Abstract: A vacuum-indicating closure includes a top wall 12 and a skirt 14 depending from the periphery of the skirt with a tamper-evident band 24 formed on the lower edge of the skirt. The top wall has a center deflectable portion 30 formed by a thinned circumferential hinge 32 and the deflectable portion is divided into pie-shaped segments 44 by a plurality of radially-extending thinned hinged 40. The center deflectable portion is moved between a convex position and a concave position with the presence or absence of vacuum within the container to which it is applied.

Abstract: An autoclave useful for pressure digestion of samples for chemical analysis, consisting of a closeable vessel containing the sample, which during operation sustains elevated temperatures and pressures. The autoclave has a PTFE (Teflon) beaker and lid, in direct contact with each other thus forming a tight seal with an excess-pressure release mechanism. The assembled vessel is held in a device that presses the sealing surfaces of the beaker and lid together, through pressure on a metallic lid support disc. The sealing surfaces of the beaker and lid are free-standing, which permits a direct release of excess-pressure and necessitates an extended clamping device for the lid support disc, which is fixed at a single point.

Abstract: A plastic closure for a container, such as a bottle having an externally threaded neck, has a top wall, an internally threaded sidewall, and a seal comprising outer and inner concentric sealing members that extend downwardly from an inner surface of the top wall. The outer sealing member extends downwardly farther than the inner sealing member and is substantially thicker than the inner sealing member. The outer sealing member is disposed to engage an outer corner of the rim of the neck of the bottle when the closure is threaded onto the bottle, and the inner sealing member is disposed to engage the top of the rim after engagement of the corner with the outer sealing member. The outer sealing member deflects outward slightly, and the inner sealing member deflects upwardly and inwardly.

Abstract: A bottle holder comprises a handle manually graspable by a user, a cap remover carried by the handle for receiving, gripping and removing the cap of the bottle, an attachment member fixed to the handle, open at one end, and having internal threads at the opposite end for threading onto the external threads of the bottle neck, a closure pivotally mounted to the attachment member either to a closed position closing its open end or to an open position, and an operator carried by the handle and mechanically coupled to the closure to enable the operator, when operated by the user, to move the closure to either its open position or to its close position with respect to the open end of the attachment member.

Abstract: A plastic bottle closure assembly comprising a plastic bottle having a threaded neck portion, a closure for engagement with the neck portion and a sealing plug. The sealing plug has an annular mating surface designed to engage an annular planer mating surface of the neck portion. The closure is provided with annular rib for engaging the plug so as to cause the inner mating surface of the plug to engage the mating section of neck portion of the bottle.

Abstract: A self-closing container closure which opens in response to overpressure in the container comprises a sealing plug connected to the closure by a plurality of flexible webs, the overall length of each of the webs being at least equal to the maximum distance between the attachments of the webs to the plug and closure as the plug moves between the open and closed positions.

Abstract: A tight screw cap having a cylindrical outside skirt threaded on the inside surrounding a pan bottom having a circular bottom wall surrounded by a cylindrical lateral wall connecting it to the upper edge of the outside skirt of the cap. The outside diameter of this lateral cylindrical wall corresponds to the inside diameter of the threaded upper end of the neck of the container, the length of the cylindrical wall being less than that of the cylindrical skirt.The bottom wall of the pan bottom is connected to its lateral cylindrical wall by a part in the shape of a crown of bitruncated section delimiting, at the periphery of the bottom wall, an annular groove of approximately annular section projecting, in relation to the bottom wall, from the same side as the free end of the outside skirt.

Abstract: A tamper-proof, tamper-edvident package includes a pill, capsule, ingestible or medicant bottle-holding container and a sealing lig thereover. The lid includes a flexible lip with a conical sealing surface surrounding the container and in angular juxtaposition upon assembly with a more rigid conical sealing surface on the container. A vacuum is drawn in a fixture holding the container and lid by evacuation of air. Upon subsequent exposure of the container/lid exteriors to ambient environmental air the flexible lip is snapped tight by differential pressure (higher on the exterior of the package) so that the lip sealing surface which was at an angle to the container seal surface, is in parallelism with the container seal surface resulting in a wide sealing band which is not breakable by normal hand pulling or twisting.

Abstract: A plastic linerless closure for sealing a container includes an integrated sealing mechanism forming at least a part of the top of the closure. The sealing mechanism includes a primary sealing region including a primary sealing flange adapted to engage the top of the container neck during application of the closure, an inner sealing region having an outwardly facing sealing surface which is situated contiguous with the inner surface of the container neck during application of the closure to the container neck and a central non-planar, e.g. concave, region. The inner sealing region is connected in an integrated manner to the primary sealing region and the central region, and the primary sealing flange is connected to the closure top by a hinge region.

