the closure cap and an internal ribbing within the annular shell, when raised vertically; whereby, a twisting action of the annular shell can be transferred to the closure cap for engaging and disengaging a threaded neck. A set of cylinders with marked flanges are positioned through the annular shell, superimposing the sleeve member, restricting its upward movement.

Abstract: A consumable beverage dispenser is provided having a collapsible beverage container, a valve assembly, and a flexible tube or straw. The collapsible beverage container has at least one opening and the valve assembly is secured to the container at the opening. The valve assembly includes a flexible diaphragm disposed across the flow path such that beverage flow is permitted only outwardly from the container. The flexible tube extends outwardly from the valve assembly. When a user exerts sucking action on the end of the flexible tube, beverage is made to flow from the container out through the one-way valve assembly and into the flexible tube. As beverage is withdrawn, the container collapses and, when the user stops drinking, the flexible diaphragm closes to prevent air and back flow from entering the container. In one embodiment, the flexible tube is slidable within the valve assembly between an open and a closed position.

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 lid assembly includes a lid body having a periphery containing a liquid discharge slot and an air vent arranged diametrically opposite to each other, and a center containing a passage located between the liquid discharge slot and the air vent, a rotary cap rotatably mounted on the top of the lid body and including a drive post extending downward from the bottom thereof, and extending through the passage, a control device mounted on the bottom of the lid body and secured to the drive post to rotate therewith. In such a manner, the control device can be rotated by the drive post to move between a first position where the liquid discharge slot and the air vent are closed by the control device, and a second position where the liquid discharge slot and the air vent are detached from and opened by the control device.

Abstract: A covered beverage container with an internal baffle which forces aroma laden vapor between the lid and the beverage in the container out openings in the lid when the container is tipped from the level position to the drinking position, thereby allowing the user to more fully enjoy the aroma of the beverage.

Abstract: A sipper cup including a cup assembly having a plurality of threaded grooves formed adjacent a top opening thereof. Further provided is a cap assembly having a spout integrally formed on an upper surface thereof. The cap assembly is equipped with a plurality of threaded grooves for allowing the screwable coupling of the cap assembly with the cup assembly. Such threaded grooves of the cap assembly and the cup assembly are adapted to allow air to pass therethrough. Also included is an elastomeric insert including a spout valve for allowing fluid to exit the spout of the cap assembly only upon the application of suction. In use, air is allowed to enter the cup through the threaded grooves thus compensating for the vacuum formed in the cup assembly upon the exiting of fluid from the spout.

Abstract: A leak resistant drink box holder for containing a drink box. The drink box holder includes a container having four sidewalls and a floor forming an internal cavity of a size to fit a substantial portion of the drink box. A lid that is sealably engageable with the container has an air inlet opening, an air regulating valve and a drinking spout with a fluid exit opening. The drinking spout is adapted to apply a suction from a user's mouth. A liquid outlet regulating valve is sealably engageable with the drinking spout. A straw have first and second ends is sealably engaged with the liquid outlet regulating valve at one end and is adapted to fit within the drink box at the other end.

Abstract: A drinking container includes a flexible, hollow body having a neck. There is closure member removably connected to the neck. There is a spout on the closure member. A filter device is operatively connected to the spout within the body. The filter device includes a filter, a passageway bypassing the filter and a movable valve member in the passageway which opens the passageway when the container is in upright position when the spout is on top. The valve member blocks the passageway when the container is inverted from the upright position or pressurized.

Abstract: An improved valve assembly spout is provided which contains a single hole or port at its uppermost portion. The improved spout is further provided with an inwardly extending, cylindrical straw-like member. Spout cavities are situated to either side of the straw-like member which facilitates entrapment of residual liquid contained within the spout after closure of the valve bridge is effected.

Abstract: A drinking device adapted for use by young children includes a cap adapted to sealingly cover a drinking cup. The cap has a spout and a mount, and a valve cartridge removably attached to the mount for controlling fluid flow through the spout. The valve cartridge is removable for easy cleaning or replacement, and includes a valve holder that manually, frictionally pressfits into a barrel-shaped mounting flange on the cap. The valve holder includes a grip to facilitate removal of the valve cartridge from the cap. A valve retainer snap-attaches to the valve holder to hold a silicon rubber valve in place on the valve holder. The valve includes a head section with slits that define cooperating valve fingers that cooperate to selectively allow fluid to flow out of the spout or to allow air to flow back into the cup, thus allowing the valve to operate as a single and only valve on the drinking cup.

