Abstract: A digital pressure canner and related methods of operation that provide for improved safety and consistency during a food canning process by reducing temperature over and undershoot. The digital pressure canner includes a digital control operating with inputs from digital sensors to accurately control the canning temperature during the canning process. By reducing over and undershoot of canning temperatures, foods within the pressure canner are maintained at temperatures sufficient to kill any bacteria or microorganisms for the entire canning cycle. In order to verify operation of the digital canner at sufficient canning temperatures, mechanical safety devices, for example, a pressure relief valve can be utilized in conjunction with digital controllers and sensors to provide audible and visual feedback to a user during the canning process.

Abstract: A lid for a food processing device with a rotating blade within a vessel has an one-way valve for allowing air to escape the vessel.

Abstract: An electric storage device pressure regulating apparatus includes: a case in an internal portion of which is disposed a regulating chamber that communicates with a space in a vessel by an opening portion; a semipermeable membrane that seals the opening portion; a check valve that stops discharging of the gas out of the vessel from inside the regulating chamber when the internal pressure of the regulating chamber is less than or equal to a predetermined value, and that discharges the gas out of the vessel from inside the regulating chamber when the internal pressure of the regulating chamber exceeds the value; and a communicating pipe that communicates between a space inside the regulating chamber and a space inside the vessel and extends from the case to an electric storage device main body.

Abstract: A recharging cap to maintain the carbonation and freshness of a beverage. The cap may include a gas injection valve and a pressure relief valve. Carbonation may be injected through the gas injection valve. The pressure relief valve may remove any gasses from the beverage container that may have a negative impact on the freshness of the beverage. The pressure relief valve may be activated by an activation component.

Abstract: The invention relates to a valve unit for a pressure vessel, the latter consisting of a receptacle and a lid which can be placed on said receptacle in such a way as to make it pressure-tight and said valve unit including: a safety function, pressure-relief function and pressure indicator function; adjustable indicator levels and pressure levels; an indicator pin (4) or indicator piston (10) which is supported against an indicator spring (7), can move in axial direction and bears on its portion becoming visible upon pressurization, due to its emergence from a valve housing (12), indicator rings, for example, for indicating the pressure inside the vessel; and comprising a valve body (5) which is movable in axial direction against the action of an exhaust steam spring (6) and, in the closed position, rests against a seal seat (19), lifting off from this, when a given pressure inside the vessel is exceeded, to uncover a pressure-relief aperture (20), in which case both the indicator spring (7) and the exhaust ste

Abstract: A safety device for a fluid storage tank having a first port for filling the tank with fuel oil and a second port for allowing airflow therethrough is disclosed. The safety device includes a tubular body having a first open end and a second open end connectable to the second port, and a flow check valve contained within the tubular body and configured to remain open when air flows through the safety device and configured to close based on a predetermined fluid force of the fuel oil through the safety device. Related systems and methods are also disclosed.

Abstract: A vacuum storage container having a container body, a check valve and a lid with an outer rim surrounding a diaphragm. A vacuum pump is engagable with the check valve to remove air from the interior of the container to create a vacuum in the container. The diaphragm is pushed inward by atmospheric forces upon removal of the air until the diaphragm touches and conforms to at least upper exposed surfaces of the contents of the container. The storage container aids in preventing degradation of the contents of the container by maintaining the contents free from the degrading effects of air and by substantially immobilizing the contents during movement of the container to protect the contents from breakage and bruising.

Abstract: A filler cap for a fuel tank wherein, when a pressure increases in the fuel tank, the valve body moves upward so an upper peripheral edge part of the valve body may be contacted to a first surface of shoulder cylinder portion, thereby shutting down a connection between a second space of cylinder main body and a third space connected to atmosphere. When the pressure in the fuel tank exceeds a pressure for a deformation strength of the valve body, a central part of the valve body enters into the third space causing deformation to shorten the outer diameter thereof; in the peripheral part of the valve body a concave portion not contacted to a lower end of a third surface that forms the third space, and the second space and the third space are connected via a space of this concave portion to release excessive pressure.

Abstract: The invention relates to a valve plug (1) for sealing a container opening, comprising a valve body (2) that can be placed on the container opening and is made of a first, rigid plastic material and a valve element (3) that is integrally connected to the valve body (2) and made of a second, elastic plastic material, which is more elastic than the first plastic material, wherein the valve element (3) has a sealing surface section (6) that can be placed in a sealing manner on a contact edge and a connecting part (8), which extends from a sealing surface section (6) radially through an opening in the valve body (2) to a retaining section (10) held on the outer circumference of the valve body, wherein the sealing surface section (6) is held by the connecting part without axial support of the sealing surface section (6).