Abstract: A vacuum drainage bottle includes a chamber for receiving fluids from a patient and a pressure indicator (9,21) for measuring the pressure in the chamber. Prior to use, the pressure indicator is isolated from the chamber by means of a breakable seal. The seal may be in the form of a recessed membrane (43), which may be ruptured by depressing the pressure indicator, causing a ball (45) to bear against the membrane (43).

Abstract: A container closure includes liner adapted to seal a container having contents under vacuum pressure, and a closure member securing the liner thereto about the liner periphery. An interior extent of the liner is thereby permitted movement relative to the closure member, i.e., is not secured to the closure member. At the point of container initial closure, the liner interior extent is withdrawn under vacuum pressure from its theretofore normal self-biased disposition adjacent the closure member to within the upper neck of the container and is deformed to the extent that initial container pressurization occasions. Upon loss of such initial vacuum pressure, the liner interior extent moves into its normal self-biased disposition adjacent the closure member. Discernment of the disposition of the liner interior extent relative to the closure member is thus indicative of whether the initial vacuum pressure is being maintained or has been lost.

Abstract: A container closure includes a closure member having a top panel and a liner retained rotatively in the closure member, the liner having an upper surface in facing relation to the top panel and a lower surface opposite such first liner surface. The liner has configuration in its upper surface for limiting engagement between same and the top panel to a fraction of interfacing surfaces thereof. The liner has a member depending from its lower surface for sealing engagement with a container.

Abstract: A plastic closure system for containers or bottles containing liquids under pressure, such as carbonated soft drinks. A liner incorporating a high gas barrier material such as "Eval" in a relatively thin layer is positioned over the end of the container neck. The liner is mechanically designed to have increased sealing forces applied thereto due to the internal pressure acting against the liner. In one embodiment, an overcap mechanically biases the liner over the edge of the container finish with internal gas pressure acting in the opposite direction, thus increasing the sealing force. The other embodiments incorporate a seal that has an annular, enlarged edge that is trapped between the finish and cap with pressure increasing the sealing force.

Abstract: A plastic linerless closure for sealing a container includes an integrated sealing mechanism forming at least a part of the top of the closure. The sealing mechanism includes a primary sealing region including a primary sealing flange adapted to engage the top of the container neck during application of the closure, an inner sealing region having an outwardly facing sealing surface which is situated contiguous with the inner surface of the container neck during application of the closure to the container neck and a central non-planar, e.g. concave, region. The inner sealing region is connected in an integrated manner to the primary sealing region and the central region, and the primary sealing flange is connected to the closure top by a hinge region.

Abstract: This disclosure relates to a closure formed of plastics material for use in conjunction with a container also formed of a plastics material. The closure is particularly adapted for use with containers in the form of bottles which are intended to have a product packaged therein under pressurized conditions. The closure cooperates with a lip of the bottle so as to radially inwardly deform the lip with the exterior surface of the lip forming a seal with the closure. The portion of the closure engaging the lip is drawn radially inwardly under pressure by the axial deformation of an end panel of the closure.

Abstract: A reusable tamper-proof container comprising a bottle, screw cap and closure with pull tab. The closure is inserted into the cap with the pull tab positioned into a recessed area in the cap. After the cap is applied to the bottle, the closure is sealed to the lip of the bottle under heat or pressure. When the cap is removed the closure remains adhered to the lip of the bottle and the pull tab is positioned in a recessed area in the neck of the bottle until the closure is peeled off. A childproof feature is added by placing a bar on the bottle which mates with a broken area of the cap's threads thereby preventing movement of the cap in relation to the bottle.

Abstract: Aspirator apparatus including a jar and a bung for closing the mouth of the jar, the bung comprising a domed thermoplastic top provided with a peripheral skirt within the jar mouth and having an annular slot housing an O-ring providing a primary seal with the jar, the thermoplastic material of the bung being resilient to permit depression of the domed top with reduced pressure in the jar with resulting expansion of the skirt to provide a secondary seal between the inner end of the skirt and the jar.

Abstract: A plastic cap for glass or plastic carbonated beverage bottles is shaped so that in use pressure is exerted around the edges of a gasket to give enhanced sealing. A single cap can fit the different necks of standard glass and plastic bottles. Its heat-shrinkable skirt has longer portions between connectors.

Abstract: Imrpoved plastic bottle cap having a primary annular sealing flange depending from the top wall of the cap for engagement with the top wall surface of the bottle neck of the bottle. The flange is flexible and wide enough to cover a major portion of the top wall surface so as to thereby accommodate surface irregularities. The cap also has a secondary annular sealing flange extending radially downwardly from the top wall of the cap for engagement with the outer side wall of the bottle neck.

