Abstract: An orientationally sensitive closure for mounting to a container in a specific orientation includes a closure body and a flange. A spout portion extends from one side of the flange and an orienting projection extends from a side of the flange opposite of the spout. The flange and spout may be coaxial with on another, with the spout centrally disposed thereon. The projection extends from the flange in a non-coaxial relation to the spout and flange. An apparatus for orienting the closure prior to mounting to a container includes a body defming inlet and outlet regions extending along a longitudinal axis of the body. Flange and projection receiving channels extend between the inlet and outlet regions. The flange channel defines a substantially straight-through path through the apparatus, along the longitudinal axis. The projection channel defines a path having at least two bends therein defming a portion generally transverse to the longitudinal axis.

Abstract: A closure and container combination having an anti-splash up element is provided. The container includes an annular projection about the neck of the container at a point below the closure-engagements and within the closure skirt, when the closure is engaged. The placement of the annular projection stops the splashing up of liquid and solid adulterating materials from reaching the mouth of the container and either the liner on the mouth of the container or the actual product within the container. The annular projection of the present invention protects the product from splash up occurring after container capping, during hot fill cooling and washing, during transportation and storage and while in use by the consumer.

Abstract: A molded closure having an auxiliary thread for removal of an incomplete closure from a molding cavity, the molded closure including a helical auxiliary thread projecting inwardly from a cylindrical wall portion of the closure to provide engagement between the closure and the molding core, so that the closure may be threadably removed from the molding cavity by threadably disengaging the molding core from the molding cavity after an incomplete run of the fabrication process. A molding assembly with which the auxiliary thread may be formed in a molded closure is also provided.

Abstract: In a screw thread arrangement for the angular positioning, in the circumferential direction, of a first component having a multiple-thread pattern screw thread relative to a second component having a complementary multiple-thread screw thread pattern, in particular for a threaded closure cap relative to a container member, wherein a first angular spacing of adjacent runouts when viewed in a circumferential direction differs from angular spacing of adjacent runouts . As an alternative the dimensions of at least one thread turn of each multiple-thread screw thread pattern is different from those of a second thread turn. By such measures, when configurations of the components are rotationally asymmetrical, the two parts are always positively brought into alignment when the one component has been firmly screwed onto the other.

Abstract: A closure structure which includes a container neck having an external thread to be engaged by an internal thread of a closure body for drawing the closure body tightly down onto the container neck. The external thread of the container neck includes a pad on a bottom thread turn. A sealing element of the closure body is drawn downwardly onto a sealing surface of the container neck to effect a seal. The pad is sized to have a depth which causes the internal thread of the closure body to be drawn downwardly during the final portion of the screwing-on of the closure body to the container neck. The presence of the pad reduces axial clearance between the external thread of the container neck and the internal thread of the closure body to prevent axial displacement of the closure body from the container neck to prevent leakage due to the sealing element of the closure body being axially displaced from the sealing surface of the container neck.

Abstract: A closure includes a plurality of decorative display elements arranged at regular intervals around an outside surface of the closure, the decorative display elements, and gaps between the display elements, serving as engagement locations for a chuck to rotate the closure. According to one aspect of the invention, the display elements are peaked upwardly from an open bottom end of the closure, having wider base ends than distal ends, and the gap formed between the elements is tapered in a downward direction. In one embodiment, the display elements are stepped in profile having different levels of raised planes providing a three dimensional decorative display. The regularly spaced decorative elements also provide an enhanced gripping surface for the fingers of a consumer.

Abstract: A beverage container cap body adapted to make it difficult to be easily unscrewed even though carbonated beverage is contained in a beverage container but make it easy to be smoothly opened even though there is a pressure from inside the beverage container, whereby packings are easily cleaned and the cap body can be equipped upright relative to the container, wherein the cap body comprises a cylindrical body, being releasably and threadably disposed to an inner circumferential wall of opening at a container body, and an upper area thereof protruding above the opening, a lower packing and an upper packing each tightly abutting on a lower side and an upper side of the inner circumferential wall of opening, a cut-out portion 9h formed at an upper wall of an insertion groove, of the lower packing and a lid body releasably and threadably disposed at an upper side of the cylindrical body, wherein an opening is formed at part of a ceiling wall of the lid body while a seal member is disposed at an inner side of the c

Abstract: A closure system for molded plastic containers having a threaded container neck, the closure system comprising a screw cap having internal threading constructed for threaded engagement with the threaded container neck, a gasket, means for retaining the gasket on the screw cap and an abutment surface integrally formed in and extending substantially radially from the container neck for sealably contacting the gasket, wherein the screw cap and the abutment surface are constructed so that downward axial rotation of the screw cap is effective to seal the gasket against the abutment surface.

