Abstract: Disclosed is a pressure vessel including a boss extension portion having a cylindrical shape in which a through hole is formed at a central part to pass therethrough and a boss flange portion formed below the boss extension portion and integrally expanding outward in a radial direction along a circumferential direction in which the through hole extends in a vertical direction inward in the radial direction, a liner portion having a container shape in which an accommodation space configured to communicate with the through hole is formed to accommodate a fluid therein while a top is insertion-injection molded and seal-coupled along a bottom surface of the boss flange portion, and a sealing portion seal-coupled to a boundary area between a bottom of the boss flange portion and a top of the liner portion to block a leakage of the fluid accommodated in the accommodation space.

Abstract: A baby bottle including an accordion cover is disclosed herein. The bottle has a nipple connected at an open end, with a collar removably connected at a meeting point of the bottle and the nipple. The accordion cover is connected to the collar, and may be movable, while remaining fixedly connected to the collar, between an upward configuration, a downward configuration, and a compressed configuration. The nipple is covered and protected from contamination.

Abstract: A pierceable self-resealing stopper for a container is disclosed. The disclosed stopper is suitable for sealing a container containing reagents for use in a high-throughput analysis system in which reagents in the container are accessed by an aspirator probe piercing the stopper. The stopper is configured for being pierced and resealing itself a large number of times without degradation of the stopper by coring or fragmentation, for example. A set of protrusions extending from a top surface of the stopper is depressed to stretch a thin diaphragm area between the protrusions prior to and during insertion of the probe. After extraction of the probe, the protrusions are allowed to return to a relaxed state, which discontinues stretching of the diaphragm area and reseals the container.

Abstract: A pressure vessel for storing a fluid at high pressure includes: a liner and a composite laminate shell coupled to an outer surface of the liner. The liner has an inner surface delineating an inner wall of a cavity and the cavity includes a dome-shaped region having a central opening. An access channel is traversing the composite laminate shell for providing an access to the cavity. The central opening is facing an entrance of the access channel. A boss connector, located or partly located within the access channel, includes an inner bore part configured for receiving a valve or a plug, and an outer neck part including a plurality of interspaced rib elements protruding into the composite laminate shell for optimizing a pressure distribution in the laminate shell.

Abstract: A spout assembly with a spout and a cap. The spout has a cylindrical sidewall; a cylindrical base at the lower end of the sidewall and having a larger outer diameter than the sidewall; and a disk-like flange extending outward from the lower end of the base. The cap has a cylindrical peripheral wall with an internal thread and is screwed onto the upper end side of the spout sidewall. The spout sidewall also has a projection formed between the external thread and the recess so as to extend circumferentially and have a height lower than a height of the external thread, and with the cap screwed onto the spout, at least a portion of an upper surface of the base fits an inner side of a peripheral wall of the cap.

Abstract: The container system having a container and a screw-on cap that may that may be screwed onto the container and having an olive that is molded onto the screw-on cap and that is positioned against an annular edge area of the container opening is characterized in that the olive is molded onto the screw-on cap such that it fits against the exterior annular edge area of the container in a sealing manner, and in that the outer annular edge area has a continuously smooth surfaces.

Abstract: Described are embodiments of a light engine installation kit and methods of installation that allow a single technician to install large, heavy, or awkwardly shaped light engines into new or existing fixture housings. The installation kits include mounting brackets that install into the fixture housing. The mounting brackets can then support the light engine by a retention tab at one end, and a tether at the other. In this intermediate position, an installer can complete the wiring before raising the light engine into its final position. Also described are lenses, wireway covers, reflectors, and end caps that provide improved sealing of the lens compartment of a light engine. The fitting of the parts provides better sealing to prevent dirt, debris, or insects from migrating into the lens compartment of the light engine and causing reduced light output or unsightly dark spots in the lens.

Abstract: A collapsible bin is provided. The bin includes a pair of opposing side panels. The bin further includes a pair of opposing end panels. At least one of the end panels has a first plurality of male interlocking members extending outward a first distance along an upper portion of a first side edge, and a second plurality of male interlocking members extending outward a second distance greater than the first distance along a lower portion of its first side edge. At least one of the side panels includes a plurality of female interlocking members along a first side edge for receiving the first and second pluralities of male interlocking members extending along the first side edge of the at least one side panel.