Abstract: A closure and sealing device for closing and sealing an open-mouthed vessel having a vessel neck and further having an orifice defined by a vessel neck lip protruding axially and radially from said orifice. A bottle cap in accordance with the preferred embodiment is designed to prevent the transfer of liquid or gas between the interior of the bottle and the atmosphere and includes two elongated, tapered sealing members disposed around the interior perimeter of the cap with the sealing members angularly disposed such that they diverge from each other. The tapered ends of the elongated sealing members are adapted to make firm contact against the top and side of the lip. Seal augmenting means consisting of a relatively massive protruding region disposed around the interior perimeter of the cap below the sealing members are adapted to urge the sealing members into sealing contact with the lip and acts as a third sealing member.

Abstract: A package comprising a container and a molded plastic closure. The container neck has external threads formed thereon and an external frustoconical sealing surface formed above said threads and extending upwardly and radially inwardly. The closure comprises a panel and an integral depending annular skirt, the skirt having integral internal threads formed thereon complementary to the threads on the neck of the container. An integral annular side sealing rib extends radially inwardly from the inner surface of the skirt and engages the external frustoconical sealing surface of the container in an interference fit such that when the closure is threaded on the container, the rib is compressed into sealing relation with the external frustoconical sealing surface. The panel portion of the closure includes a portion adapted to engage the end of the neck of the container to form a top seal. The closure includes a flexible annular wall integrally connecting the periphery of the panel and the sealing rib.

Abstract: The invention comprises a threaded plastic closure for a container for pressured fluids, such as a carbonated beverage bottle. The panel portion of the closure abuts the top of the bottle neck or finish to form a top seal, and the wall portion has an internal annular sealing rib for creating a seal on an outside cylindrical portion of the bottle finish. The connecting material between the side seal rib and the top seal of the closure is deformed outwardly, away from the finish and is of reduced wall thickness to provide a flexible connection between the top seal and the side sealing rib.

Abstract: A readily penetrable vacuum indicator closure for sealing an open end of an air evacuated blood collection tube. The closure comprises a flexible tubular body with an open first end and a closed second end formed by a penetrable, flexible end wall, with the end wall having an inner surface and an outer surface. When pressure on the inner and outer surfaces is substantially equal, the outer surface is convexly curved and the inner surface is concavely curved. This end wall is sufficiently flexible to deflect under the influence of a pressure differential on the end wall, such as may be perceived when the closure seals an evacuated blood collection tube. The outer surface of the flexible end wall is readily visible, thus serving as an indicator of relative pressures on opposite sides thereof. A flange is annularly disposed about the periphery of the tubular body adjacent to the second end.

Abstract: The disclosure describes a seal bung for the closure of a bottle, comprising a central body, a part for sealing hold against the bottle glass finish internal wall, and an annular flange with bell-shaped edge, suitable for being held in an internal groove of the metal closure and hugging the rim of said glass finish. The seal bung comprises a central hollow body, an inward-looking closed bottom an annular flange extending from the top of the central body circumferential wall, said part being composed by a lip extending from the flange towards the inside of the bottle and separated from said wall so that it forms an annular hollow space communicating with the inside of the bottle.

Abstract: The present invention provides a closure comprising a top, a depending skirt, and a flange depending from the top and spaced from the skirt and which is adapted to form a seal with the outside side wall of the neck of a container.

Abstract: A housing is threaded to the container and includes a valve stem having a flexible valve disc member. In the housing are upper and lower adjacent valve seats which mate with the disc member to form closed valves therewith. When in contact with the upper seat the valve can be opened and closed by the pressure differential between the container and the ambient. When manually placed in contact with the lower seat the disc member snaps in place by flexing over the upper seat into a locked closed valve state with the lower seat and does not open in response to pressure differentials between the container and the ambient.

