Abstract: The present invention provides a retortable container which has an engagement ridge (19), of an outer diameter D.sub.1 smaller than an inner diameter D.sub.2 of a thread of a cap (20), formed on the outer circumference of the neck (13) near the top face thereof and an engagement portion (26) having an engaging hook (26a), capable of engaging with the engagement ridge (19) of the neck (13) under the condition that engagement of the neck (13) and the cap (20) is completed, being formed integrally therewith on the bottom surface of the top wall (21) of the cap (20), whereas the engagement portion (26) is formed in a shape of cylinder having a wall thickness smaller than the wall thickness of the circumferential wall (28) of the cap (20), and the engaging hook (26a) protrudes in an annular shape inwardly from the open bottom end of the engagement portion (26).

Abstract: A preform, a process for forming the preform and a container formed from the preform are disclosed. The preform comprises a tubular body portion having an open end and a closed end. At a location near the open end, a flange extends outwardly from the tubular body portion. A closure retaining element is provided for engaging a closure. The closure retaining element is formed separately from the tubular body portion and includes a manner for attachment to the tubular body portion. The closure retaining element is attached to the tubular body portion adjacent the flange via the manner for attachment.

Abstract: A squeeze contour seal assembly includes a container and a cap. The container has a neck portion which forms an opening. The neck portion has first and second wall thicknesses and screw threads for engaging the cap. The first wall thickness is greater than said second wall thickness. The cap has grooves for engaging the screw threads and a plug seal for releaseably engaging the opening when the screw threads and the grooves are threadably engaged. The second wall thickness engages a slot formed between the plug seal and the cap, thereby creating an interference fit between the neck portion and the plug seal and providing a leak free seal.

Abstract: A sealing device comprises a container and a synthetic resin cap attached to the mouth portion thereof. The synthetic resin cap has a cap main body composed of a top plate portion and a tube portion extending downward from the periphery thereof, the tube portion being separated by means of a tearable weakening line into an upper main portion and a lower tamper-evidence ring portion, a threaded portion being formed on the inner wall surface of the main portion, and erectable engaging projections being provided on the inner wall surface of the tamper-evidence ring portion.

Abstract: A bottle cap assembly, comprising a main portion, and a lid. The main portion and lid are attached by a hinge. The main portion is selectively secured to the lid with a latch, the latch opposite the hinge. The main portion has a central bore, and the hinge has a plug which fits in the central bore when the cap is closed. The central bore has internal grooves, and the plug has protuberances which match the internal grooves to effect a tight seal between the central bore and plug. The main portion further has an upper groove, and the lid has a ring which fits in the upper groove. The ring is larger in diameter and concentric with the plug. At least one opening preventer attaches between the lid and main portion to prevent inadvertant opening of the bottle and for revealing tampering to the bottle, since the opening preventer can be opened once, and then cannot be restored.

Abstract: A child-resistant container and closure assembly having a container neck with a first screw thread and two first locking elements located below the first screw thread on opposite sides of the container neck. A closure for the container neck has a second screw thread complementary to the first screw thread, a resiliently deformable skirt, and two second locking elements on opposite sides of the resiliently deformable skirt. The first and second locking elements mutually engage in ratchet fashion when the closure is screwed onto a fully engaged position on the container neck and subsequently block unscrewing of the closure unless a radial pressure is applied to the skirt at positions spaced from the locking elements to deform the skirt to release the locking elements. The first and second threads are two-start, fast-turn threads so that the closure can be moved from a substantially fully disengaged position to a substantially fully engaged position on the neck by rotation through about 180.degree. or less.

Abstract: A preform, a process for forming the preform and a container formed from the preform are disclosed. The preform comprises a tubular body portion having an open end and a closed end. At a location near the open end, a flange extends outwardly from the tubular body portion. A closure retaining element is provided for engaging a closure. The closure retaining element is formed separately from the tubular body portion and includes a manner for attachment to the tubular body portion. The closure retaining element is attached to the tubular body portion adjacent the flange via the manner for attachment.

