Abstract: A reusable cap for closing carbonated beverage containers or the like, consists of an internally threaded shell having a fitment therein which sealingly engages the neck of the beverage container at the free edge thereof. The shell and the fitment are constructed of different plastic materials and are injection molded in different portions of the same molding cavity. First, the fitment is formed and then, without moving the fitment from the position in which it was formed, the shell is formed, to produce a unitary structure in which substantial portions of the fitment are imbedded in the shell.

Abstract: A screw-cap (1) for closing a container mouth has a sealing lip (5), which is affixed to the cap top (4). The inner side-wall (7) of the sealing lip (5) has a diameter (A) which is greater than the outer diameter (B) of the container outer wall (8). A clamping device, which can be designed as an inner seal (13), creates a contraction of the cap top when the screw-cap is screwed on to the container, by which means the sealing lip (5) is pressed against the container mouth (8). In this manner the sealing lip (5) is only pressed radially against the container mouth during the course of the screwing-on process. In this way over-stretching and damage to the material of the sealing lip can be prevented.

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: A closure for fitment to the threaded neck of a container is disclosed. The closure is especially adapted for use in packaging products such as carbonated beverages. The closure has a circular top wall and an annular skirt downwardly depending therefrom. The skirt carries about its inside surface a closure thread for cooperation with the neck thread of the container. A circular, flexible, resilient liner is positioned against but rotatable with respect to the inside surface of the top wall and has a diameter greater than the outside diameter of the container lip which defines the container mouth. There is provided an annular projection which is located adjacent the inside intersection of the top wall and the skirt. This projection has a configuration whereby it presses the liner on the outside edge of the container lip to form a gas-tight seal when the closure is fitted onto the container.

Abstract: A closure cap for a container with enhanced sealing capability including a sealing member which is uniquely structurally arranged for optimum sealing without the need for excessive torque applications.

Abstract: A screw-type linerless closure molded of resilient plastic is provided with a novel combination of sealing elements for accommodating storage overloads, large container tolerances and variable surface textures, to secure reliable sealing over a wide range of conditions. Operation of the principal sealing ridge is assisted by an adjacent pressure-relief groove, or grooves, and by separate overload-resisting elements. A supplementary sealing flange is also provided to accommodate irregularities of the mating surface of the container.

Abstract: The screwthread in a screw cap for a bottle has at least one gap which interrupts the screwthread, at a position which is spaced at less than 360.degree. from the start of the screwthread whereby, if the screw cap is fitted in an angled position on to the screwthread on the bottle, the screw cap can snap over the first turn of the screwthread on the bottle in order to move into the proper position.

Abstract: A bottle closure for a beverage bottle is disclosed. A threaded bottle neck receives a hollow extractor having threads complementary to those of the bottle neck. The extractor is engaged with the bottle neck. The extractor has a crown portion including an aperture that is coaxial with a bottle opening; it also has an annular protuberance that is coaxial with the bottle opening. A bottle cork may be inserted through the extractor and into the bottle neck to seal the bottle. An upper portion of the cork is grasped by the annular protuberance such that the extractor grips the cork more firmly then the bottle does. Disengaging the extractor from the bottle neck withdraws the cork from within the bottle; engaging the extractor with the bottle neck advances the cork into the bottle to thereby seal it.

Abstract: A stress failure resistant container cap for a threaded neck container in the nature of a carboy, such as large acid carboys, wherein the containers are usually large and heavy and closure caps therefor are also extremely heavy in structure. Carboys, for example, are sufficiently large that users sometimes over-tighten the cap using a wrench or similar tool. This can result in cap failures due to stress cracking due to the high torque applied to the cap. The high torque applied to the cap, and its coaction with the threads of the neck, when high or excessive torques are applied, tend to apply a strain in the corner juncture between the cap top and neck thereof. This can, and frequently has, resulted in cracking of the cap material. The strain is applied by a tendency to apply a bending force to the cap at the juncture corner.

