Abstract: A closure for a container includes a closed top, a peripheral skirt and an integral engagement portion which extends from the closure top having an outer sidewall which is spaced radially inwardly from the inner sidewall of the skirt a distance sufficient such that the container neck is receivable in the space therebetween. A mechanism is provided by which the engagement portion is expanded radially outwardly either during or after the application of the closure to the container to urge the sidewall of the engagement portion tightly into engagement with the inner sidewall of the container neck to provide a friction locking and/or hermetic sealing of the closure to the container. In another embodiment, locking means are provided on the inner sidewall of the closure skirt which allows the closure to be twisted onto the container but which prevents the closure from being twisted in the opposite direction thereby locking the closure onto the container.

Abstract: A one-piece tightly fitting, molded plastic lid intended to be used in association with a container having a laterally-protruding lip extending about the perimeter of its mouth. In each embodiment of the invention the plastic lid is provided with a surrounding depending sidewall having a relatively thin upper web segment which is adapted to deform heightwise to conform to the shape of the protruding container lip as the lid is fitted onto the container. The lower region of the lid sidewall has a resilient skirt which is thicker than the web segment and thus has a greater elastic memory. The sidewall skirt stretches when forced over the protruding lip and then the skirt retracts radially inwardly closely adjacent to the outside wall of the container immediately below the lip to stretch the deformable web segment tightly over the lip to seal the mouth of the container.

Abstract: A neck finish for plastic containers which are closed by plastic caps of the general type having an integral, thin, flexible inward-directed top flange at the lip which initially slants upwardly-inwardly at an angle of about 20.degree.. When the cap is applied, this top flange fits under the top disc of the cap and is depressed to an angle of about 10.degree.. It nests between the outer skirt and the inner skirt. The neck seals against the outer skirt in several locations (as in prior constructions), but the inner edge of the flange seals tightly in the corner where the bottom of the top disc and the outside of the inner skirt intersect. The top flange also augments the sealing effect of the lower edge of the inner skirt and the inside of the neck. Below the cap skirt the container neck has a shoulder to impede any attempt to pry the cap off the container.

Abstract: A carbonated beverage package comprising a container having an opening with a peripheral lip defining a free edge, and a downwardly and outwardly inclined sealing surface spaced from the free edge of the peripheral lip. A closure of plastic material, such that it will flex in thin cross section, is provided with an annular wall, a radial wall engaging the free edge of the peripheral lip of the container, and a transverse wall defining a convex surface facing inwardly of the container. The closure has a downwardly and outwardly inclined integral annular sealing surface at the juncture of the axial wall and transverse wall which engages the sealing surface of said container and places the axial wall under tension.

Abstract: A container having a threaded neck is provided with a removal resistant cap which can be applied to the container neck by rotational thrust. The cap has a depending skirt having an internally threaded lower section with the threads terminating in a bead intermediate the ends of the skirt. The neck has an upper threaded section with the threads terminating in a bead spaced below the top of the neck. When the threads of the cap are engaged with the threads of the neck and the cap is rotated relative to the neck, the skirt will circumferentially expand so that the skirt bead passes over the neck bead. At that point, the threads will no longer engage and the interlocked beads will inhibit removal of the cap. Means are provided to enhance removability of the cap from the neck by tearing away a portion of the skirt.

Abstract: A stopper assembly for pharmaceutical containers or the like having a pull ring operable between a position flush with the top face of the stopper and an erect position engageable by the finger of the user for removing the stopper from the container. In acccordance with the preferred embodiment, the stopper and pull ring member are separate elements. The stopper which is preferably made of rubber has an annular groove with a locking shoulder to receive an insert ring of the pull ring member of complemetary shape to retain the two in a locked position. A pull ring is connected to a flange of the insert ring by a flexible hinge. The pull ring normally lies in the plane of the insert ring flange flush with the top face of the stopper and may be easily raised to an erect position to receive a finger of the user to enable removal of the stopper from a container by a pulling action.