Abstract: A dry powder inhaler comprises at least one medicament reservoir and a closure member engaged with the reservoir so as to close an opening therein. A surface of the reservoir adjacent the opening and a surface of the closure member are in abutment, either directly or via a seal member interposed between the reservoir and the closure member. At least one abutting surface is formed with a projection that increases the contact pressure between said surfaces, thereby improving the seal between them and reducing the potential for ingress of moisture between said surfaces into the reservoir.

Abstract: A container for storing matter provides a container body having a resilient flange protruding outward therefrom to form a seal between the container body and a mating closure. The resilient flange is deflected by the inner surface of the mating closure to form a first releasable seal between the closure and the container body. The resilient flange includes an aspect ratio of length divided by thickness. A second releasable seal is formed in some embodiments between the upper edge of the side wall and the closure when the mating closure is positioned on the container body.

Abstract: The disclosure includes a cap having a first portion made of a plastic material and forming a bottom for covering a container neck and a protective side wall for surrounding the container neck, and a second portion made of a flexible material that is compatible with the plastic material of the first portion and separate from the plastic material of the first portion, the second portion being annular and consisting of a flexible seal, which projects from the bottom toward the interior of the side wall and which is welded to the first portion. Thus, the manufacture of the stopper by molding includes injecting a flexible material to produce the flexible annular seal and then the movable portions of the mold are placed such that the flexible material is in a groove that is set back from the planar surface of the mold.

Abstract: A lid (16) for closing an opening (12) of a container (10) comprises a sealing foil (26) which is sealable to a fringe (14) of the container opening (12) and the sealing foil (26) is formed tearable and/or is attachable tearable to the fringe (14) of the container opening (12). Therefore, the sealing foil (26) is fixed directly at the lid (16) and the fixing connection (28) is formed between the sealing foil (26) and the lid (16) more weakly than the intended sealing connection (34) between the sealing foil (26) and the fringe (14) of the container opening (12).

Abstract: There is provided a pressure vessel. The pressure vessel may include a nozzle-boss comprising a neck part including a hollow portion and a flange part extended outward from the neck part, a liner coupled with the nozzle-boss to provide a space filled with a fluid therein, and a sealing part inserted into a lower end of the neck part to prevent a spillage of the fluid via a boundary between the nozzle-boss and the liner by preventing a direct contact between the fluid and the boundary.

Abstract: A secondary container assembly includes a skirt configured to securely and removably engage the rim of a beverage can. The secondary container includes a secondary compartment holding a secondary liquid. A primary flow channel extends through the secondary container to provide a fluid flow path from the open beverage can to an outlet of the secondary container. A plurality of mixing apertures provide fluid communication ports between the secondary compartment and the primary flow channel, allowing the secondary liquid to mix with beverage from the can in the primary flow channel. A vent tube prevents a vacuum from forming that would otherwise impede flow of the secondary liquid into the primary flow channel. A removable seal covers the outlet and mixing ports. A threaded lid holds the seal in place.

Abstract: A resealable, thin-walled packaging having snap-in closure wherein the packaging sheath has an, open plug-in collar that receives a snap-in closure with a form-shaping support part that extends into the collar.

Abstract: A food container is disclosed that is adapted for facilitating venting of gasses to and/or from the interior of a body of the food container. The food container includes a container body, a lid and a sealing membrane. At least one skip seal or gap is formed between the sealing membrane and the container body to facilitate venting. During formation of the at least one skip seal a recess in either the lid or rim of the container reduces pressure at the skip seal to reduce or eliminate inadvertent closing of the skip seal.

Abstract: An aluminum bottle suitable for containing sparkling beverages such as champagne. The finish portion of the bottle comprises a collar which fits over the neck of the bottle to form a muselet flange.

Abstract: Embodiments of the invention provide an adapter suitable for use with cups and lids. In some embodiments, the adapter is designed so that a single lid with a predetermined diameter fits, by way of the adapter, with paper cups of different diameters. In some embodiments, an adapter including an inner diameter that corresponds to the upper diameter of the paper cup cooperates with the upper portion of the cup. The adapter also includes an outer diameter that corresponds to the predetermined diameter of the lid to ensure a secure fit between that particular sized cup and the plastic lid having a predetermined diameter.