Abstract: A container with lid having a reusable sealing gasket integrally formed therein in which the gasket extends downwardly and outwardly from the lid into contact with the container rim. The gasket is geometrically shaped in the form of the frustrum of a right circular cone. In the present invention, turning of the lid a sufficient amount engages a lid-to-jar stop which mechanically stops further rotation at the point where the gasket has been grossly deformed a predetermined amount sufficient to obtain a high degree of seal. The gasket operates by having its lower edge wipe along and radially expand along the top surface of the container, the lower edge being placed under tension as the radial expansion occurs.

Abstract: A composite closure for a bottle or like container is disclosed which includes a compression molded plastic cap and a plastic sealing liner retained within the cap. Effective retention of the sealing liner in position within the plastic cap is provided by an inwardly extending annular lip disposed between an internal thread formation of the plastic cap and its top wall portion, and a ring of projections extending integrally from the inner surface of the top wall portion of the cap. The sealing liner includes an annular bead portion adjacent to and in engagement with the annular lip and ring of projections so that the liner is effectively retained in position within the plastic cap.

Abstract: A bottle cap composed of a cap body and an inner plug to be fitted inside the cap body. The cap body has an annular groove in the upper part of the inner wall. The inner plug is provided, at the uppermost part of the pot-shaped plug body, with an outwardly extending annular radial flange, which is provided on the lower face thereof with an annular shoulder to constitute an upper portion with a larger diameter and a lower portion with a smaller diameter, wherein said larger diameter portion engages said annular groove of the cap body while said smaller diameter portion has a lower face which engages the uppermost brim of the bottle mouth when the cap is mounted on the bottle. Thus the cap of the present invention can be mounted separately in the order of the inner plug and then the cap body, or mounted together in a pre-assembled state, and is always removed as a unit from the bottle.

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: A threaded thermoplastic closure having a free-floating liner is disclosed. To prevent backoff of the closure from a container, studs are provided on the top wall of the closure which anchor the closure to the liner, thus utilizing the resistance to rotation present between the liner and the container lip.

Abstract: A double-seal, molded plastic screw cap for use with a solid cosmetic product, consisting of a resilient, cup-shaped plastic cap body having internal screw threads, the bottom rim of the body being engageable with an external shoulder of the container to effect a seal therewith. Above the screw threads, the side wall of the body has an inwardly raised, annular sealing bead adapted to slidingly and telescopically engage an outer annular surface of the container neck at the top rim thereof, to effect a second seal. A clearance chamber exists above the sealing bead, into which a portion of the cosmetic product can extend. The clearance chamber is characterized by thin walls, to effect a saving of plastic material. The sealing bead is effective independent of the exact axial positioning of the cap, and the bottom rim seal of the cap requires that the latter be tightly screwed onto the container.

Abstract: A closure system for a container having a neck with a cap support flange extending radially outwardly around the neck. A resilient gasket encircles the neck and overlies the cap support flange, to be compressed by a closure cap which is attached to the neck for sealing. Annular rib means project from the support flange against the gasket to retain the gasket in its sealing position. A method is also described for the manufacturing of such a closure system.

Abstract: A linerless bottle cap having a plurality of resilient concentric sealing rings for abutment with the annular rim about the incipient mouth of the neck of a bottle in sealing the mouth thereof, preferably two concentric sealing rings, the concentric sealing rings being preferably of scalene cross section having a curvilineal depending vertex comprising the sealing lip thereof and in which the outer face thereof extends from the top portion of the cap at an acute angle toward the inner diameter of the skirt thereof, the outermost of the concentric sealing rings being the longer and the others being stepped progressively shorter from the outermost to the innermost thereof, the concentric sealing rings being spaced apart for abutment of the confronting faces thereof on tightening of the cap on the bottle, the confronting faces of the concentric sealing rings having a common terminus adjacent joinder thereof to the top portion of the cap.

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 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: A plastic bottle cap for use in sealing bottles, the cap having a first annular sealing flange engaging the internal wall surface of the bottle and a second annular sealing flange engaging the top surface of the bottle neck. The second flange is constructed with a flexible tip which flexes relative to the remaining portion of the second flange as it is engaged by the top of the bottle neck to produce a flapper type seal. The cap further includes a tamper-proof ring at its bottom end which is automatically torn away as the cap is unthreaded from the bottle.