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: A component of a fuel system includes a fuel cap having a head portion connected to a neck portion. The head portion defines: a fluid pressure relief conduit and a relief valve passage that extends into and through the head portion that terminates at a valve head opening formed by an inner surface of the head portion. The inner surface of the head portion and the inner surface of the neck portion cooperate to form a fuel cap cavity. The fluid cap cavity is fluidly-connected to the fluid pressure relief conduit by way of the valve head opening formed by the inner surface of the head portion. A relief valve is movably arranged within the relief valve passage for permitting selective fluid communication of the fuel cap cavity with the fluid pressure relief conduit. A locking apparatus is arranged within the fuel cap cavity.

Abstract: A vacuum receptacle lid for easy sealing includes a lid body that closes and opens an inlet portion of a receptacle body provided with a space containing contents, a valve installation hole formed at a part thereof, at least one air vent hole, and a packing installation groove which is opened downwardly in a C shape inside a rim thereof. A check valve providing a combining projection at a bottom surface of a body portion enclosing the air vent hole is inserted into and combined with the valve installation hole and exhausts air of the inside of the receptacle body via the air vent hole blocking inflow of external air by enclosing, opening and closing the air vent hole. A packing is accommodated and installed at the packing installation groove and includes upper, lower, and intermediate contact portions which have a cross-section of a zigzag shape.

Abstract: Embodiments of the present disclosure are directed towards a venting hatch having a base configured to couple to a storage container, wherein the base comprises a central opening configured to be exposed to an opening of the storage container, a cap coupled to the base, a seal disposed between the base and the cap, and an actuating mechanism configured to exert a biasing force on the seal to bias the seal against an annular lip of the base, wherein the actuating mechanism is disposed on an exterior surface of the cap.

Abstract: A fluid supply for a liquid sprayer includes a collapsible liner for holding the liquid; a cup for supporting the collapsible liner; a lid for connecting to the cup; and an air relief valve. The collapsible liner is secured relative to the lid and the cup. The lid includes an opening for connecting the lid to the pump.

Abstract: A leak proof/resistant drinking lid (10) is provided for use with beverage container. The lid (10) includes a manually actuated valve stem (16) mounted to a housing (14), a drinking port (18) extending through the housing (14), a drinking valve head (20) carried on the stem (16), a pressure relief port (22) extending through the drinking valve head (20), and a pressure relief valve head (24) mounted to the stem 16. The pressure relief valve head (24) is releasably mounted to the stem (16) by a connector (26). A resilient member (28) is sandwiched between the stem (16) and the drinking valve head (20) to transmit an actuating force from the stem (16) to the drinking valve head (20) and to allow the stem (16) and the pressure relief valve head (24) to translate relative to the drinking valve head (20).

Abstract: A vacuum receptacle lid for easy sealing includes a lid body that closes and opens an inlet portion of a receptacle body provided with a space containing contents, and includes a valve installation hole formed at a part thereof, at least one air vent hole, and a packing installation groove which is opened downwardly in a C shape inside a rim thereof, a check valve that is provided a combining projection at a bottom surface of a body portion enclosing the air vent hole, is inserted into and combined with the valve installation hole, and exhausts air of the inside of the receptacle body via the air vent hole and blocks inflow of external air by enclosing, opening and closing the air vent hole, and a packing that is accommodated and installed at the packing installation groove, and includes an upper contact portion coming into contact with an upper surface of the packing installation groove, a lower contact portion coming into contact with the receptacle body, and an intermediate contact portion of which ends ar

Abstract: A beverage container lid for a container base having a reservoir, the lid comprising a shell removably mountable on the base comprising a first drink passage that extends through the shell and communicates with ambient and a cartridge removably engageable to the shell. A second drink passage is in communication with the first drink passage and is formed between an outer surface of the cartridge and inner surface of the shell. The cartridge comprises a valve that is moveable between an open condition and closed condition to control communication between the reservoir and second drink passage.