Abstract: A container (1) having an open-ended and externally screw threaded cylindrical neck (4) is fitted with a closure cap (2) having an internal screw thread (10) adapted to cooperate with the thread (7) on the container neck and a planar end wall (8) adapted to form a seal with the open end (6) of the container neck. At least one of the opposing surfaces of the screw threads on the cap and the container neck is sufficiently inclined to the plane perpendicular to the axis of the neck of the container at an angle of at least 60° so that the screw threads can slip laterally on one another to enable the side wall of the cap or the neck of the container to deform when the cap is tightened onto the container to form a seal.

Abstract: A closure has a first screw thread (11) capable of cooperating with a second screw thread formed by a container intended to receive the closure. An elastically deformed part (28, 31) is capable, when the first (11) and second screw threads are engaged, of keeping the closure bearing elastically on the container in at least one direction oriented radially with respect to the closure, so as to improve the holding and working of the closure on the container.

Abstract: A bottle closure assembly for providing access to the fluids within a bottle without the complete removal of the closure. The bottle closure apparatus comprising a cap and a sleeve connected by a hinge. Both the cap and the sleeve containing internal threads for twisting the closure apparatus onto a threaded bottle opening. The closure sealing the container when fully threaded on to the threaded opening, while providing access to the fluid therein when only partially threaded (sleeve only) by allowing the cap to pivot about the hinge. In addition, position nubs may be provided along the threads to resistively indicate when the cap is pivotable.

Abstract: A closure for use on a container having an externally threaded neck is disclosed wherein an inner surface of a downwardly depending skirt portion of the closure cap includes a helical thread having a flat upper surface with a lower thread profile having a first depth greater than an upper thread profile of a second depth. The helical thread of the closure tapers into the sidewall of the closure skirt. The closure is provided with a seal integral with the inner surface of the skirt, spaced from a top wall of the closure, and retained at a lowermost point along the downwardly depending skirt by a bead.

Abstract: A unitary plastic open head drum includes a cylindrical sidewall closed at a bottom end with a bottom wall and open at an upper end. A cylindrical chime is integrally formed with the sidewall at the open end. The chime comprises an annular wall having a thread extending helically about the annular wall. The thread has a depth of approximately ⅜ inch. The threaded drum cover is removably receivable on the cylindrical chime.

Abstract: A bottle/cap assembly with sweep-and-drain action includes a bottle, a cap and a sweep-and-drain mechanism. The bottle has in series, from the bottom to the top, a closed bottom, a body sidewall, a cylindrical neck sidewall, and an open top. The cap is configured and dimensioned to be rotatably received about the neck sidewall and includes a closed cap top to close the open top and prevent egress of liquid from within the bottle. The sweep-and-drain mechanism includes (i) a circumferentially spaced plurality of vertically extending grooves or slots in the bottle extending downwardly from the open top through said neck sidewall, and (ii) a circumferentially spaced plurality of radially extending vanes or wipers projecting downwardly from the closed cap top towards the open top.

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. The cap is characterized in that it has a closure plane, a circumferential outer skirt for engaging a container, and a circumferential resilient depending inner member.

Abstract: The present invention is directed to a one-piece dosing cap comprising a top wall, side walls defining the top portion of a dosing compartment, and an attaching skirt extending from the base of the side walls, said skirt comprising substantially vertical walls and a stopping portion, characterized in that said dosing cap comprises at least one undercut portion. Preferably, the one-piece dosing cap of the present invention is manufactured by a one-step injection molding process. Also preferably, said cap comprises attachment means for securing, more preferably releasably securing said cap onto the neck of a container. More preferably, said attachment means are achieved by screw threads, which match cooperating screw threads of the container.

Abstract: A bottle closure assembly for providing access to the fluids within a bottle without the complete removal of the closure. The bottle closure apparatus comprising a cap and a sleeve connected by a hinge. Both the cap and the sleeve containing internal threads for twisting the closure apparatus onto a threaded bottle opening. The closure sealing the container when fully threaded on to the threaded opening, while providing access to the fluid therein when only partially threaded (sleeve only) by allowing the cap to pivot about the hinge. In addition, position nubs may be provided along the threads to resistively indicate when the cap is pivotable.

Abstract: The invention concerns a seal for closing the neck of a flask. The seal comprises a stopper with a central coaxial channel for passage of an injection and/or sampling needle, this channel being sealed by at least one ball with a diameter slightly greater than that of the channel. This seal is suitable for a reagent flask used by a blood analyzer.

Abstract: An improved, easy opening, screw-cap for threaded opening type containers is disclosed, consisting of a plastic or metal cap of generally cylindrical shape. Located along the upper section of the cap's outer circumferential surface are three, equally spaced, grasping protrusions, that extend radially outward from the radial center of the cap, so as to form a cap of a generally rounded, triangular configuration as seen from above. These grasping protrusions provide torsional, mechanical interference for the hand and it applies rotational force to screw on or off the cap. A series of vertically extending, gripping ribs, are equally spaced along the outer circumferential surface of the upper section of the cap, and are designed to make it easier to screw the cap on and off the neck of a conventional container, such as a bottle. Conventional internal screw threads are used on the internal cavity of the cap to attach the cap to the neck of a conventional container, such as a bottle.