Abstract: The present invention is a collapsible cover used to protect an open beverage container from tampering. It is compact and easy to carry and use, is attractive and may be decorated with sports team logos or University symbols or other works of art. It has deep enough extended side walls to prevent someone from unobtrusively removing it to contaminate the beverage and is not too cumbersome to carry in a purse or pocket. The collapsible cover is available in different diameters to allow covering beer or soda cans, bottles, mixed drink glasses or wine glasses. It also has an opening for inserting a straw so that the cover does not have to be removed to consume the beverage.

Abstract: The present invention concerns a container having a body formed by wall or walls with a greater diameter S1 and at least a neck with a diameter S2, container made from a semi-crystalline PET, having a wall thickness of less than 100 ?m, substantially in the middle of its body and having a complex, three dimensional shape convenient for gripping, this part having a diameter S3.

Abstract: The present document describes a cap (110) for closing a container (114), the container having a neck (112) with an upper edge (118) defining a discharge opening (116). The cap comprises a lid (122) and a seal gasket (136) for sealingly engaging the neck of the container. The lid has at least one inwardly extending projection (132) for supporting the seal gasket.

Abstract: An environment-friendly foamed container closure laminate with embossed tabs is composed of, from top to bottom, a stiff polymer printing layer—the top surface of a half thereof is embossed, the bottom surface is printed; a stiff polymer reinforcement layer—its half bottom surface is embossed and the stiff polymer printing layer laminated with the stiff polymer reinforcement layer is used as a tab (if no printing is necessary, the stiff polymer printing layer and the stiff polymer reinforcement layer are combined to be a tab layer); a soft polymer foam layer—used as a sealing gasket; a high melting point polymer isolation layer—to insulate the heat transfer from the electromagnetic induction heated metal layer to the soft polymer foam layer; an electromagnetic induction heatable metal layer; and a peelable thermosensitive adhesive layer.

Abstract: A highly portable solar UV disinfection and water storage container with a uniquely traceable security seal that passively indicates by means of a permanent photochromic color change the efficacy of the UV disinfection process performed upon the drinking water within the sealed container.

Abstract: In a method for the manufacture of a cartridge, in a first step, a storage chamber for the reception of a filler material, a neck which contains an outlet passage for the filler material, and a closure stopper are manufactured in a single workstep in an injection molding process. The outlet passage has an end, wherein an outlet opening is arranged at the end of the outlet passage. The closure stopper has an arm, wherein the outlet opening is held at least partly closed by the arm of the closure stopper. The arm has a first end, wherein the first end of the arm is connected to the neck by a bridge element. A desired break point is formed by the bridge element and the closure stopper is connected to the cartridge in one piece via the bridge element.

Abstract: A closure for a container (14) comprises a first portion (12) for mounting to the container and a second portion (10) adapted for mounting to the first portion. When the second portion is removed from the first portion it opens the container. When the first portion is mounted to the container and a deformable seal (66) is positioned therebetween, and when the second portion is then mounted to the first position, the seal is deformed and is simultaneously able to seal between the first portion and the container, and between the first portion and the second portion.

Abstract: The present invention is a non-removable closure. A non-removable closure in accordance with the present invention may comprise (a) a first sealant layer; (b) a sealant interface layer; and (c) a second sealant layer. A non-refillable container for flowable materials in accordance with the present invention may comprise: (a) a cap; (b) a first sealant layer; (c) a sealant interface layer; (d) a second sealant layer; and (e) a flowable material receptacle. A method for manufacturing a non-removable bottle closure in accordance with the present invention may comprise the steps: (a) disposing a first sealant layer on a first surface of a sealant interface layer; (b) disposing a second sealant layer on a second surface of the sealant interface layer; (c) adhering the first sealant layer to a cap; and (d) adhering the second sealant layer to a receptacle mouth.

Abstract: The present invention relates to a reversible child resistant cap and a closure system having two positions, the first being a child resistant position and the other being a non-child resistant position.

Abstract: An elastomeric dispensing container for a fluid includes an elastomeric receptacle defining a chamber therein and having an integrally formed gasket extending radially from an opening formed on a lower end and a receptacle neck providing communications between the chamber and the opening, a relatively rigid sleeve disposed concentrically about the receptacle neck having a sleeve neck with a lower face adjacent to the integral gasket, a cap having a lid covering the receptacle opening and the integral gasket with a dispensing orifice formed therein and a cap neck extending from the lid disposed concentrically about the sleeve neck, and engaging means formed on the sleeve neck and the cap neck providing removable attachment therebetween wherein the engaging means secures the integral gasket in a compressed and substantially fluid-tight state between the lid and the sleeve lower face.