Abstract: A threaded type tamper-indicating closure in which the tamper-indicating ring is separated from the cap element of the closure as the closure is opened, in which the tabs which contact an undersurface of a bead on the outer surface of an engaged container finish are prevented from flexing radially inwardly beyond a limited degree so as to assure that the tabs will function immediately as the closure commences unthreading. In the disclosed embodiment, this is accomplished by positioning the pivot axis of the tabs in substantially a common vertical plane therewith, so that the tabs pivot only slightly radially outwardly as they come into contact with the bead. The tamper-indicating ring includes an upper wall member of relatively reduced thickness to enable both bending and flexing radially outwardly during installation to enable the relatively rigid tabs to clear a radially outwardly extending bead on the container neck or finish.

Abstract: A double ended bottle having two narrow necks at opposed ends of the bottle. Sloped shoulders provide gentle transition between each neck and the full width of the body of the bottle. The bottle is internally open and unobstructed so that a common chamber extends from one opening to the other. Each neck has a threaded cap having two features for sealing against leaks past the cap. In one feature, an internal projection formed in each cap plugs the neck of the bottle. In an alternative embodiment, the neck has a separate adaptor or insert for reducing throat diameter. If this is provided, the projection is accordingly sized. Both the projection and the throat of the insert are beveled for centering the projection within the bore of the insert. The second sealing feature includes an external flange formed on each neck between the threads and the body of the bottle, and a corresponding groove formed in the cap.

Abstract: A seal for a lid or the like and a lid provided therewith are disclosed. Said seal (5) for a lid (2) such as a screw top for the open end (1) of a container (R) consists of a disk or ring loosely fitted in the bottom of the lid (2) and comprises one surface (7) having a ring-shaped lip (8) with a substantially tapered bearing surface (9) compressively engaging a corresponding bearing surface (13) on the open end (1) of the container (R), and a second surface (10) having a circular raised portion (11) with a flat bearing surface (12) slidably engaging the bottom (3) of the lid (2). Said seal may be used in caps on containers for cosmetics.

Abstract: A plastic weld pourer component for connecting to a plastics container part, more particularly a container part of film-like plastics material, comprises at least one welding rib extending circumferentially about a neck portion defining a discharge passage, and having a welding edge or face. The welding edge is provided at a welding flash formed on a rib base portion of the welding rib having a smaller dimension in directions perpendicular to the circumferential direction than that of the rib base portion.

Abstract: The disclosure relates to synthetic resinous container closures having frustoconical sealing surfaces which cooperate with corresponding sealing surfaces on a container finish to effect a gas-type seal. In one embodiment, the closure is particularly suited for use in sealing containers having pressurized contents such as carbonated drinks and the like. In a second embodiment, the closure is of threaded type enabling the reclosing and sealing of the engaged container after an initial opening. This embodiment including a separable tamper-indicating ring. In a third embodiment, the closure is adapted to be used in conjunction with an aerosol dispenser to exclude ambient moisture from the area of the dispensing nozzle prior to first use, and to form a second seal after the closure has been removed for first usage.

Abstract: A consumer friendly package including a plastic closure having multiple threads which engage multiple threads on the finish of a plastic container. The closure has at least one and preferably four radially inwardly extending lugs that engage a radial abutment on the finish of the container to provide an audible click when the closure is fully applied. The finish of the container is provided with at least one, preferably two axial projections that extend downwardly from the threads on the finish and are engaged by the threads on the closure to retard back-off of the closure and eliminate the effects upon sealing of stack up between the tolerances of manufacture of the finish, closure and liner in the closure.

Abstract: A conically threaded closure system is described which provides a compressive radial force to axial force ratio in the range of 4.3-6.2:1, resulting in an optimum stress distribution throughout the thread structures, optimum thread engagement with minimal rotational effort and primary and secondary sealing means. The system comprises a container having a first conical thread structure and a cap having a second conical thread structure disposed on the inside surface of the cap skirt adapted to cooperate with the first conical thread structure. The first and second conical thread structures each have a conical angle in the range of approximately 20.degree. to 30.degree., preferably approximately 24.degree. to 28.degree..

Abstract: A plastic container made from a fusion blend of a post consumer plastic and ethylene polymers and comprising post consumer resin of homopolymer high density polyethylene resin and a small amount of linear low density polyethylene resin. In another form, the container is made from a blend of post consumer homopolymer high density polyethylene resin, virgin high density polyethylene resin with a small amount of linear low density polyethylene resin. The physical properties of the container including stress crack resistance are maintained as contrasted to the loss of such physical properties that have been heretofore resulted from the use of post consumer resins.