Abstract: A reusable childproof container closure is disclosed for closing the nozzle of a plastic container wherein the container terminates upwardly in a nozzle including a peripheral groove. A plastic closure includes an inserting member having a cooperating, peripheral lip formed therein for removable engagement in the peripheral groove. The closure also includes a peripheral skirt formed with depending sidewalls which overfit the nozzle and which provide a surface to be engaged by a tool such as a screwdriver for closure removal purposes.

Abstract: A snap-on closure for use with a bottle having a neck and a mouth defining an opening in communication with the interior of the bottle, includes a circular top wall which contacts the uppermost surface portion of the bottle mouth. A first annular sealing wall, extending centrally downwardly from the top wall, engages and seals an inner surface portion of the bottle mouth. A second annular sealing wall also extending centrally downwardly from the top wall is spaced radially outwardly from the first annular sealing wall and engages and seals an outer surface portion of the bottle mouth. An outer wall, connected to the periphery of the top wall by a thin web membrane to permit easy separation from the top wall, extends downwardly from the periphery of the top wall a greater length than the second annular sealing wall. The outer wall has a flange extending radially outwardly from and along a major portion of its lower edge.

Abstract: The closing of packing containers, e.g. bottles for beer or refreshing beverages, is achieved by means of metal or plastic caps. A cap which is easy to handle and which is reclosable is disclosed. A substantially conventional cap body of flexible plastic material is provided with locking devices in the form of integrated lever arms, which can be maneuvered by means of a ring surrounding the cap body. The locking devices in closed position rest against a bulge located around the neck of the bottle and can be maneuvered with the help of the ring to an open position in which they permit the unhindered removal or replacement of the cap.

Abstract: An improved retainer for an expansion joint system and a sealing cap for the anchor bolt channel thereof. The retainer channel and the cap have complementary mating profiles in the form of ledges with inclined edges and inwardly offset grooves having sloped bottom surfaces on the retainer channel walls, the cap having laterally projecting upper edge portions defining ledge receiving grooves and sloped bottom edge surfaces whereby entry of the cap into the retainer channel is facilitated by coaction between the sloped bottom surfaces of the cap and the inclined edges of the retainer ledges. The retainer ledges mate with the cap grooves to lock the cap in the retainer. The sloped bottom surfaces of the cap are supported by the sloped bottom surfaces of the retainer grooves and the laterally projecting upper edge portions of the cap are supported by the upper surfaces of the retainer ledges, the surfaces being in sealing engagement.

Abstract: A tamperproof closure for a bottle or other container having a neck portion with an external rib comprises a cap body of flexible, resilient material. This cap body includes an annular rim and a pair of skirts depending respectively from the inboard and outboard edges of this rim. The outboard skirt is provided with an internal rib that is adapted for lockable coaction with the bottle neck rib; and a circular top panel is connected to the inboard skirt to cooperate with the inboard skirt in defining a recess for receiving a cap-mounting tool. In accordance with the invention, the rim and its connection with the skirts cooperate to define a resilient hinge section.

Abstract: A container with a lid has a base, a side wall and an open top which the lid closes. It is made by separately moulding in plastics the base and the ring defining the open top, with the side wall being moulded integrally with one or both of these parts, and then joining the parts together by bonding or welding. The top ring is moulded with a flange which extends inwardly and downwardly and receives a mating closure flange on the lid to give a resilient sealing fit.The lid may be a snap-on fit having a skirt with an inward bead or groove for engaging a complementary groove or bead on the container. The skirt may be accommodated in a rebate at the top of the container and may be levered away from the lower shoulder of the rebate to remove the lid. Damage to the seals between the lid and the container due to excess force exerted in machine fitting of the lids is avoided by abutments located in the rebate for preventing excess movement of the skirt of the lid.