Abstract: Provided are a packaging container for a microwave oven that excels in the sealing performance between a container body and lid, and that at heating/cooking by a microwave oven, maintains the internal pressure of the container for a given period of time to thereby enhance the taste of contents through steaming effect, and that thereafter, can spontaneously open with certainty from a steam releasing seal part; and an efficient process for manufacturing the packaging container. In the packaging container for microwave oven having a lid heat-sealed to the periphery of a flange part of container body made of a synthetic resin so as to attain hermetic sealing, at least one steam releasing seal part with a weakened part is disposed inside the peripheral seal part of the flange part at a position separate from the peripheral seal part.

Abstract: This invention relates to a vertical exhaust type sealing closure for sealed container, comprising: a closure body and a chute seat provided in the axial direction thereof; an air plug provided in the chute seat; a piston provided in the chute seat and above the air plug as well, an operating portion being combined at the upper end of the piston; when the operating portion is grasped to conduct continuous up-to-down reciprocating motion of the piston, opening and closing action of the air plug can be produced so as to extract the air contained in the sealed container.

Abstract: A container for storing and injecting a liquid sealant for sealing and closing a puncture hole of a pneumatic tire includes a container body for storing the sealant. An outlet for injecting the sealant to outside opens in a lid securing portion of the container body, and an outer lid member having a sealant path therethrough is connected to the lid securing portion and communicates the sealant path with an interior space of the container body through the outlet. An inner lid member is press-fitted into the outlet and maintained in a closure position for tightly closing the outlet. The inner lid member can be forced from the closure position into inside of the sealant path, by the pressure of the sealant in the container body and/or by the pressure of gas above the sealant. A connector member connects the inner lid member to the lid securing portion or the outer lid member so as to be movable from the closure position to the interior of the sealant path.

Abstract: A fluid dispensing system for efficiently rapidly dispensing fluid for a user to drink. The fluid dispensing system generally includes a container including an upper end, a lower end, a cavity and an upper opening, wherein the upper end is opposite the lower end, wherein the upper opening extends within the upper end and wherein the cavity extends from the upper opening of the upper end toward the lower end. A release valve extends within the container, wherein the release valve includes a channel extending through the release valve and wherein the release valve selectively seals the channel.

Abstract: Water-tight battery powered appliances, for example personal care appliances such as razors and toothbrushes, are provided. The appliances include a housing having a seal that allows gases, e.g., hydrogen, to vent from the appliance without allowing water to enter.

Abstract: Disclosed is a closure for a container wherein the container may experience an excessive buildup of internal pressure. The closure is equipped with a “blowout” portion which partially separates from the remaining closure portion if internal pressure exceeds a predetermined limit. The separation occurs at a line of weakness. The line of weakness is specially designed to withstand external, incidental pressure resulting from normal handling yet fracture in a controlled fashion should internal pressure exceed a predetermined amount. In this way inconvenience and possible hazard is avoided from a closure completely separating from the container from excessive pressure.

Abstract: A storage container for storing and preserving food items includes a base providing a storage cavity and an attachable lid. To evacuate air from the storage cavity after the base and lid have been attached, the storage container may include a one-way valve element communicating with the storage cavity. The overall storage container can be sufficiently rigid so that it has an initial size and volume when in its un-evacuated condition. During evacuation, the air pressure within the storage cavity is reduced compared to the air pressure of the surrounding environment. This pressure differential can result in a compressive force being applied about the container. At least one of the base or lid can be made relatively flexible so that, when evacuated, the volume of the storage container is reduced.

Abstract: A storage container for storing food items includes a base providing a storage cavity accessible by an opening and a detachable lid for covering the opening and enclosing the storage cavity. The lid may include a one-way valve to facilitate evacuation of the storage cavity after the lid has been attached. To provide a substantially air tight seal between the base and lid, a sealing member is included. The sealing member can be comprised of any suitable resilient material such as a thermoplastic elastomer. The sealing member can be integrally bonded to either the base or the lid by, for example, an overmolding process or a co-extrusion process.

Abstract: A rigid container for a particulate product with enhanced top load support includes an interior volume formed by a base, a surrounding wall member upstanding from the base, and an opening formed in a top. A particulate product, such as coffee, is provided in the interior volume, and is provided in sufficient quantity to fill the interior volume up to a predetermined minimum headspace. The predetermined minimum headspace is that headspace which produces a top load ratio of at least 3:1; where the top load ratio is defined as a ratio of the top load force sufficient to cause a 0.30? deflection in the container when filled to the top load force sufficient to cause a 0.30? deflection in the container when empty. In a preferred embodiment, the container is made of plastic and includes a flexible closure attached to the top and spanning the top opening.