Abstract: The present invention relates to a closure for a container the contents of which are to be pressurized characterized by having a crown and a depending skirt, retaining means provided in or on said skirt adapted to co-operate with a neck of the container to which the closure is to be applied, a flexible annular sealing ring extending from an internal surface of the closure adapted to engage in sealing relationship with a container neck and a support ring depending from the crown of the closure and disposed substantially concentrically within the sealing ring and arranged to limit the flexing of the sealing ring relative to the axis of the closure whereby the pressure of the contents of the container permeates between the support of the sealing rings to urge the ring into sealing engagement with the neck of the container to which the closure is applied the skirt has a bead at the level of the sealing ring extremity to center the closure on the neck as the sealing ring and neck are brought into sealing engagemen

Abstract: The neck of a bottle is closed and sealed by a one-piece cap having a cylindrical portion which surrounds the neck, a deformable end wall which extends across the open end of the neck, and a flexible hose which is integral with the end wall. The outer side of the end wall has a diametrically extending projection consisting of two discrete sections having flat elongated outer surfaces which are parallel to each other when the pressure in the bottle equals the pressure of the surrounding atmosphere and which are inclined with respect to each other when the pressure inthe interior of the bottle is reduced below atmospheric pressure. The person observing the surfaces of the two sections can ascertain the presence and absence as well as the extent of pressure differential between the interior and exterior of the bottle.

Abstract: A linerless plastic closure is disclosed which is adapted to seal containers for pressurized contents such as carbonated beverages and which utilizes a plug configuration that is designed to expand under pressure. This is accomplished by making the plug in the form of a disc spring washer with tubular supports joining it to the top of the closure. Pressure against the disc spring washer increases the pressure of the seal against the interior surface of the bottle mouth to provide a reliable seal. The closure may have a slot through the threads on the closure to permit rapid escape of gases from the container during removal of the closure from the container. In this way, dangerous blow-off of the closure from a container is substantially eliminated.

Abstract: A container providing for the separate storage of two materials and the automatic admixing of the materials upon opening of the container. A main container holds a quantity of a first material, such as carbonated water, and a separate compartment holds a small quantity of a second material, such as dipeptide flavoring. In a first embodiment of the invention, a compartmented closure of the twist-on, twist-off type is mounted on the neck of a bottle-shaped container. The closure includes a compartment extending into the container neck, having a hinged bottom closure with a lip which protrudes radially outwardly below the bottle neck. As the closure is unscrewed from the bottle, the lip engages the interior of the bottle neck, causing the hinged bottom to open and thereby release the second material into the main container. In a second embodiment of the invention, a bottle has a twist-on, twist-off type closure which has a compartment for the second material therein.

Abstract: A bottle seal particularly adapted for ink bottles used in automatic ink feed systems wherein the bottle seal is to be pierced by an ink withdrawal needle, the seal having a stopper which has a portion extending into the bottle neck terminating in a lip seal. The stopper portion has an outer diameter groove adjacent the lip seal with at least one air channel communicating from the groove to the exterior to allow aeration of the bottle.

Abstract: A plastic cap for vacuum sealing glass containers such as bottles or jars is disclosed. The cap includes a top wall and a depending annular side wall which extends over and is adapted to be threadedly secured to the neck of a container. The depending side wall has at its lower edge a lead-in chamfer and suitable threads adapted to engage corresponding threads formed on the exterior of the container to which it is to be secured. In a preferred form, serrations are provided on the exterior surface of the cap for gripping purposes, and a reinforcement shoulder is located on the outer perimeter of the side wall adjacent the lower edge thereof to prevent excessive cap expansion upon application to a container. Vacuum sealing is attained by means of two annular flanges depending from and integrally formed with the top wall of the cap.

Abstract: A semi-rigid, deflectable reusable lid in the shape of a disk and formed of a non-porous material is adapted to hermetically seal the open mouth of a container. The lid is positioned over the mouth of the container to be sealed and is retained in position by a threaded band. The inner lid surface adjacent the perimeter of the lid is elastomeric or pliable and is adapted to be depressed by the rim of the container during the cooling interval of the usual food processing cycle to provide a seal between the inner surface of the lid and the rim of the container. When the container is sealed, the central portion of the lid is drawn partially inwardly into the open mouth by the reduced pressure within the container. The lid may be formed of one or more types of suitable material to achieve the deflectable and sealing characteristics desired.

Abstract: A pressure-type containment device with an improved lid sealing feature is disclosed. A lid disk seats on a shoulder along the interior wall of a container mouth and is held in place by a fastening ring adapted to fit into the container mouth. A resilient gasket, such as an O-ring, is wedged between the fastening ring and the lid disk along the interior wall of the mouth. The margin of the fastening ring confronting the gasket is tapered to urge the gasket against the interior wall. A pressure increase within the container expanding the lid disk causes compression of the gasket, enhancing the seal.

Abstract: A releasable, high-pressure seal is formed between axially aligned conduits each fitted with an end flange. One of the end flanges is relatively rigid. The other end flange is relatively resilient and slightly frustroconically shaped. The periphery of the resilient flange is connected to its associated conduit. A seal ring is disposed between the two flanges in proximity of the opening through the flanges. Fluid pressure applied to the inside of the resilient flange biases that flange towards the rigid flange because the portion of the former radially outward of the seal ring is subjected to ambient pressure only. In this manner the sealing force applied against the seal ring is increased proportionally to the fluid pressure interiorly of the conduits. A pair of opposing, inner conduits are rigidly secured to the respective outer conduits and they protrude past the outer conduits.