Abstract: A luer cap for use on ports of medical devices such as cardiotomy reservoirs and blood sets. The cap comprises an outer wall (10) having a generally circular cross-sectional shape. An inner wall (12) and end wall (20) define an internal port receiving cavity (13). The inner wall (12) is threaded to mate with threads or a flange on a female luer port. The mating surfaces of the luer cap and the luer port can be sterilized through a hollow tubular portion (18), end wall (20), and outer wall (10) of the luer cap.

Abstract: The present invention relates to a bottle closure comprising a push-on closure cap, on the inside of the end portion of which there is secured a rubber-elastic member 2 which serves to bear against the edge 4c of the mouth of a bottle, and also comprising resilient blade portions 1d which are disposed around the member 2 and which have detent portions 1e formed thereon, to engage under an annular projection 4b on the neck of the bottle. The invention provides that the rubber-elastic sealing member 2 is in the form of a peg-like member which, in the closed condition, bears sealingly with its free end surface 2a against the end face of the edge 4c of the mouth of the bottle, the length of the peg-like member corresponding at least to half the distance between the end portion 1b of the cap and the detent surfaces 1n. The blade portions 1d are also surrounded by a resilient ring 3.

Abstract: The invention provides an improved plastic snap cap with a tamper proof band for sealing wide mouthed plastic containers that have an outwardly protruding, continuous, circumferential bead near the top of the container rim. The cap panel has a depending sealing plug for forming a seal on the inside surface of the container. The inside of the closure skirt has a dual function groove formed to provide a frangible circumferential line and to receive the protruding bead when the cap is snapped into position on the container. The portion of the skirt below the groove serves as a tamper proof tear strip, and normally prevents removal of the closure. The groove on the inside of the closure skirt does not extend around the entire inner circumference of the skirt, but leaves a small section of the skirt with no groove or recess to receive the protruding bead. Therefore, when the cap is in place on the container, the protruding bead causes this section of the skirt to bulge slightly outward.

Abstract: A plastic closure having inner pressure sealing skirt and outer finish engaging skirt has a plurality of fingers evenly spaced around the inner side of the outer skirt. The corresponding finish has a like plurality of indentations evenly spaced around its circumference for engagement by the fingers when the cap is applied. The indentations may be in the form of recesses spaced from the bottle mouth, having a horizontal lip at the top edge, and having a side wall smoothly merging with the outer surface of the finish at the side of the recess. Alternatively, the recess may be a bayonet groove spiraling downwardly on the finish and then bending into a horizontal or upwardly spiraling groove for locking the fingers in place against pressure in the bottle. Another embodiment would employ a groove spiraling downwardly on the finish at a first depth, and then terminating in a groove portion of a second greater depth.

Abstract: A tamper proof container and closure assembly comprises a collar connected to the container by a number of straps moulded to and between the container and collar, so that when the collar is snapped into engagement with the container, the collar can be removed only by breaking one or more of the straps, the collar being sealed to form the closure by the application to the collar of a plug which cannot be removed from the collar without distorting the material of the plug and/or the collar.

Abstract: Cap for sealing containers comprising a hood member, a resilient sealing member adapted for press fit insertion in the container neck, an axial rod engaging internally with said sealing member and an annular portion fixedly attached to said hood member and adapted for retaining the sealing member.

Abstract: A snap on bottle cap for a container having a neck configuration including an annular shoulder over which the bottle cap is engaged so as to be self-retaining thereon. The bottle cap is formed of resilient material permitting distortion of the cap when it is applied to the bottle. A ring is positioned around and fastened to an annular flange of the cap by a plurality of frangible elements and it is attached to a portion thereof separated from the remainder by spaced cutaway areas. The ring thus may be used as a pull ring to free the portion of the annular flange as necessary in removing the cap by permitting the remainder of the cap to expand circumferentially so as to become disengaged from the annular shoulder on the neck portion of the bottle. The separation of the ring provides a visual indication of tampering.