Abstract: A vacuum storage container having a container body, a check valve and a lid with an outer rim surrounding a diaphragm. A vacuum pump is engagable with the check valve to remove air from the interior of the container to create a vacuum in the container. The diaphragm is pushed inward by atmospheric forces upon removal of the air until the diaphragm touches and conforms to at least upper exposed surfaces of the contents of the container. The storage container aids in preventing degradation of the contents of the container by maintaining the contents free from the degrading effects of air and by substantially immobilizing the contents during movement of the container to protect the contents from breakage and bruising.

Abstract: The present invention relates to an airtight preservation system of a consumer fluid within a container, and in particular a system for the preservation of said fluid, typically intended for alimentary consumption, from contamination by contact with outside atmosphere, in particular during the phase of delivery. The system according to the present invention is of easy installation, by virtue of a compact structure applicable to any container size and of an operation marked by utmost rationality.

Abstract: An airtight container is provided with a venting apparatus. The venting apparatus includes a flexible housing unit and a check valve disposed in the housing unit. The flexible housing unit includes a chamber defined therein, an upper aperture in communication with the chamber, a lower aperture in communication with the chamber and an external annular groove defined in the periphery for receiving an edge of an aperture defined in an airtight container. The check valve prevents air from entering the airtight container through the upper and lower apertures sequentially but allows air to leave the airtight container through the lower and upper apertures sequentially.

Abstract: A pressure tank includes a metallic vessel, a plastic liner received in the metallic vessel, a flexible diaphragm, two metallic joints, two anti-leak assemblies and a nozzle coupled to the metallic joints respectively. The metallic vessel includes upper and lower shells. The upper shell defines a first planar area on a side thereof and a second planar area on a top thereof. The lower shell defines a third planar area therebottom. The flexible diaphragm divides said metallic vessel into a storage space and a pneumatic room. The metallic joints are mounted on the side and top of the upper shell respectively and are in communication with the storage space. The two anti-leak assemblies provide leakproof connection between the metallic joints and the plastic liner. Additionally, the nozzle is mounted on the third planar area to be in communication with the pneumatic room.

Abstract: The screw cap of plastic for closing a filling and/or removal opening of a container for the transport and storage of liquids is equipped with a plug, in which a venting and aerating device is integrated. The screw cap has a sealing cap; and a protective cover, which completely covers the screw cap and protects the screw cap against contamination.

Abstract: The invention relates to a closure for a container that holds a free-flowing product. The container is characterized by the following: a fixed lower part which can be fastened to a container neck that surrounds a container opening in order to seal said neck; a cover comprising a protruding connecting piece that forms a passage for the free-flowing product; a displaceable upper part which can be coaxially displaced on the lower part in and against the direction of the container between an outer resting position and an inner actuating position; a breaker or dish-shaped diaphragm valve which has a base consisting at least of a flexible elastic material and whose upper edge seals the underside of the upper part; perforations in the base of the diaphragm valve which are closed in the testing position of the upper part; and a diameter of the base that is greater than the inner cross section of the connecting piece.

Abstract: A cap assembly is provided that includes a cap comprising an inner surface and an outer surface, a tip extending from the outer surface of the cap, wherein the tip includes an aperture therethrough operable to dispense the fluid stored within the dispenser. The cap assembly also includes a stem extending inward from the inner surface of the cap, wherein the stem is axially aligned and coupled in flow communication with the aperture of the tip. The stem includes a release valve assembly positioned along a length of the stem, wherein the release valve assembly facilitates creating a sealed surface therein and substantially prevents the liquid from passing out of the dispenser. The cap assembly further includes a stabilizing valve assembly extending from the inner surface of the cap to the outer surface of the cap.

Abstract: A relief valve including a generally cylindrical housing with first and second openings. The first opening is defined by a flange having an internal shoulder located adjacent the first opening. A pin is provided in the housing and has a first end and a second end opposite of the first end. A spring is positioned about the pin. A seal is located at the second end of the pin and adjacent the second opening of the housing. A clip is located at the first end of the pin and engages the internal shoulder of the flange to compress the spring between the clip and the seal.