Abstract: A container unit for a drug is composed of a container, which is formed of a cylindrical drug-solution-containing portion and a drug-solution-filling neck portion, and a rubber closure for sealing the drug-solution-filling neck portion. The rubber closure comprises a disk-shaped head portion and a substantially cylindrical leg portion arranged on a lower wall of the head portion. The container is provided with a flat surface formed on a side of its inner wall at a boundary between the drug-solution-containing portion and the drug-solution-filling neck portion such that a lower end wall of the leg portion of the rubber closure can be brought into close contact with the flat surface, and at least a side wall of the drug-solution-containing portion forms a cornerless, rounded surface on a side where a drug solution is to be contained.

Abstract: An anesthetic container includes a bottle having a wall defining a receptacle and a neck with a passage in fluid communication with the receptacle, a valve assembly including a flange, and a ferrule disposed over at least a portion of the flange of the valve assembly and about at least a portion of the neck of the bottle to secure the valve assembly to the bottle. One of the wall of the bottle, the flange of the valve assembly or a wall of the ferrule has at least one vent formed, at least in part, therein that permits air trapped between the ferrule and the valve assembly or the bottle to escape.

Abstract: An elastomeric dispensing container for a fluid includes an elastomeric receptacle defining a chamber therein and having an integrally formed gasket extending radially from an opening formed on a lower end and a receptacle neck providing communications between the chamber and the opening, a relatively rigid sleeve disposed concentrically about the receptacle neck having a sleeve neck with a lower face adjacent to the integral gasket, a cap having a lid covering the receptacle opening and the integral gasket with a dispensing orifice formed therein and a cap neck extending from the lid disposed concentrically about the sleeve neck, and engaging means formed on the sleeve neck and the cap neck providing removable attachment therebetween wherein the engaging means secures the integral gasket in a compressed and substantially fluid-tight state between the lid and the sleeve lower face.

Abstract: A resource-saving neck of a synthetic resin bottle having high resistance to pressure and heat and a high, stable sealing property is provided. The part is aimed at equalizing an effect of thread-formed portions on the crystallization of a molten resin material along the circumferential direction of the part. These objectives are achieved by (1) forming screw threads of a multi-threaded screw structure on the outer surface of the neck wall, each screw thread comprising a main thread, with a starting and ending extension, with a width and height thereof being reduced gradually; (2) disposing the starting extension of a screw thread vertically above the ending extension of another thread; and (3) whitening the entire part by thermal crystallization. Sinks are prevented in the neck wall, and the height can be restricted despite increase in the diameter.

Abstract: An apparatus is provided for containing a fluid, and for controlling the release and flow of the fluid. The apparatus includes a container having a mouth, a neck with a circumferential sealing region on its inner surface, a body, and a resistance stop. The apparatus further includes a barrier flap which can significantly arc transverse to its length, disposed within the neck of the container, and hingedly pivot between “open” and “closed” positions. The barrier flap is cooperative with the circumferential sealing region and the resistance stop within the neck. Squeezing the body increases internal pressure within the container, resulting in a release of the barrier flap past the resistance stop, allowing the fluid to flow out of the container. Also, squeezing the neck causes arcing and release of the barrier flap, allowing the fluid held in the container to flow past the barrier flap and out of the container.

Abstract: A neck finish of a preform or container having a crystallized top sealing surface (TSS) for withstanding deformation from multiple use cycles. In a returnable and fillable container, the improved TSS has enhanced caustic stress crack resistance resulting in a more secure finish-closure seal and an extended container life (number of refill cycles).

Abstract: A tamper-indicating closure includes a plastic shell having a base wall with an annular skirt, at least one internal thread segment on the skirt, a tamper band frangibly connected to the skirt, and a circumferential array of angularly spaced flexible resilient ratchet wings extending counterclockwise from an inner surface of the tamper band at an angle to the inner surface. A flexible resilient sealing liner on the base wall within the skirt has a conical sealing surface that faces radially outwardly toward the skirt and axially away from the base wall. The conical sealing surface is resiliently engageable with a trim flange of a container to which the closure is applicable so that the tamper band separates from the annular skirt before loss of sealing engagement between the liner and the trim flange.