Abstract: A self-sealing drinking container includes a cup body having a hollow interior for holding and dispensing a liquid, and a lid assembly which fits sealingly on the cup body. The lid assembly has an inlet passage with an inlet valve in communication therewith, and an outlet passage with an outlet valve in communication therewith, each of the valves including a resiliently flexible diaphragm member. In a preferred embodiment, each of the inlet and outlet valves includes a cage having an open top and an open bottom to allow fluid passage therethrough, the cage having a seat formed therein for receiving a diaphragm member. The diaphragm member is located seatably into the seat so as to selectively seal thereagainst and thereby prevent fluid flow therepast. A locator post in each cage centrally abuts the diaphragm member thereof to ensure its seating.

Abstract: A spill-proof covered drinking container has an annular protruding drinking spout that provides a relatively large number of separate drinking ports around the spout circumference. An annular suction-responsive valve means is located within the drinking spout for controlling outflow of liquid through the drinking ports, such that liquid flow is confined to the port, or ports, in physical contact with the user's mouth. The user can drink from any point around the spout circumference.

Abstract: A spill-proof cap or lid for a standard beverage container, such as a soft drink, water and other liquid bottle, includes a housing which is configured to fit over the container opening. The housing includes top and bottom, each of which includes a recess. A spout is mounted in the top recess and is pivotable between open and closed positions. A flow control section extends generally vertically in the bottom recess for receiving a flow control member. The flow control member is removably positioned in the flow control section and includes a flow control valve and an air intake valve. The spout includes at least one passageway which is in fluid communication with the bottom recess through a passageway extending between the top and bottom of the housing. In use, the cap is substituted for the conventional cap or lid that the typical soft drink, water or other liquid bottle is equipped with.

Abstract: A closure cap valve apparatus for mounting on the top of a beverage container. A piston valve within the cap is biased towards closure to prevent spillage. Additionally, pressure increase within the container is directed to increase sealing force of seals positioned on the piston and thus prevents the release of pressure from the container, allowing the closure to be used for carbonated beverages. The piston is displaced from the closed position, even when the container internal pressure is increased, by the user sucking on a mouth piece.

Abstract: A disposable dome lid is provided for use with a drinking cup such beverage cups used for the sale of hot and cold beverages. The top surface of a dome lid is elevated above the top surface of the beverage cup rim, when in place. The dome lid is configured so as to make a plug fit onto the beverage cup by the beverage cup rim extending into a downwardly facing recess formed for that purpose. A side surface depends downwardly from a substantially planar top surface of the lid, and is inset from the cup rim engaging recess. A portion of the side surface is displaced outwardly towards the outer periphery of the dome lid, and thus provides a surface for engaging the lower lip of the mouth of the user. A tear-back flap is defined by fault lines stamped into the top surface and a "U"-shaped hinge formed in the top surface.

Abstract: A drinks can with a non-resealable ring pull seal includes an auxiliary sealing member supported inside the can by a leaf spring which urges it automatically to seal the opening formed on removal of the ring pull seal, the auxiliary member having an upstanding projection engageable by the user to depress the sealing member into the can for access to the contents.

Abstract: A container lid includes a flap region that is selectively displaceable between a static raised position and a static depressed position. A flap is cut out of the flap region and is substantially integral with the flap region when the flap region is in the static raised position. When the flap region is displaced to the static depressed position, the flap separates from the flap region enabling liquid to flow therethrough. When the flap region is returned to the static raised position, the flap is again substantially integral with the flap region to thereby close the lid and prevent liquid from escaping. A knob is provided preferably integral with the flap region to facilitate displacement of the flap region.

Abstract: Apparatus for delivering liquid to the mouth of an individual includes a hollow body portion having an inlet end and an outlet having at least one dispensing slit, and structure connected to the hollow body portion exerting forces on the hollow body portion and closure continuously urging the at least one dispensing slit to closed condition.

Abstract: A cap system for use with a beverage container that has automatic opening and closing capability is provided. A buoyant sliding cover is maintained partially within a casing or housing device in the cap and partially within the container itself. When the container is tilted to a drinking position, buoyancy forces act on the cover and force it to slide, thereby exposing an opening in the cap and allowing for the consumption of the liquid. When the container is returned to an upright, non-drinking position, a spring mechanism, built into the casing and attached to the sliding cover, acts to force the cover to a closed position, thereby covering the opening in the cap and preserving the integrity of the liquid inside.