Abstract: A packaging system useful for roast and ground coffee, having a container with a bottom, a top, and a body enclosing a perimeter between the bottom and the top. A flexible closure is removably attached and sealed to the protuberance so that the closure seals the interior volume of the container.

Abstract: The invention relates to an element for controlling filling and/or drawing of a pressurized gas, to be mounted in an opening of a tank (1), comprising a body (21) provided with at least one device (8) for controlling the circulation of gas placed between a first end, which has an opening (31) forming an inlet and/or an outlet for the gas with regard to the tank, and a second end for communicating with the inside of the tank.

Abstract: A pressure cap having a generally cylindrical hollow body with a semispherical cap having an orifice defined within and passing through said cap, a valve stem passing through and of smaller cross-section than the orifice, a valve member supported by the valve stem within the hollow body, a valve seat surrounding the inner end of the orifice and upon which the valve member is normally seated so as to close the orifice, and mateable threading to attach to an existing pipe, or attach by frictional fit. It may also have a rubberized flange to fit over a drain line for pressuring a drain and any of a variety of valve stem configurations to accommodate different pump systems and access requirements. Further, a method for clearing an obstructed pipe using a pressure cap as disclosed. In another embodiment a balloon is positioned within the pipe to receive pressurized air until bursting, thereby sending a blast of air down the pipe to clear obstructions.

Abstract: A vacuum fresh-keeping cover includes an upper cover, a top of which is connected with an air suction-ventilation device, a lower rim of which is connected with a soft gasket that can be suppressed on any horizontal surface, and an interior of which is formed with a container space. When a barometric value of the container space gets larger, the air suction-ventilation device is activated to expel out air in the container space continuously, to keep the container space at a near vacuum condition for preserving objects or food. When pulling up a touching element of the air suction-ventilation device, the air in the container space is drained out by the air suction-ventilation device to quickly remove the upper cover, to facilitate consumers for use, and to conveniently separate the air suction-ventilation device from the upper cover, for easily washing the upper cover with water.

Abstract: A plumbing end cap that is designed to assist a plumber in removing the air in an underground piping system just prior to testing the system with water. The end cap includes a small valve stem that is fixedly attached to the end cap prior to the end cap being attached to the terminal end of an open pipe. The end cap allows a plumber to eliminate the need to retest a closed system for leaks in the event the water level drops during such a test, due to air remaining in the closed system.

Abstract: A structure of vacuum sealing container for food and other objects that can prevent reverse flow of air while preventing content and water inside the vacuum sealing container. The vacuum sealing container is able to create a vacuum condition so that a content such as food or medicine can be stored inside the vacuum sealing container for a long period of time. The vacuum sealing container has a check valve that allows to expel air inside the vacuum sealing container to the outside to create a substantially vacuum condition, a re-sealable zipper that can air-tightly close the vacuum sealing container. The check valve is made of films that prevents reverse flow of air, part of which includes moisture permeation waterproof material to prevent flow of liquid inside the vacuum sealing container to the outside.

Abstract: Sealing and breathing valve assembly for accumulators comprising: at least one substantially tubular collar associated to the cover of said accumulator and suitable for connecting the external environment with one or more breathing ducts made in said cover; an elastic cap of a substantially tubular shape closed by a bottom amovably coupled to the external surface of said tubular collar. Said cap has at least one first part of a substantially cylindrical surface next to said bottom with a thickness reduced with respect to the remaining part next to the bottom of said cap, said first cap having a radial elastic deformation with respect to the remaining part working as a sealing function.

Abstract: A beverage container for a carbonated beverage includes a floating hollow insert (1) comprising an upper moulding (2) and a lower moulding (3) defining a chamber for containing gas, a first one-way duck-bill type valve (4) integrally formed with the upper moulding (2) at the bottom of a down pipe (6) and arranged to allow gas to enter the chamber and a second duckbill valve (5) integrally formed with the lower moulding (3) and arranged to allow gas to exit the chamber and be jetted into the beverage upon opening the beverage container.

Abstract: A filter assembly is provided that includes a hood, a drain manifold, a filter disposed between the hood and the drain manifold, a drainage space that is disposed between and in fluid communication with both the filter medium and the drain manifold, a check valve that is configured to permit air to escape but not to enter the drainage space so that a siphon can be established that draws additional fluid through the filter medium and into the drain manifold, the siphon continuing until air entering the hood disrupts the siphon, and a check valve cap that is configured to permit air to escape the check valve while preserving an air-filled void above the check valve when the filter assembly is submerged.