Abstract: A tamper-proof container closure which has a tear strip concentric with the dependent side walls of the cap. The tear strip which is spaced apart from the cap side walls is connected to the side walls by frangible radial connections. The tear strip is adapted to seat on a shoulder of the container on which the cap is fitted and the closure can only be removed from the container by first removing the tear strip.

Abstract: A cap for a bottle has a top portion for covering the open mouth of the bottle and two spaced rings extending therefrom to define a groove to receive an annular lip portion of the bottle. One of the rings can be angled toward the other and be flexible such that the lip of the bottle is fully grasped and maintained in the groove. The radially outer ring of the cap is provided with a plurality of circumferentially spaced weakened areas so that when the cap is removed from the bottle the outer ring will tear at at least one of the weakened areas to identify a cap which has become unsealed from its bottle.

Abstract: A closure structure for a vial or container, preferably of the two-compartment type, wherein lyophilized medication is contained in one compartment and a solvent is contained in the other compartment with a displaceable, moisture-proof plug disposed between the two compartments. The closure structure is comprised of a stopper which is partially inserted into the neck of a vial and is covered by a cap member having a fastening portion for securing the cap member to the open end of the vial neck and a sleeve portion of reduced diameter which snugly surrounds the protruding portion of the stopper and is disconnectible from the fastening portion in order to move with the protruding portion of the stopper into the neck of the bottle under manually applied pressure. A dust shield is secured to the free end of the sleeve portion and is preferably removed after which the needle of a syringe can be inserted through the stopper to communicate with the interior of the vial.

Abstract: A blow molded or injection molded plastic container has a neck formed with a substantially horizontal flat top, an internal substantially vertical first sealing surface, a groove, a very smooth second sealing surface of less diameter than the first sealing surface and a lower groove and then a vertical stretch which merges into a breast which widens out to the full size of the container, an external first vertical surface, a horizontal inwardly extending soulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface at about the level of the vertical stretch. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has upper and lower internal beads (which seat under the shoulder and external bead of the neck) interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck.

Abstract: A plastic container neck has an inside substantially vertical sealing surface, a top groove, a very smooth second sealing surface of less diameter than the first sealing surface, a lower groove and a vertical stretch. The outside of the neck has a vertical surface, a horizontal, inwardly-extending shoulder, an indented second vertical surface of lesser diameter than the first vertical surface and an external bead, and a third vertical surface. The container has a substantially uniform wall thickness. The second sealing surface has an "injection finish" obtained by use of a blow pin in the mold. The cap has lower internal beads interrupted in a plurality of gaps, permitting stretching of the cap to seat on the neck. Thickenings on the interior of the cap outer skirt paralleling the spiral groove of the skirt from the bottom edge of the skirt to the horizontal groove to facilitate tearing the skirt.

Abstract: An injection site is provided which is molded inside out with inwardly extending rings. The rings have a smaller internal diameter than the external diameter of the tubular member to which the injection site is to be connected. The injection site has a central portion for receiving a needle therethrough, and a first, cylindrical portion which is extended into the tubular member. After such insertion, the portion with the attached rings is folded back onto the tubular member. The rings become positioned on the outside of the assembly and are in the compressed state squeezing tightly against the tubular member.

Abstract: A stopper is provided for a test tube, and the like, which can be quickly inserted into the mouth of the test tube into sealing engagement therewith by a simple pushing operation, and which can be just as quickly removed by a simple pulling operation. The stopper has a hat-like configuration. It is formed of rubber, or equivalent resilient material. The stopper is placed over the mouth of the test tube and is pushed inwardly until it assumes an inside-out configuration in which the stopper is firmly sealed to the mouth of the test tube. To remove the stopper, it is merely necessary to pull it back to its original configuration.

Abstract: The invention comprehends a capsule for stoppering the neck of a bottle, characterized in that its skirt has a cross section which is cylindrical practically over the whole of its vertical height, has a slight thickness, substantially uniform over the whole of its height, and includes around its inner wall, a retaining rib of triangular section intended to be anchored and fit beneath the collar on the neck of the bottle.