Abstract: A cover 10 for a drink receptacle 12 wherein the cover 10 is provided with a pair of valve members 55 for simultaneously controlling the flow of fluid through a fluid supply chamber 26 and a vent chamber 27 by means of an actuator element 50 which is mounted for reciprocation between the base unit 20 and the lid unit 40 of the cover 10 by means of a handle element 51 which extends beyond the periphery of the base unit 20.

Abstract: A self-closing beverage lid including a lid portion adapted for sealable coupling with an open top end of a container. The lid portion has an opening therethrough adjacent to a peripheral edge thereof. A spring biased sealing member is selectively disposed over the opening within an interior of the lid portion.

Abstract: A drinking cup having a body portion and a removably attached cover including an offset drinking spout and an offset vent aperture. The drinking spout and the vent aperture are each surrounded by wall members which depend generally away from an interior surface of the cover. An air inlet flow control valve is coupled to the wall member surrounding the vent aperture while a liquid outlet flow control valve is coupled to the wall member surrounding the spout. Each flow control valve includes a domed elastomeric member containing a slit allowing for passage of a selected fluid therethrough. The domed portions are each surrounded by a generally circular isolating channel, and outside of each isolating channel is a perimetral portion for connecting the flow control valve to the depending wall portion of the cover. Fluids passing through the slits achieve substantially only a one-way passage as the domed curvature substantially prevents any backflow.

Abstract: A lid to be used to dose the opening of a cooperative container providing a user with a spout that is selectively closed and opened to permit a user to draw the liquid inside the container and, if accidentally dropped, to avoid spillage and/or leakage of its contents. A slidable door is activated by a user to selectively block the liquid from coming out through the spout. A locking mechanism to keep the lid firmly and removably secured to the container includes a several latching members that extend perpendicularly from the periphery of the lid and engage with a corresponding number of openings formed in a peripheral locking member positioned adjacent to the rim of the container's opening.

Abstract: A valve for a water dispenser including a housing, a resilient member, a slide, a button, a O-ring and an inlet connector, wherein the resilient and slide are fitted within the housing and the inlet connection is engaged with an outer end of the housing, characterized in that when the button is pressed by the teeth of an user, the slide will be forced to go further into the housing thereby moving an O-ring 34 away from the circular recess of the inlet connector and therefore enabling water to flow through the passage of the inlet connector and the interior of the housing into the mouth of the user.

Abstract: A method and apparatus for the generation of a foaming dispersion of bubbles in a carbonated beverage or other gas-containing liquid packaged in a can (120) or other sealed container. An initially liquid-free device (9) having an internal chamber with an inlet/outlet valve (130/150) assembly is placed in the can, which is then filled with the beverage. The can is sealed and pasteurized, which raises the internal pressure in the can to force some of the gasified beverage into the device through the inlet valve. The outlet valve holds the quantity of beverage in the internal chamber until the can is opened, whereupon the depressurization of the can opens the outlet valve to discharge the internal chamber through an orifice to initiate seed bubbles which form a head on the beverage. The method and apparatus are particularly applicable to producing a head on fermented alcoholic beverages to simulate draught beverages.

Abstract: A valve is provided which includes a dispensing spout and a spout insert. The spout insert includes a pair of upwardly extending posts which project up and into the spout. The spout urges the posts towards each other and a valve bridge extends between the posts and overlays a hole defined in the spout insert through which liquid flows when a suction force is applied to the spout. When no suction force is applied to the spout, the valve bridge closes the hole.

Abstract: A threaded closure for large-mouth containers has a handle which swings up or down on a horizontal pivot, and closes a vent hole when in the downward position. A pour spout rotates on an inclined off-vertical axis, to store the pour spout closely alongside the top surface of the closure, sealing off the pour spout, or to rotate outward to an upwardly inclined pouring position in which the spout is open. The vent hole in the top of the closure has a negative draft for a snap fit with a nipple or plug on the handle. Another preferred element of the closure construction is that the handle is held onto the closure body with polygonally shaped pegs extending into similarly shaped holes in the closure body. The handle thus tends to stay in different selected positions when pouring. The plastic handle itself is molded to a smaller reach width, so that it is stretched when assembled and continuously exerts a force inward against the closure body, reliably holding the pegs in the holes.

Abstract: A drinking cup has a cover which is formed with a drinking spout at one side and a vent at the other. Elements extend down from under the spout and the vent. A flow control element is provided and made of elastomeric material having a pair of spaced cavities on one side, each cavity having a floor at the bottom thereof. The cavities receive in frictional engagement respectively the lower ends of the elements. This engagement supports the flow control element with the floor of each cavity in sealed relation to its element. Each floor has a passage which is normally closed but opens on the occurrence of a pressure differential on opposite sides of the floor.