Abstract: A closure which comprises a body portion having an open end, a closed end, an inner wall and an outer circumferential wall and an insert. The insert is for engaging a container, wherein the insert is formed separately from the body portion and includes a manner for attachment to the body portion. The insert is attached to the body portion adjacent the inner wall via the manner for attachment.

Abstract: A container or bottle with a cap for resealing where the seal is produced between the upper lip and, if needed, the lateral lip of the container while the interior closing surface of the cap is provided with a sealing mass which can be deformed within limits and which, after opening and resealing of the container with the cap can be deformed to allow venting from the interior of the container by the provision of a depression formed on the lip of the container and into which the sealing mass will extend to effect sealing but which, after opening, and repositioning of the cap relative to the container, will affect only partial sealing of the container.

Abstract: A hollow, cylindrical clutch adapter that surrounds a screw-on end cap and prevents the transfer of excessive torquing forces to the end cap so as to avoid over-tightening the end cap to a threaded neck of a fluid reservoir, such as that common to a squeeze bottle. The squeeze bottle includes an outer body that surrounds the fluid reservoir and a hollow head that surrounds the clutch adapter and is rotatable relative to the outer body. The clutch adapter includes a series of parallel aligned splines or teeth projecting radially inward thereof so as to be respectively interspersed between the usual ridges that are molded into the end cap, whereby to insure that a rotational force applied to the clutch adapter will be transmitted to the end cap. The hollow head is rotated to apply a corresponding rotational force to the end cap via the clutch adapter located therebetween.

Abstract: A threaded tamper indicating closure-container package provides an indication of initial opening by how far the closure threads onto the container neck. In the original package condition the bottom of the closure skirt is adjacent a shoulder on the container. After the package has been initially opened and the closure reapplied, the bottom of the closure skirt is noticeably above the container shoulder. A word message such as "opened" can also be exposed on the container neck between the shoulder and the bottom of the closure skirt when the closure is reapplied.

Abstract: A container closure locking assembly (40) includes a plastic container (42) having a body portion (54) for holding the contents, a lower closed end (56) for supporting the container (42), and an upper dispensing end (58). The upper dispensing end (58) includes a neck (60) and a round dispensing spout (64) having a central axis (A). The dispensing spout (64) extends upwardly from the neck (60) and further includes an external closure thread (68), a retaining flange (70), and a rotational positioning formation (72). A plastic lock ring (44) molded separately from the container (42) extends around and is supported by the neck (60) of the upper dispensing end (58) of the container (42) below the external closure threads (68) of the dispensing spout (64).

Abstract: A twist-off closure is disclosed for all kinds of containers having a head and a closure cap. The container head has at its top end a sealing lip shaped as a circumferential bead. A steep, multiple-start thread is located below the sealing lip. A fin is arranged between each winding of the steep thread and the container shoulder. The closure cap has a corresponding inner thread that co-operates in the closed state with the fins of the container head causing the closure cap to be clamped, so as to prevent the container from being unintentionally opened by itself. In the closed state, the first part of the windings of the thread of the closure cap engage the fins of the container head, and this is clearly perceived as a pressure point when twisting the cap by hand. All that is required to open and close the closure cap is to twist it through a half turn.

Abstract: Thin wall metal cans are described having threaded necks for receiving threaded closure to seal contents in the cans. Techniques for forming such threaded cans are also provided.

Abstract: An anti-backoff screw cap construction for a container neck having a thread with a downwardly-facing pressure face and an upwardly-facing relief face. The cap has a depending skirt having an internal thread with an upwardly-facing pressure face for engagement with the downwardly-facing pressure face of the container neck thread. Engagement results in tightening of the cap on the container neck when the cap is turned in a screwing-on direction. The cap thread has a downwardly-facing relief face having as an anti-backoff structure, an elongate, substantially helical, resilient projecting bead which is integral with the cap thread, the bead being coextensive with an uppermost portion of its downwardly-facing relief face and being directly engageable by the upwardly-facing relief face of the container neck thread. The projecting bead is resiliently deformed by its engagement with the upwardly-facing relief face of the container neck thread when the cap is turned in its screwing-on direction.