Abstract: A container closure, comprises a container having an open mouth, with a rim formation around the mouth with an exterior bead formation and an interior wall. The container is closed by a cap which has a flat top portion overlying the mouth and it has an annular skirt portion extending downwardly from the periphery of the flat top portion, which is engaged over the bead formation and terminates at its lower internal end in a bead engaged against the interior surface of the container below the bead formation. The cap also has a substantially cylindrical central part with an annular portion bearing against the interior wall of the receptacle adjacent the rim which has a lower free end with a reinforcing portion.

Abstract: A closure structure for a vial or container, preferably of the two-compartment type, wherein lyophilized medication is contained in one compartment and a solvent is contained in the other compartment with a displaceable, moistureproof plug disposed between the two compartments. The closure structure is comprised of a stopper which is partially inserted into the neck of a vial and is covered by a cap member having a fastening portion for securing the cap member to the open end of the vial neck and a sleeve portion of reduced diameter which snugly surrounds the protruding portion of the stopper and is disconnectible from the fastening portion in order to move with the protruding portion of the stopper into the neck of the bottle under manually applied pressure. A dust shield is secured to the free end of the sleeve portion and is preferably removed after which the needle of a syringe can be inserted through the stopper to communicate with the interior of the vial.

Abstract: A self-retaining stopper for bottle containing pressurized contents such as champagne is disclosed. The stopper is especially adapted to cooperate with a bottle finish having a plurality of raised helical ribs of substantially uniform width and uniform maximum height spaced regularly around the circumference of the finish. The stopper comprises a shank for sealable insertion into the neck of such a bottle and a cup-shaped crown defining a resilient skirt overlying the finish. The skirt includes a plurality of inwardly projecting nodular protrusions for engaging the lower side of the helical ribs upon the inwardly directed urging of the resilient skirt. The inner wall of the skirt further includes a plurality of webs disposed to encounter the upper rim of the finish. The nodular protrusions and the webs are spaced apart a predetermined distance to secure the stopper in an axially locked position against the high pressures encountered within the bottle without the need for safety wiring or the like.

Abstract: A protector cap for establishing a sterile seal over a port having a puncturable section in a container wall and a cylindrical neck portion projecting from the periphery of the wall section. The cap comprises a molded housing having a ring-shaped recess for sealingly engaging the neck member and a chamber formed at least in part within a compressible handle portion. The handle portion is compressed prior to inserting the cap on the neck portion of the port and is subsequently released to establish a partial vacuum in the chamber. The partial vacuum assists in retaining the protector cap in position and prevents trapped air from forcing the cap off during subsequent heat-sterilization of the container.

Abstract: A method for molding plastic covers for containers wherein the molding apparatus includes a stationary die section, including a fixed die member having a molding surface shaped to form a portion for the mold corresponding to the outer surface of the side of the cover, a movable die section including a plurality of movable die members, at least one of the movable die members being slidingly engaged within said stationary die member, a means for moving the plurality of movable die members in an axial direction between the closed and open positions of the molding apparatus, and a means for controlling the disengagement of the individual die members from the molded plastic cover whereby the fixed die member is first disengaged prior to the plurality of movable die members being sequentially disengaged from the cover.

Abstract: A lid has an inverted U-shaped peripheral rim, which rim snaps over the upper edge of a container sidewall. There are three separate sealing zones between the lid and the container. First, the cover portion interior of the snap on rim has a plug fit interference relationship with the interior of the container. Second, the outer leg of the snap on rim has an interference relationship with an outwardly extending sidewall ridge near the upper edge of the container. Third, the outer leg of the snap on rim also has an inwardly facing ridge which snaps over the sidewall ridge and has an interference relationship with the outer surface of the container sidewall. A tear-off strip constitutes the lower portion of the outer leg of the snap on ridge and tears off below the inwardly facing ridge. The lower edge of this tear off strip abuts against a ledge which extends outward from the container sidewall thereby inhibiting tampering with the strip until initial opening is intended.