Abstract: A milk bottle has an antitamper cap having a plug adapted to fit into the mouth of the bottle. The neck of the bottle is tapered toward the mouth and the cap has means for restraining the top of the neck to keep the mouth in good sealing contact with the plug when the cap is screwed on.

Abstract: A novel connection for a thermoplastic neck to a stub neck portion of a container, comprising a curl on the stub neck portion and a complimentary groove on the neck which cooperate to permit a portion of the neck below the curl to expand when a plug of the closure cap, which is threaded onto the neck, is inserted into the neck. The neck and neck portion have interlocking projections to prevent the neck from turning and the neck and cap having a novel thread arrangement which insures that the plug will properly enter into the neck and provide a good seal which could be frustrated if the neck was permitted to turn.

Abstract: A screw-type closure molded of resilient plastic is provided with an internal thread having a smaller axial pitch spacing than the mating external thread of the container with which it is used, the difference between the two threads being designed to compensate for a number of variables affecting sidewall characteristics around the circumference of the closure, in order to secure more uniform application of sealing pressure and other advantages.

Abstract: A threaded access cover plate construction for boat decks, comprising a threaded fitting which is adapted to be secured to the deck, and a screw closure receivable in the fitting. Both the fitting and the closure have cooperable buttress-type threads which are dimensioned such that there is a relatively loose fit between the two parts. The rim of the fitting is in the form of a resilient upstanding skirt constituted of deformable material, the skirt being capable of yielding at selected points, due to its engagement by a centering shoulder of the closure. The yielding of the skirt permits improved seating of the closure, by minimizing the effect of interference between high points at the regions of contact of the two parts. Accordingly, a highly leak-resistant seal is established, even when the fitting or the closure has become slightly warped, or the fitting has been stressed to some extent by virtue of its being secured to the deck.

Abstract: A pour through stopper which permits dispensing of a liquid from a container without complete removal of the stopper. The construction is such that the stopper defines a dispensing passage through which the liquid passes when it is being poured. An improved sealing arrangement is provided for preventing the accidental discharge of liquid and for protecting and sealing the components of the stopper from the dispensed liquid.

Abstract: A lid for closing a wide mouth bottle has a sealing disc with a depending peripheral skirt. The skirt has an internal helical thread which takes the cross-sectional form of an elongated trapezoid tilted toward the sealing disc. The thread is formed of a flexible material for being deflected away from the disc and wedged against the neck of the bottle by the threads on the neck as the lid is tightened on the bottle.

Abstract: A reusable closure cap for sealing a vial, comprising a rigid tubular screw-type cover having as an integral part thereof a relatively soft highly elastic stopper bonded to the interior of the closed end of the tubular cover. The elastic rubber stopper has a centrally positioned hollow interior portion coaxially with and facing the open end of the vial to be sealed.

Abstract: A one piece screw type bottle cap, a method of applying it and a method of molding it. The cap includes an internal sealing skirt having a cylindrical portion that seals against the internal surface of the bottle neck. The skirt flares inwardly and terminates at an outwardly extending collar which is bent upwardly before applying the cap to the bottle neck, and which engages the neck to form an additional seal only after the threads of the cap interengage with the threads of the neck.

Abstract: A plastic closure is disclosed which has an integral sealing means formed by an annular resiliently deflectable V-shaped wall section with a downwardly and outwardly projecting corner on it for sealing against an upwardly facing sealing surface on a container. The closure also has a stop member projecting downwardly and inwardly from near the top of the closure skirt for engagement against the container mouth during application of the closure on a container to arrest the axial travel of the closure on the container. The closure may have paraffin or wax lubricant either in the plastic material of the closure or on the inside surface to reduce the torque required to seal the closure on a container.

Abstract: A container closure is provided with internal threads which compensate for variations in the external threads of a container neck onto which the container closure is to be threaded. The container closure threads extend inwardly toward the central axis of the closure and, in the illustrative embodiment, define an angle of 30 degrees with respect to the central axis. The closure thread tapers inwardly as it extends toward the central axis and is generally flexible but is sufficiently rigid to prevent the lower thread from contacting an immediately higher thread during flexing of the threads.

Abstract: A bottle and cap construction for thin-walled plastic milk bottles. It has a double thread and an anti-tamper arrangement.