Abstract: A fluid container plug is disclosed in which, if a button of the plug is pressed, the content of the container can be discharged by inclining the container, and if another button is pressed, the container is locked shut, so that the container can be manipulated in a one touch manner, thereby making the use of the container convenient. The fluid container plug according to the present invention includes an outer casing with its upper and lower ends open, an inner casing installed within the outer casing keeping a gap with the outer casing; a discharge path formed through the lower open portion of the outer casing and along the gap through which the content of the container is discharged. An opening/closing member is installed within the inner casing in a reciprocating manner to open and close the lower opening portion of the outer casing.

Abstract: A commuter mug and holder assembly connectable onto the door of an automobile to supply a hot beverage to the driver or an occupant of the vehicle in the course of travel. The mug is formed by a container for the beverage and a removable lid therefor, the lid being divided into front and rear semi-circular sections each having an arcuate wall, below which is a flexible shutter disc hinged to the rear section thereof to normally seal the container whereby when the disc is deflected it then creates an outlet for the beverage in the front section whose arcuate wall is curved toward the outlet to define a drinking spoon. Pivoted on the wall of the rear section is actuator having lugs projecting therefrom to engage the disc whereby when the actuator is depressed by a user holding the mug, the disc is deflected so that the user may then drink from the drinking spoon the beverage flowing out of the outlet.

Abstract: This relates to a resealable lid and cup assembly and method for using the same. The resealable lid has an opening through which liquid flows and a valve mechanism for selectively closing the opening. The valve mechanism is provided on the underside of the lid and is biased to the open position by inward deflection of the side wall of the cup.

Abstract: A receptacle cover is disclosed incorporates an actuating trigger connected to a pair of biased valves that seal off the dispensing conduit and the relief vent from the top side of the cover. This construction isolates most of the linkage between the valves and the actuator from the contents of the receptacle. The actuator is a trigger located proximate the upper portion of a handle extending from the cover, and is linked to the valves by a wire that extends to, and moves, a rotating rod that is perpendicularly disposed in relation to the wire. The rod, in turn, is attached to the valves by additional wires that force them open against their proximate leaf springs. The dispensing conduit forms a plenum or chamber that functions in a manner similar to a straw by extending upwards from the cover. This construction prevents inadvertent leakage or fluid build up on the exterior of the receptacle.

Abstract: An automatically sealing cup composed generally of a cup body, a lid sealingly and releasably connected with the cup body, and an automatic sealing feature that includes, generally, a flexible tube communicating with the interior space of the cup body, an aperture in the lid through which the flexible tube sealingly passes, a pivotable handle associated with the lid wherein the position of the handle determines pinching or unpinching of the tube, and, consequently, sealed and open states, respectively, of the automatically sealing cup, and a biasing member associated with the lid which automatically biases the handle to provide the sealed state. To switch the automatically sealing cup to the open state in which liquid may be extracted therefrom through the tube, a user must continuously apply pressure to the handle, upon the cessation of which the automatically sealing cup automatically reverts to the sealed state.

Abstract: A canteen including a cylindrical container and a head threaded to the open top of the container, and also having a flip-up cap pivotally mounted on the head. A push-button is provided at the side of the head which, when actuated, flips up the cap to an pen position, and also pushes a spring-biased plunger away from the drinking hole to open the drinking hole. When the push-button is released, the spring-biased plunger moves to close the drinking hole. Accordingly, by operating a single push-button, the user causes the cap to flip up to an open position, and also causes the drinking hole to open, the drinking hole remaining open so long as the push-button is held by the operator in its actuated position.

Abstract: An improved drinking lid for a disposable coffee cup having an open top comprising a dome shaped cover having an air vent hole and conforming to the open top of the coffee cup. A peripheral rim is on the cover to engage in a seating manner, a lip on the open top of the coffee cup. A flexible drinking spout is formed in the cover, to allow coffee in the coffee cup to exit therefrom into a mouth of a person. A structure is for shielding the air vent hole in the cover, when the flexible drinking spout is not being used. An element is for coupling the flexible drinking spout to the shielding structure. When the flexible drinking spout is bent over to be used, the shielding structure will open to expose the air vent hole, to enable the coffee in the cup to better exit the flexible drinking spout.