Abstract: A plastic material closure member for a container, said closure member having a gripping portion and a substantially cylindrical sealing portion adjacent thereto, in which the sealing portion comprises a sealing wall and a centering member adjacent thereto, and in which the walls of the gripping portion, the centering member and the sealing wall are laterally deformable.

Abstract: There is provided an improvement in a molded plastic container lid for sealing an open top container including a peripheral wall having an inner surface, a top edge and provided with an outwardly projecting, peripheral sealing bead with a downwardly facing portion. This type of lid includes a circumferentially extending bead engaging means including first means for engaging the inner surface of the peripheral wall and a second means for engaging the bead. The second means includes an inwardly extending ledge means having an upwardly facing surface for engaging the downwardly facing portion of the bead. This improvement comprises providing the upwardly facing surface of the inwardly extending ledge means as a horizontal surface.

Abstract: A tamper-proof bottle stopper intended to be used for closing wine bottles. The stopper means is of a composite nature and includes a stopper body having an integral upper flange portion which is situated in the closed position above the annular end surface of the neck of a bottle and abuts against the latter when the stopper body proper is pressed into the neck. The upper portion of the stopper body is corrugated or fluted on the radially outer surface thereof. The stopper body defines a cavity open at the upper end and closed at the lower end into which a gas-tight stopper insert is placed. The composite stopper means further includes a fluted cap that engages and coacts with the fluted portion of the stopper body so as to prevent a rotary motion of the cap relative to the stopper body. The cap is provided with a skirt projecting downwardly on the outer surface of the neck of a bottle.

Abstract: An elastically deformable plastic cap for containers such as bottles having necks, such containers containing materials under pressure, such as aerated liquids. The cap consists of two cylinders disposed concentrically one within the other. The outer cylinder has a sealing ring with a sealing edge at its lower end and the inner cylinder is closed at its bottom end with a diaphragm. The cylinders are connected at their upper ends by means of a ring. The bottom surface of the diaphragm and the bottom surface of the sealing ring are disposed in a first common plane; the sealing edges on the inner surface of the sealing ring and the outer surface of the inner cylinder respectively and the upper surface of the diaphragm lying in a second common plane, the second plane being parallel and above the first common plane.

Abstract: Safety closure means comprising a container and a closure cap therefor, in which the container has a neck and a shoulder, which shoulder is formed with a pair of diametrically positioned locking lugs integrally formed therewith. The cap is formed of a thermoplastic material having a top end wall and a depending annular inner wall and a depending outer annular skirt spaced from the inner wall, with the inner wall of the cap having threaded means for engaging the neck of the container to secure the cap to the container in a closed position.

Abstract: A cover for a specially constructed receptacle having a circular entryway, such as a pharmaceutical vial of plastic, satisfies the present day requirement for moisture-proofing containers of moisture-affected medicines by providing an elongate, resilient plastic skirt which extends deeply into the entryway through the open mouth of the receptacle. Mutually confronting, coacting, circular formations internally of the receptacle and intermediate the length of the skirt interengage in sealing, line contact when the cover is secured over the open mouth of the receptacle. One of the circular formations has a sharp edge, the other is a smooth surface against which the sharp edge impinges. Either formation may be carried by either the receptacle or the skirt. For long useful life, the sharp edge is preferably of softer material than the smooth surface, so as not to indent nor otherwise damage the smooth surface. Securement of cover to receptacle may be of child-resistant or of easy-opening type.

Abstract: A plastics container and closure assembly in which the closure has a cap part, a tear away band, an anchor band, a hinge connecting the cap part to the anchor band and a bung to seat within the mouth of the container. The bung is deeper on one side than on the other whereby when viewed from one side the bottom of the bung is formed by an oblique line extending upwardly from the deepest part of the bung to the shallowest part and wherein the shallowest part of the bung is adjacent to a thumb tab by which the cap may be manipulated and the deepest part of the bung is adjacent to the hinge. The anchor band has an auxiliary band retaining projection positioned when in use below the auxiliary bead on the container and a main band-retaining projection when in use below the main band-retaining bead the arrangement being such that when the tear-off strip is removed the cap part remains connected to the anchor band by a hinge and the anchor band is firmly held in position.