Abstract: A plastic container comprising hollow plastic body including a side wall, a base wall, a shoulder, an integral neck and an integral finish on the upper end of the neck. An integral laterally extending flexible handle is provided on the neck below the threads or the like that are positioned on the neck for receiving a closure. The handle may be of a number of configurations including a T-shape or annular bail-type shape. A method and apparatus for making the container comprises injecting, extruding and blowing wherein the finish and the integral handle are first injection molded and thereafter the neck and body are formed by extrusion of plastic integrally with the finish followed by blow molding of the hollow container.

Abstract: The invention relates to a container (1) with a child-resistant cup-shaped closure (10), the opening of the said container (1) being a neck (2) with an external thread (3) in the form of a thread groove (4) for interaction with a radial projection (15) on the internal circular side wall (11) of the cup-shaped closure (10), whereby the thread (3) has a blocking device in that side (4a) of the thread groove (4) which is in frictional engagement with the projection (15) when the closure (10) is being unscrewed, so that the projection is caught by the blocking device when unscrewing the closure.

Abstract: A closure-container package is illustrated in which the closure is pressed-on to the container neck and threaded off the container neck. Either the container neck or the closure has a helical thread which engages axially extending ribs on the other of the container neck or closure to form indentations in the ribs which act as threads, teeth or a track for unthreading. A continuous or rotary seal is used between the container neck and the closure which does not require a sealing force from the threaded connection.

Abstract: Two cap modifications are disclosed for use on water bottles to be installed in water dispensers. A central conical well in the top of the cap is formed with a scoreline. When the bottle is lowered into a dispenser, a probe of the dispenser enters the well and causes it to split along the scoreline. When the bottle is raised, the well substantially returns to initial condition, inhibiting spillage of any liquid remaining in the bottle.

Abstract: A reinforced finish is on a blow-molded container. An insert is permanently attached on the finish of a preform from which the container is blown, or directly on the finish of the blow-molded container. The insert is ring-shaped, forms a portion of the top surface of the finish, is made from a rigid plastic material, and is positioned entirely above the threads.

Abstract: A container closure assembly comprises a container neck, a closure for the neck and a tamper evident ring frangibly coupled to the closure and retained on the neck when the closure is removed from the neck, wherein the tamper-evident ring has a generally non-circular shape. Preferably, the tamper-evident ring is substantially polygonal, e.g. substantially square, with outwardly curved sides and arcuate corners. The tamper-evident ring is retained on the neck by hooks that abut against a shoulder on the container neck.

Abstract: The present invention employs a plastic snap-on cap which engages the neck crown and is internally threaded to engage the neck threads of a conventional container. A foam gasket under the top of the cap prevents leakage by sealing against the neck lip. The cap has internal threads which snap over and then engage under the neck threads. Vertical "barriers" below the cap threads prevent unscrewing the cap so long as the cap skirt is intact. Score lines extend from the bottom edge of the cap skirt to above the internal cap bead which engages the neck crown and extend up to the cap threads. A tear tab is used to tear a vertical strip of the skirt which extends up between the score lines. The cap is thus tamper-evident since it cannot be removed so long as the cap is intact but can be removed by tearing the aforementioned strip. In one modification, a well is formed in the center of the cap.

Abstract: A container for use with tamper-evident closures, or tamper-evident child-resistant closures, having tamper-evident bands is provided. The container has threads for engaging corresponding threads on the tamper-evident closure. The container further has ramps for engaging tamper-evident elements on the tamper-evident band of the tamper-evident closure. The ramps hold the tamper-evident elements down while the closure is being rotated off of the container. Furthermore, the slant of the ramps actually serves to force the tamper-evident elements downward while the closure is rotated off. This greatly enhances the ease of removal of the tamper-evident closure, thus making the closure far easier to use, without sacrificing the important tamper-evident quality. Furthermore, the accelerated separation of the band from the closure enhances the tamper evidency features of the package by causing band separation upon distortion, before the closure/bottle seal is broken.

Abstract: A container, which may be injection molded in a single mold, includes a main body and a hollow cylindrical neck. The neck extends along a main axis and has a proximate end connected to the main body and an open distal end. The neck includes a generally cylindrical inner layer formed of a first thermoplastic material, a generally cylindrical middle layer located radially outward of the inner layer and formed of a second thermoplastic material having a greater heat resistance than the first thermoplastic material, and a generally cylindrical outer layer located radially outward of the middle layer so that the middle layer is at least partially sandwiched between the inner and outer layers. The outer layer is formed of the first thermoplastic material.