Abstract: A cooking apparatus includes a cooking vessel and a lid for covering the cooking vessel. The cooking apparatus also may include an exhaust tube for bleeding off pressure within the cooking vessel, in which a portion of the exhaust tube is positioned above the lid when said lid covers said cooking vessel. In another embodiment, the cooking apparatus includes a first O-ring gaskets for forming a first seal between the cooking vessel and the lid, and a second O-ring gasket for forming a second seal between the cooking vessel and the lid. A method for reducing pressure includes the steps of providing a vessel and covering the vessel with a lid. The method also includes the steps of positioning a portion of an exhaust tube above the lid when the lid covers the vessel and bleeding off at least a portion of the pressure inside the vessel through the exhaust tube.

Abstract: A vacuum pump valve includes a valve body and a suction diaphragm. The valve body includes a sealing platform sealedly attached on the container at the opening thereof, and a guiding sleeve upwardly extended from the sealing platform to form a suction channel, wherein the sealing platform has an operation slot formed thereon at a position within the suction channel and at least a through ventilating groove communicating the receiving cavity of the container with an exterior thereof. The suction diaphragm is disposed within the suction channel of the valve body, including an enlarged sealing head adapted to seal on the sealing platform to enclose the ventilating groove thereof, and a guiding shaft extended from the sealing head to slidably mounted at the sealing platform at the operation slot to move the sealing head between a releasing position and a sealing position.

Abstract: A container system for microwave oven cooking comprises a main body, a lid, and a cap disposed in a recess in the lid. The cap is movable upward and downward through a limited range in the recess depending on steam pressure, and grooves, formed in a side wall of the cap, or in a side wall of the recess, allow escape of steam when the cap is moved upward as a result of steam pressure. The lid is also allowed to move upward and downward relative to the main container body in response to steam pressure, and, when the lid is moved upward, an additional path for the escape of stem is provided at the location where the rims of the lid and main body meet each other.

Abstract: Packaging for a can containing ground roasted coffee packed under atmospheric pressure and having a flexible peel-off lid which is vented to allow the escape of a buildup of carbon dioxide gases. A spacing structure prevents the vent valve in the lid from being closed by contact with the plastic overcap. The spacing structure may include bosses on the overcap which engage the vent valve or a pocket in the overcap which allows the flexible lid to reach a maximum height without engaging the overcap. A permanently opened passageway may be provided between the plastic overcap and the rim of the can to further facilitate the escape of carbon dioxide.

Abstract: Container for storing food products including a base defining a product support surface for supporting the food product and a cover releasably engaging with the base such that when the cover engages with the base, a storage compartment is defined by the cover and the base. The cover includes an air control unit for controlling air pressure in the storage compartment and a window extending downward from the air control unit to surround food products in the storage compartment. A product supported on the product support surface of the base is visible through the window when the cover engages with the base. By providing the window as part of the cover, the base is separable from the window to thereby expose the product support surface of the base so that cakes can be easily placed on the product support surface and then enclosed by the cover.

Abstract: A container system for microwave oven cooking comprises a main body, a lid, and a cap disposed in a recess in the lid. The cap is movable upward and downward through a limited range in the recess depending on steam pressure, and grooves, formed in a side wall of the cap, or in a side wall of the recess, allow escape of steam when the cap is moved upward as a result of steam pressure. The lid is also allowed to move upward and downward relative to the main container body in response to steam pressure, and, when the lid is moved upward, an additional path for the escape of stem is provided at the location where the rims of the lid and main body meet each other.

Abstract: An improved no-spill cup construction and valve assembly which provides an extremely secure seal against accidental liquid flow from the cup spout. The act of sucking at the cup spout creates negative pressure or a partial vacuum against a valve near the spout, causing the valve to invert which unblocks an opening in the valve. When the opening is unblocked, liquid can flow freely through the valve and spout. When not in use, the valve sits in a resting, closed position, with the valve pressed against a center seal-off, sealing off the opening in the valve assembly. The closed position provides an extremely secure seal against fluid leakage, such that inadvertent spills or even deliberate attempts to force liquid outside of the cup, such as by turning the cup upside down, or shaking the cup, are ineffective. The cup assembly further allows liquid flow to be regulated between regular or maximum flow and minimal flow levels or rates by rotating the position of the valve assembly in the cover of the cup.