Abstract: A milk bottle has an antitamper cap having a plug adapted to fit into the mouth of the bottle. The neck of the bottle is tapered toward the mouth and the cap has means for restraining the top of the neck to keep the mouth in good sealing contact with the plug when the cap is screwed on.

Abstract: A closure system is provided for a threaded container. A threaded closure cap has an annular skirt which engages a resilient gasket that is stretched over the bottle neck. The resilient gasket overlies a cap support flange which extends from the neck. Downward axial movement of the cap with respect to the container provides a vertical compressive force against the resilient gasket by the cap skirt. A heat shrinkable outer member surrounds the closure cap and provides a tamperproof seal with respect to the container.

Abstract: In a stopper arrangement for bottles of the type having an externally threaded neck closable by a synthetic plastic screw cap, the screw cap has an approximately cylindrical internally threaded wall part which is closed by an upper lid surface. The screw cap is so dimensioned and configured, and is formed of such an elastic plastic material, that the cap can be removed by unscrewing, or can be removed by a conventional crown cork opener. In either case, the cap can be used to re-close the bottle, since it is specially constructed so as not to be destroyed if removed by a crown cork opener.

Abstract: Flask which is fitted with a closure which can be sealed in such a manner as to ensure sterility of its contents and which is characterized in that it is provided at its head part with a thread, preferably a round thread which is connected with a conical ring, and in that the corresponding closure cap has an inner thread so formed as to correspond on the flask, and in which the open end of the closing cap is provided with a recess into which the tamper-proof ring is pressed in.

Abstract: A medication container is disclosed having structure which is both resistant to interaction with stored medicine and protects the medicine from deterioration. The container maintains the stored medicine available for almost instant self-administration by thw user. Plating is preferably provided to inhibit interaction of the container and the medicine. Alternately, the container is made from a material which is impervious and inert to the stored medicine. The container is configured to accommodate the desired dosage of medication. The preferred container has efficient double sealing to further protect the medicine. The container preferably consists of two members which are selectively secured together by novel threads which require only a small amount of relative rotation between the members for connection and disconnection. The threads are plated and configured to achieve a smooth but tight fit and to avoid bonding or sticking between the threads when the container has been closed.

Abstract: An improved seal between a flexible plastic container and its closure cap, wherein the cap is provided with an internal annular shoulder engaging the tapered side surface of an annular lip provided by the neck of the container. The shoulder bears inwardly against the lip with a force sufficient to flex that lip inwardly and maintain the same in a condition of stress. Ideally, the cap is formed of a plastic of limited heat shrinkability at autoclaving temperatures; therefore, heat sterilization of the sealed container and its contents results in slight contraction of the cap and further increases the integrity of the seal. Where the container is formed of plastic material capable of softening slightly at autoclaving temperatures, the shoulder tends to penetrate the lip to a limited extent during such autoclaving to create an undercut in the lip.

Abstract: A combination cap to recap containers of the "snap-on" or "threaded" type which have been opened, partially consumed, and were provided with non-reusable caps by the packager.

Abstract: A bottle cap is constructed with stepped portions, including a large diameter serrated lower portion, an intermediate diameter threaded portion, and a smaller diameter serrated upper portion. The cap is produced by deep drawing on a mold core having a base portion carrying a pedestal, to which a thread-forming portion is rigidly secured. A large diameter, lower serration-forming portion and a small diameter, upper serration-forming portion are rotatably mounted on the pedestal below and above the thread-forming mold portion, respectively. After the bottle cap is formed the pedestal is rotated, to disengage the completed cap from the mold core.

Abstract: A bottle and cap construction for thin-walled plastic milk bottles. It has a double thread and an anti-tamper arrangement.

Abstract: A container-closure combination is disclosed which meets current industry standards for tightness promulgated by the United States Pharmacopoeia XIX and The National Formulary XIV with an application torque of seven inch pounds or less.