Abstract: The current invention relates to a dispenser comprising a container (A) for holding a product to be dispensed and a dispensing mechanism (B), said dispenser comprises i. a container body (Q) having a bottom (E), and a means for interconnecting said bottom with a side opposite thereto; said container body further including at least one outlet opening (F) arranged in or near the side opposite to said bottom, preferably in or near the upper half of the means interconnecting the bottom with the side opposite to said bottom, ii. a conduct (G) connecting said container body, extending from the outlet opening (F), with said dispensing mechanism, iii. a trigger sprayer (H) and, iv. a neck (K) connecting said trigger sprayer (H) with said conduct (G) wherein said neck (K) and said conduct (G) are linked to said container body (Q) so that said neck (K) and said conduct (G) form a swan-neck or a U-shape extending from said outlet opening (F) so as to exchange air pressure and product to be dispensed.

Abstract: It is intended to provide a synthetic resin bottle, in which the stable no-leak condition can be maintained up to a certain cap-turning angle, and air-tightness of the bottle can be fully secured, even if the cap is falsely turned. The body 2 of the synthetic resin bottle is configured to have a smooth seal surface 8 with no irregularity over the entire circumference in the upper portion of the outer neck wall where no parting line is formed. In this configuration, a stable no-leak condition can be maintained up to a certain cap-turning angle, and air-tightness of the bottle can be fully secured, even if the cap is falsely turned.

Abstract: In a wide-mouth plastic container including a container body 2 provided with a mouth portion 3, a body portion 4 and a bottom portion 5 and a lid 6 fitted to the mouth portion 3, the body portion 4 is provided with an internal pressure variation-absorbing panel 4a and the mouth portion 3 is heat-sealed with a film material 7 to seal the opening of the container body 2, thereby securing high sealing property and heat resistance in high-temperature sterilization and improving the internal pressure variation absorbing performance of the container.

Abstract: A container for collecting and storing breast milk. More particularly, one embodiment provides a container for collecting and storing breast milk obtained using a breast pump, comprising: a body, wherein the body has an open end with a lip, a closed end and a cavity between the open end and the closed end for receiving therein the breast milk; a cap; a hinge disposed adjacent the open end of the body for connecting the cap to the body; a sealing mechanism disposed on the cap, wherein the sealing mechanism provides a resealable, watertight seal between the cap and the lip of the body when the cap is placed thereon; and at least one thread disposed at the open end of the body, wherein the thread is configured to provide a screw-on connection between the body and the breast pump.

Abstract: The present invention relates to a reversible child resistant cap and a closure system having two positions, the first being a child resistant position and the other being a non-child resistant position.

Abstract: For sure sealing and easy handling, the plugging type dental liquid housing container comprises a container main body 1 having a holding blade plate projected on an outer circumference of a liquid housing part 1a; a flat face 1ea, a slope face 1eb and a stepped face 1ec at of an opening end; and an inner face taper part 1d provided on the opening side of an inner face 1c of the liquid housing part 1a so as to have an inner diameter gradually decreasing toward the bottom side, and a plug body 2 having a contacting blade plate 2b projected on an outer circumference thereof; a truncated conical shape part 2e at a bottom; and plural annular projection ridge parts 2f formed above truncated conical shape part 2e so as to contact with a portion on the bottom side of the inner face taper part 1d.

Abstract: A package, especially for granular, powdered or fluid product, includes a container with a spout extending upward and inward from a threaded neck and then flaring outward to terminate in a circular rim forming a wide mouth container opening. A closure as an end wall coextensive with the container rim in a skirt curving downward and outward with threads formed on an inner surface at a cylindrical lower end. Sealing elements include an annular sealing flange extending downward and inward from the end wall and having an outer sealing surface which seals against the inner surface of the flared portion of the container. An upper portion of the inner surface of the skirt formed by an annular rib extends downwardly and outwardly from the end wall to form an upwardly converging gap into which the flared portion is wedged as the closure is applied to the container.

Abstract: A sealed container including a container and a closure member for sealing the container over a range of internal pressure.