Abstract: A tamper-evident closure and specially shaped container neck. The closure has an upper skirt with an engagement structure on the interior of the skirt which cooperates with an engagement structure on the neck. The closure and neck have tamper-evidencing portions which interengage when the closure is seated on the neck to prevent removal of the closure with the tamper-evidencing portions intact. A tear tab reinforced with a vertically extending bend is joined to the tamper-evidencing portion of the closure. The neck has at least one notch shaped and positioned to receive the tear tab when a cap is applied to the neck.

Abstract: A blow molded plastic cap is provided, having multi-start external threads, the bottom rim of its body being engagable with multiple internal threads of a blow molded plastic container to effect a seal therewith. The interlocking of the threads compresses together the cap and the container forming a seal therewith provided by the side wall and the top wall of the cap in combination with the side wall and the top flange of the container.

Abstract: For tent-type paperboard containers as well as other containers, a spout fitment is attached surrounding a hole in the container. The fitment spout has internal threads and an external flange which seals around the hole and is fixed to the container by thermal means, adhesive or the like. The cap has a top disk from which an externally threaded skirt depends. The exterior of the skirt has gripping ribs to assist in screwing and unscrewing the cap. The lower edge of the skirt seals against a sealing membrane on the spout. Surrounding the skirt is a tamper-evident band attached to the lower edges of the ribs by frangible bridges. The tamper-evident band has locking means engaging complementary locking means on the fitment. Thus, the cap cannot be unscrewed without removing the tamper-evident band. By unique design, the fitment and cap may be molded in one mold cavity.

Abstract: A child resistant container which describes: (1) a bottle having a neck, the bottle also having a containment area to store tablets accessible through an opening in the neck; (2) a cap having a skirt, the skirt engageable with the neck; and (3) an access device for allowing attachment of the neck with the skirt of the cap, including: (i) a push button associated with the cap; (ii) an irregularity contained on the inside of the cap; and (iii) an alignment device on the neck, engaged with the irregularity on the cap. When the push button is pushed by the user, the irregularity enters the alignment device such that the cap may be translated parallel to the longitudinal axis of the bottle. The skirt and neck respectively engage one another, so that thereafter the cap may be removed from the bottle.

Abstract: A neck finish for a tamper evident bottle is disclosed having at least ten helically spaced threads which extend along a substantial length of the exterior wall of the neck. The neck finish may include one or two annular ring flanges to accept a snap-on cap. Also disclosed are tamper evident caps having at least ten helically spaced threads positioned on the inner surface of the cap. In one embodiment, the cap includes one or two annular ring flanges to engage the ring flanges on the disclosed neck finish. Another tamper evident cap includes ten helically spaced thread which are adapted to engage at least some portion of threads on a neck finish.

Abstract: A plastic container made from a fusion blend of a post consumer plastic and ethylene polymers and comprising post consumer resin of homopolymer high density polyethylene resin and a small amount of linear low density polyethylene resin. In another form, the container is made from a blend of post consumer homopolymer high density polyethylene resin, virgin high density polyethylene resin with a small amount of linear low density polyethylene resin. The physical properties of the container including stress crack resistance are maintained as contrasted to the loss of such physical properties that have been heretofore resulted from the use of post consumer resins.

Abstract: A jar, preferably for a domestic blender, is provided with an external thread at a lower end for engaging with an internally threaded base member. The threads have a varying radial position along the axial length of the threaded area to assist in the assembly of the two parts and to prevent cross threading. In the disclosed embodiment, the jar has a frusto-conically shaped lower portion on which a constant height thread is formed. The base member has a cylindrical wall with a thread having a varying radial height to complement the position of the jar thread.

Abstract: At the top of a bottle the circumferential bead lying between the cap fastening means and the neck is enlarged in diameter to better meet the enlarged diameter of an oversize cap such as a two piece "child-resistant" cap. The undercut below the bead forming the neck is greatly exaggerated. The circumferential bead is located lower on the top to better fit the extended skirt length of the outer cap of the two piece "child-resistant" cap. A circumferential shoulder is added above the bead to substantially match the skirt length and diameter of a standard cap. Regardless of whether a "child-resistant" cap or a standard cap is used, the plastic shrink-fit band tightly fits about the cap and over and underneath the circumferential bead. The loosening of either "child resistant" or standard cap will force the splitting of the band because the shrinkage of the band below the circumferential bead is considerably greater than the innate circumferential elongation of the shrunk plastic band material.