Abstract: A screw-type bottle cap molded in one piece from plastic material comprises an internal sealing skirt depending from the top of said cap and adapted to be force-fitted into the externally threaded neck of a bottle, a first sealing lip concentric with said skirt and positioned to engage the upper end of the neck of said bottle when said cap has been screwed home, and a second sealing lip adapted to cooperate with the upper outer surface of said bottle neck. The sealing skirt comprises a short upper portion having a slight outward conicity when unstressed, and the external diameter of which, at its connection to the top of said cap, is greater than the maximum internal diameter of said neck, allowing for manufacturing tolerances. Said upper portion merges into a central portion having an inward conicity, and terminating in a substantially radial collar, the periphery of which is adapted to bend upwardly as the cap is screwed down to form an additional seal with the inner surface of said bottle neck.

Abstract: A screw threaded cap for stoppering and re-stoppering of bottles enclosing gaseous beverages such as beer, has a base comprising a resilient lip adapted to co-operate with the junction of the bore of the bottle neck and its end surface. Ribs limit the distance between the latter and the corresponding surface of the base. The upper portion of the skirt has a rounded profile preventing cracks.

Abstract: The disclosure deals with a method of producing round lids with thread-engagement lugs. A round workpiece of rolled sheet metal is deep drawn to form a cup-shaped lid blank with a depending edge portion and during the deep drawing operation the depending edge portion is stamped with spaced finger grips. The finger grips are, seen from the center point of the round workpiece, stamped in four major directions which lie in the rolling direction of the rolled sheet metal and at right angles thereto. The lower edge of the stamped edge portion is then bent to form the finished lid and its thread-engagement lugs.

Abstract: A plastic closure securely mounted on the external threads at the end of a pipe, tubing, casing, or the like for protecting the external threads from damage. The closure comprises a tapered sleeve which is normally uncompressed and compressed by tightening a metal strap enclosing the sleeve for securing it to the pipe end. When the closure is mounted on the pipe end in its compressed condition, threads on the inner peripheral surface of the sleeve are urged into engagement with the external pipe threads for tightly securing the closure to the pipe end. The sleeve has a conical seat for the strap in its normal uncompressed condition, and in the compressed condition of the sleeve the seat is cylindrical relative to the axis of the sleeve. The sleeve has a flat surface on which the strap seal is placed and a slot for receiving a projection on the strap to prevent circumferential movement of the strap before and during tightening.

Abstract: A display and storage device for articles such as coins, medals, tokens and the like includes first and second mating cup members of a transparent material, each of the cup members having threaded surfaces enabling the cup members to be screwed together encapsulating the article and forming a generally airtight enclosure for the article. A plurality of the storage devices may be mounted on an apertured display board either directly or by way of a two piece holder including a pair of threaded cup members.

Abstract: A vented top for a bacteria culture medium tube having a body with through openings to hold one or more tubes simultaneously. A cap closes off all openings or opens them together. Vent means enable automatic venting of gases generated by the bacteria.

Abstract: A kit of parts for forming an enclosure for a cable splice that rigidly fixes two or more spliced cables and moisture proofs the splice and exposed cable ends. The kit includes a vial partially filled with a body of sealant and a plug which receives the cable ends and then may be positioned in the vial and partially immersed in the body of sealant. By immersing the plug in the body of sealant, the sealant is forced upwardly and around the cable ends to fully enclose the cable splice and the cable ends in the sealant. Arms associated with the plug act to retain the plug on the vial.

Abstract: A one-piece reusable closure for home canning. The closure is adapted for sealing home canning containers, such as "Mason Jars." The closure has a one-piece threaded cap with a bonded annular closed-cell foam gasket at the periphery of the central cover section positioned to seal against the jar lip. A central cover portion is dished outwardly and moves to an inwardly dished configuration when a partial vacuum is developed in the container. When the closure is unscrewed, the central cover section springs with an audible click to the outwardly dished configuration. The closure incorporates a stop mechanism to limit the extent of gasket compression by limiting the threaded engagement of the closure with the container. The mechanism can comprise either a deformed thread groove or a lower edge of the closure adapted to abut a flange on the container when the desired gasket compression is achieved. The compression of the gasket material against the lip of the container is thus limited to a predetermined degree.

Abstract: An improved sealing apparatus for applicators of the type having means for sealing an exposed surface of an applicator from the environment comprises means for positively locking the sealing means, means for unlocking the sealing means and means for disengaging the sealing means.