Abstract: A kettle includes a kettle body, a kettle cap screwed on the kettle body, a cover member covering the kettle cap, and a sucker inserted through a hole in the kettle cap. One end of the kettle cap includes a pivot support seat onto which a resilient member is connected. A pressing board is fit onto the cover member and is engaged with the resilient member. The other end of the pressing board is formed with an engaging hook section which fits into a depression formed in the kettle cap. The pressing board simultaneously presses and folds the sucker to close flow therethrough. A prying member is pivotally disposed in the kettle cap. The front edge of the prying member has a trigger section located under the engaging hook section, whereby by pressing the prying member, the trigger section is able to move and separate the hook section from an engaging recess to uplift the pressing board and cover member.

Abstract: A pair of openings in the top of a container for liquids are normally closed by a pair of stoppers. The stoppers are mounted on the arms of a Y-shaped spring. The leg of the spring extends through a hole in the side of the container. The leg is connected to the upper end of a handle, which is connected to the container so that the handle pivots about the lower end of the handle. As the handle is pivoted, the leg of the spring is pulled outward through the hole in the side of the container. As the leg is pulled, the arms of the spring are pulled through a restraint, which pushes the arms together. This action pulls the stoppers away from the openings in the top of the container. The container also has a straw and a one-way valve. The valve allows air to enter the container, but does not allow liquid to spill from the container.

Abstract: An infant's bottle is provided with a valved cap adapted for quick and easy movement between open and closed positions. The valved cap includes a base member mounted by a threaded neck ring or the like over the mouth of a beverage container such as a baby bottle. The neck ring also retains a slide-fit valve sleeve on the base member for reciprocal motion between open and closed positions to respectively permit and prevent beverage flow from the bottle. A drinking mouthpiece such as a conventional nipple for infants or a ported spout for toddlers is mounted on the valve sleeve.

Abstract: A cup is provided with a flexible lip containing a duct having an end provided with a flexible valve which is opened by pinching the lip; the duct communicates with a receptacle containing the beverage and the wall of the receptacle is made from a flexible material so as to expand when a liquid is injected into the receptacle and to exert on the liquid a pressure tending to expel the liquid from the receptacle; a cover is provided for storing the cup and includes a filling and washing area.

Abstract: A drinking vessel comprises a hollow cup having an upper rim defining a mouth opening. A lid removably mounted on the cup extends across the mouth opening to prevent spilling of liquid from the cup. The lid includes a base so mounted on the cup and having a flange extending inwardly from the cup's rim partly across the mouth opening and defining a port aligned with an inner part of the mouth opening. The lid further includes a valve element in register with the port, a seal on the valve element underlying the flange, and an actuator adjoining the valve element and disposed laterally outwardly thereof, such that when the actuator is depressed by downward force of the user's thumb, the valve element pivots downwardly, separating the seal from the flange. A spring normally biases the valve element upwardly with the seal against the flange.

Abstract: Disclosed is a removable self-closing lid for covering a top of a container, wherein the container has an outer wall surface and a top with an opening for accessing into the container. The lid includes a cap, a pressure fitting and sealing perimeter lip for securing the cap over the container top, and a pouring aperture. Further included in the lid is an automatic leveraging mechanism which is activated by a user exerting pressure on a trigger, thereby opening the pouring aperture. The pouring aperture is automatically sealed when the leveraging means is deactivated by the user releasing the pressure on the trigger. Incorporated into the trigger is a leverage ridge that provides a fulcrum that slides over the container's outer wall surface during activation and deactivation.

Abstract: A self-sealing closure for sealing a receptacle is disclosed. The closure contains a lid having a depressed area and at least one orifice within the depressed area, and a shutter matching the orifice which contains a lever.The shutter is held against the orifice. The shutter contains a device for preventing the pushing of the shutter away from the orifice when force is applied to the lever in a direction substantially orthogonal to the plane of the orifice.

Abstract: A spill-proof closure for containers used in dispensing liquid beverages. The closure has a spout containing a thin membrane at or near the upper end. The thin membrane includes a through slit which remains closed except when external suction is applied during normal drinking.

Abstract: A drinking cup has a cover which is formed with a drinking spout at one side and a vent at the other. Elements extend down from under the spout and the vent. A flow control element is provided and made of elastomeric material having a pair of spaced cavities on one side, each cavity having a floor at the bottom thereof. The cavities receive in frictional engagement respectively the lower ends of the elements. This engagement supports the flow control element with the floor of each cavity in sealed relation to its element. Each floor has a passage which is normally closed but opens on the occurrence of a pressure differential on opposite sides of the floor.