Abstract: The present invention employs a plastic snap-on cap which engages both the neck crown of a container having a rectangular body and a neck having screw threads and is internally threaded to engage the neck threads of the conventional container. A foam gasket under the top of the cap prevents leakage by sealing against the neck lip. The cap has internal threads which snap over and then engage under the neck threads. Vertical "barriers" below the cap threads prevent unscrewing the cap so long as the cap skirt is intact. Score lines extend from the bottom edge of the cap skirt to above the internal cap bead which engages the neck crown and extend up to the cap threads. A tear tab is used to tear a vertical strip of the skirt which extends up between the score lines. The cap is thus tamper-evident since it cannot be removed so long as the cap is intact but can be removed by tearing the aforementioned strip. In one modification, a well is formed in the center of the cap.

Abstract: A removal resistant closure and container assembly is provided. The container defines an opening. The closure is applied to the container to occlude the opening. A first thread is defined by the container and extends at least partially around the opening from a leading end to a trailing end. A second thread is defined by the closure and extends at least partially around the closure form a leading end to a trailing end. A projection is defined adjacent one of the first and second threads. The projection and the one thread define a space between them which is less than the width of the other of the threads. Either the projection or the other thread, or both, are resilient to accommodate deformation during relative rotational movement of the container and closure. When the closure and container are screwed together, the threads are relatively axially displaced from a threadingly engaged condition to a disengaged condition which resists re-engagement.

Abstract: A sealed container includes a base jar for containing a substance and a removable lid therefor. The base jar includes an upper portion with a screw thread and an upper wall extending inwardly and upwardly therefrom having a circular brim which defines a wide mouth opening, a brim portion with at least a 10% reduction, and an inside edge. The removable lid includes an encircling member extending downwardly from a top wall with a mating screw thread for the screw thread of the base jar. For sealing with the base jar, the removable lid also includes a circular projection extending downwardly from the lid which engages and seals with the circular brim. For additional sealing, the removable lid further includes a circular flexible flange extending downwardly from the lid having a tip which is radially flexed relative to a remainder of the flange upon engagement with an upper wall of the jar to seal therewith.

Abstract: A stackable plastic container including a body having a generally rectangular cross section including a base wall, sidewalls and end walls, the width of the sidewalls being greater than the width of the end walls. The body has a top wall with an integral neck defining a dispensing opening. The bottom wall has spaced longitudinally extending integral portions defining a longitudinal recess extending lengthwise of the bottom wall and generally parallel to the sidewall. The top wall of the body includes a centrally located longitudinally extending projection extending upwardly and defining spaced longitudinally extending generally horizontal portions lengthwise of the sidewalls such that when one container is stacked on another, the longitudinally extending portions of the top wall are engaged by the longitudinally extending spaced projections on the bottom wall of a container stacked thereon.

Abstract: A plastic vessel preform includes a neck portion having an outer layer formed by an insert piece (20) which includes a thread portion (22a) and a support ring (28). The support ring (28) includes a bond reinforcing portion (36) integrally formed therein in a direction perpendicular to the axis or the preform body (34). The bond reinforcing portion (36) strengthens the radial bond in the insert piece (20) so that the mechanical strength at the neck portion (32) of the preform (30) can be greatly increased.

Abstract: A blow molded, PET container having a unitarily formed body defining a hollow cavity for receiving a product. The body includes a base, a side wall, a neck finish and a mouth. The neck finish, located at the upper end of the container, is formed from substantially amorphous PET that has been thermally stabilized by a heat treating process. A thread is formed on the neck finish to receive a closure cap. The thread is generally in the form of a raised ridge that spirals at least partially around the neck finish. Spaced interruptions divide the thread into thread segments which reduce the PET needed to form the neck finish. The interruptions reduce the residual stresses in the neck finish and thereby reduce the distortion which occurs in the neck finish during hot filling or hot washing of the container.

Abstract: Tamper indicating, child proof system includes annular tear strip on the cap; and a rotatably indexing latch finger on the cap which engages a raised annular retainer ridge with bypass opening on the neck of the container. A tactile indicator of the rotational location of the bypass opening is under the tear strip for sensing by a finger that is in simultaneous contact with the cap, when the tear strip is removed. A lower ridge includes an index key for orienting the latch finger away from the bypass opening during assembly of the system.