Abstract: This invention relates to a closure which serves hermetically to close -- though being easily reopened -- a bottle or similar container, which possesses a neck having a dispensing orifice, a neck frontal face surrounding said orifice and an orifice bead located below the latter and having a constriction on its underside, and which closure comprises a cap serving as the head of the closure, with an upper cap wall ( or roof wall of the cap ) and a cap side wall circumferential about the latter and possessing slot means, extending from its lower rim and transversely to the latter, to permit it to splay ( or spread ) on being mounted on the mouth of the bottle, and with an inner annular bead, projecting inwards from the inner face of the cap side wall and intended, in the closing position, to engage with the underside of the orifice bead of the bottle, a sealing element, provided on the inner face of the upper cap wall and serving, in the closing position, to seal the dispensing orifice of the bottle, a lifting e

Abstract: This invention relates to a closure which serves hermetically to close - though being easily reopened - a bottle or similar container, which possesses a neck having a dispensing orifice, a neck frontal face surrounding said orifice and an orifice bead located below the latter and having a constriction on its underside, and which closure comprises a cap serving as the head of the closure, with an upper cap wall (or roof wall of the cap) and a cap side wall circumferential about the latter and possessing slot means, extending from its lower rim and transversely to the latter, to permit it to splay (or spread) on being mounted on the mouth of the bottle, and with an inner annular head, projecting inwards from the inner face of the cap side wall and intended, in the closing position, to engage with the underside of the orifice head of the bottle, a sealing element, provided on the inner face of the upper cap wall and serving, in the closing position, to seal the dispensing orifice of the bottle, a lifting element

Abstract: A stopper for use with an evacuated blood collecting and separating tube comprising a flange portion, a plug portion depending from the flange portion including a generally frustoconical lateral face and a flat annular bottom face, and a nose portion depending from an inner circumference of the plug bottom face. The nose portion includes a beveled or tapered section having an axial cavity extending through the nose portion into the plug portion. The axial cavity preferably includes a frustoconically shaped lateral face.

Abstract: A flexible plastic safety cap for bottles containing pressurized liquid such as champagne or sparkling burgundy. This cap is designed for bottles having a neck open at the top and with an external downwardly facing shoulder. The cap includes an inner sealing portion which goes into the opening of the neck and an outer locking portion which includes a flexible, resilient tubular section that surrounds the neck. The tubular section includes two or more internal rib portions which engage the neck shoulder to lock the cap to the bottle neck. The tubular section may also include an integral pull tab portion for readily releasing and removing the cap from the bottle.

Abstract: In this two-piece closure for sealing containers, abutment, retaining and locking means are provided on the one hand on a flange of the main or inner cap and on the other hand on the bottom and/or inner surface of the skirt of the outer cap, said means co-acting with each other for securing the main cap flange in said outer cap, without any play, relative movement and flange distortion.

Abstract: A widemouth (e.g. 120 mm) jar preferably of plastic material has a neck having a flexible in-turned flange at its upper end and two vertically spaced, horizontal inward-formed beads with two outward-downward conical surfaces above and below the lower inward-formed beads. The cap has a top disk with a depending short inner skirt having a tapered edge and an elongated peripheral skirt. The peripheral skirt has in consecutive order proceeding downward an upper cylindrical portion, an upper internal bead, a circumferential internal weakening groove, a lower locking bead and a slanted ramp. The in-turned flange of the neck is compressed between the two cap skirts, the upper internal bead seats against the upper conical surface and the locking bead seats in the lower inward-formed bead of the neck. Thus a product and air-tight multi-zone seal is effected; and, further, once seated the cap is tamper-proof in that it must be torn to be removed.