Abstract: A closure system useful for storing fluids under cold storage conditions. The closure system includes cap and container components which combine to form a dual sealing system. The container has a generally cylindrical side wall, a closed bottom end, and an open top end having an inner beveled lip depending from an annular top rim. The cap has a generally circular top wall from which inner and outer skirts depend. The outer skirt is adapted to grip the open top end of the container. The inner skirt includes an outer surface having a lower seal bead and an upper beveled portion mated with the beveled lip. When the cap is fitted onto the container, the seal bead contacts an inner surface of the container and the upper beveled portion and the beveled lip are engaged in an interference fit, thereby impeding the loss of fluid from the closure system under cold storage conditions.

Abstract: A container finish comprising a helical load carrying member which transmits downward force from the top wall of a closure to the threads of a container to prevent seal failure under stacking load conditions. The helical load carrying member is preferably located on a container neck, parallel to a primary thread. In the alternative the helical load carrying member may be located on a closure finish.

Abstract: A container and closure package in that includes a container having a body, a finish wall extending from the body with at least one external thread, a circular throat at an axial edge of the finish wall remote from the body and having a lesser inner diameter than the finish wall, and a pour spout extending axially from the throat at greater inner diameter than the throat. The container body, finish wall, throat and pour spout are of integrally blow molded construction as formed, with the inside diameter of the throat being optionally reamed as required for sealing engagement with the closure. The closure has a base wall, a peripheral outer skirt extending from the base wall with an internal thread for receipt over the external thread on the container finish wall, and an internal skirt extending from the base wall and spaced radially inwardly from the outer skirt for sliding plug-sealing receipt within the throat, with the pour spout being disposed between the inner and outer skirts of the closure.

Abstract: A closure for a container with a neck portion and an external helical thread formed on the neck portion includes an upper wall and a skirt formed integrally with and extending generally downwardly from the upper wall. An internal helical thread is formed on the skirt for engaging the external helical thread of the neck portion to thereby secure the closure to the container. The internal helical thread is preferably asymmetrical in cross section. A first annular seal extends generally radially inwardly toward a central axis of the closure from the inner skirt surface. The first annular seal sealingly engages the outer surface of the neck portion. A second annular seal extends generally axially downwardly from the upper wall and sealingly engage an inner surface of the neck portion. A thickness of the neck portion between the first and second annular seals is greater than the distance between the first and second annular seals before installation of the closure on the container.

Abstract: A tamper-evident, snap-on, screw-off closure is used with a specially shaped container neck. One neck has double lead external threads and, below the threads, a conical wall having external ratchet teeth. The closure has an upper skirt having internal threads mating with the neck threads. A conical lower skirt is connected to the upper skirt by a plurality of frangible bridges. The lower skirt has internal ratchet teeth to mate with the neck ratchet teeth. The cap skirt threads are double pitch and slightly over 360° in length. When the cap is applied to the neck it snaps on in two stages. The lower skirt has a tear tab which, when pulled, fractures the lower skirt on a vertical line. Continued pulling on the tab sequentially fractures the bridges. Another neck has a neck stretch with multiple neck threads and a locking wall below the neck stretch with a plurality of external teeth.

Abstract: The neck of a container has a smooth seal surface engaged by the inner skirt or plug of a cap. Such surface is free of trim and parting line flaws which are characteristic of blow-molded jars because the surface is formed in such a way that the seal surface is not in contact with mold parting lines and further the trim (excess plastic) of the neck is located away from the sealing surface. In one form of the disclosure, above the sealing surface the neck wall slants outward and then bends upward-inward in a short, tapered stretch about 18.degree. to the horizontal which engages the underside of the cap disk to compress against the disk or a liner or foil. Other forms of seal surfaces are disclosed In another form of the invention, above the seal surface the neck extends outward and then upward and then inward in a flange which is trimmed along a line which has a circumference no less than the circumference of the seal surface.

Abstract: A child resistant cap including relatively thin threads which, when the cap is in a relaxed condition, are spaced from the bottle neck, said spacing permitting the cap to be squeezed inward at points on opposite sides of the cap so that the cap responds to the squeezing by expanding outward at points ninety degrees from the squeezing points so that stops on the cap at the cap expanding location will miss the stops normally engaged when in a relaxed condition, thereby permitting the cap to be removed from the bottle. The cap may also include a guide ring in the cap interior to guide the cap over the bottle neck to help ensure that the cap is centered on the bottle opening. The cap may include pressure pads on the cap skirt outside near the cap bottom showing the user where to press and stiffening the portion of the cap where pressure is to be applied. And, the cap may include a tamper indicating ring which will separate from the cap the first time the cap is removed from the bottle.