Abstract: The disclosure is of a novel closure for air evacuated tubular containers and comprises a tubular body having flexible, elastic sidewalls, an open end, a closed end formed by a cannula-pierceable, flexible, elastic end wall having a concavo-convex configuration in cross-section and a flange disposed radially about the periphery of the open end. The novel closure structure takes advantage of the vacuum force in the container to maintain a gas-proof, hermetic seal, reduces the thickness required of the closure to maintain the hermetic seal and is easier to assemble in an air evacuated container. The disclosure is also of a novel method of assembling the closure of the invention in an air evacuated tubular container.

Abstract: A container having a neck portion provided with an inwardly turned downwardly extending flange element is engaged with a cap device having a depending skirt portion which engages the flange element of the neck of the container so that when the container is filled with an aerated beverage or the like the pressure thereof is exerted against the cap device so as to enhance the sealing engagement of the cap device in the neck of the bottle.

Abstract: In champagne and other types of effervescent wines which generate gases when bottled and enclosed by a cork which is used as a stopper, the cork is usually wired to the mouth of the bottle to prevent it from being blown therefrom should the pressure build up sufficiently therewithin. When the wire is removed and the cork moved from side to side, it will be released from the neck of the bottle and shot therefrom with a substantial force. A towel is usually wound over the cork and neck of the bottle before being released to prevent someone from being injured when the cork is blown from the bottle neck. The wire was eliminated when a hollow plastic stopper was developed as the pressure within the stopper was applied in all directions forcing the side against the inner surface of the bottle neck an amount corresponding to the increase in pressure.

Abstract: An improved closure for fragile containers substantially filled with a gassy liquid, said closure comprising a combination of a cap for the container and a volumetric member partially within said cap and partially extending into the interior of the container. The volumetric member displaces and contains free gas generated by the gassy liquid thereby substantially reducing or completely eliminating the explosive potential of the container. The volumetric member is characterized by means that facilitate drainage of the gassy liquid should the liquid enter the member such as by expansion caused by elevated temperatures or inversion or shaking of the container.

Abstract: A closure for a container characterized by a crown and a depending skirt, retaining means provided on the skirt adapted to cooperate with corresponding means on a container to retain the closure about a neck of the container defining a dispensing opening thereof, a flexible annular sealing ring extending from an internal surface of the closure adapted to engage in sealing relationship with the container neck, a sealing ring support adapted to assist said ring into sealing engagement with the container and means for permitting pressure of the container contents to act upon the sealing ring to urge the ring into sealing engagement with the neck of the container to which the closure is applied.

Abstract: A closure lid for a home canning jar includes a cap member threadably engaging the neck of a canning jar. A flexible dome shaped body extends upwardly through the cap member. A mechanism is provided for forming an airtight seal between the cap and the body. A mechanism is provided for forming an airtight seal between the body and an upper edge of the neck of the jar.

Abstract: This invention relates to a canning jar sealer lid provided with a mechanically activated valve and a means for operating the valve manually.In one embodiment, a sectional sealer lid designed for use with screw bands and other holders is constructed in two parts containing apertures and gaskets so arranged that when they are fitted together and held to a canning jar lip by a holder, they unite to form a sealer lid and a relief valve. In use on a jar, the valve formed by the sections of this lid working conjointly will activate according to internal jar pressure applied vacuum sealing the jar or releasing said pressure, and there is a means supplied to manually open the valve externally.A modified embodiment is a single thickness canning jar sealer lid designed for use with screw bands and other holders which has a pressure relief means installed directly through the lid section.

Abstract: A ventible closure for a container adapted to hold sterile fluids wherein the container has a neck with an open end surrounded by a beaded rim. The closure includes a rigid plug which fits down into the container neck and an elastic cap fitting over the open end of the neck in engagement with the rigid plug and the beaded rim to seal the container. For venting, internal pressure within the container causes outward flexing of the elastic cap to break the seal and establish flow paths for the fluid to escape from the container.

Abstract: A bottle closure of flexible thermoset synthetic material has a corrugated annular insert and an outer wall depending from its base. A thinned portion in the base is of a thickness and geometry adapted to burst at a predetermined pressure within the bottle. An annular shoulder on a severable skirt extends laterally beyond the outer wall which fits against the end of a plunger for urging an internal annular bevel groove in the skirt over an external annular bead near the mouth of the bottle.