Abstract: An apparatus for retrofitting the opening of the neck of a bottle with a screw closure. An insert is provided that is configured to be positioned within the neck of the bottle for receiving the external threads of the lower end of a screw closure which is inserted into the opening of the bottle and rotated for securement therein. In one embodiment the insert may be secured in the neck by an adhesive. The positioning of the threads in the lower portion of the neck of the bottle affords a smooth and consistent pour of the wine from the bottle.

Abstract: A bottle cap is provided that allows for venting of gases generated in a bottle. A single or multiple ridges are formed on the inner surface of the cap top such that the ridges sit on the bottle mouth rim when the cap is threaded onto the bottle. A single or multiple slots may be formed across each of the ridges. Alternatively, a single or multiple grooves may be formed on the inner surface of the cap top. The ridge(s) or groove(s) may also be formed on a disc fitted over the inner surface of the cap top. When the cap is threaded on to the bottle, gases generated in the bottle can escape through the slot(s) formed across the ridge(s) or through the groove(s) formed on the inner surface of the cap top. A liner having an opening formed through its thickness may be placed in the cap. The liner opening allows the passage of gases from the bottle to the slot(s) or groove(s) formed on the cap top or disc.

Abstract: A molded closure for use with a container includes a top wall defining a generally planar inner surface and a skirt depending from the top wall generally perpendicular thereto. The skirt includes a container engaging member formed therein. The closure includes a retaining projection formed in the top wall contiguous with the inner surface and extending therefrom inwardly of the closure. The projection extends from the surface perpendicular thereto and defines at least a pair of mold binding surfaces perpendicular to the top wall surface. The binding surfaces are formed in facing relation to one another. The closure is formed in a heated state, and as the closure cools, at least the binding surfaces exert a binding force on the mold block at a location forming a part of the projection to momentarily retain the closure bound to the molding apparatus.

Abstract: A convertible cup, connectable to a vacuum bottle, is provided including a dome-shaped cover part and a cup-shaped vessel part. The dome-shaped cover part has first threads, a first opening for the dispensing of liquids, and a second opening for the intake of air. A cup-shaped vessel part has second threads suitable for connection to the first threads. When the second threads are connected to the first threads, the cup-shaped vessel part may be nested inside the dome-shaped cover part thereby forming a cup with an open top. The cup-shaped vessel part also has third threads suitable for connecting to the first threads. When the third threads are connected to the first threads, the cup-shaped vessel part and the dome-shaped cover part form a chamber. The convertible cup may also include fourth threads on the dome-shaped vessel part for connecting to a vacuum bottle.

Abstract: There is disclosed a push-on closure-container assembly wherein a neck finish for a blow molded container of multiple external threads cooperates in a push-on operation with multiple internal threads of a closure wherein the number of leads of like pitch of the multiple-external threads of the neck finish in less than the number of leads of like pitch of the multiple internal threads of the closure and wherein the threads of the neck finish of the container are thicker than the threads of the closure.

Abstract: A method and apparatus for delivering an aroma when a bottle is opened is provided. An aromatic substance is placed on the bottle neck and/or the cap, and the aroma is released when the cap is removed from the bottle. A preferred embodiment uses a scratch-and-sniff material to contain the aroma. The material is scratched when the cap is removed, releasing the aroma.

Abstract: A storage container for containing liquids that harden, that comprises a threaded surface and a closure having threading complimentary to the threads of the storage container, wherein the threads of the threaded surface are coated with a non-stick coating to prevent the liquid from hardening on the threads of the container and bonding the closure with to the container.

Abstract: A plastic closure has a gas impermeable barrier member co-extruded with and substantially fully embedded within the cap so that the barrier member is mechanically captured within the molded cap. The substantially fully embedded barrier member extends at least across the end wall and can also extend circumferentially within and at least partially axially down the skirt from the end wall.

Abstract: A container and closure assembly, affording a simple, quick, ergonomical, and reliable closing operation, provides an intermediate, partly open position that is reliably indicated. The distance of rotation of the closure relative to the container necessary for closing the closure is short, so that quick and simple closing of the container is provided. The closure is mounted to the container by a projection that is cooperatively received in a track. Either the closure or the container may be provided with the projection, the other being provided with the track. In a preferred embodiment, the track includes a protuberance that hinders the movement of the projection past a predetermined position along the track.

Abstract: A closure is provided with a thread configuration adapted for snap-on or screw-on application to a container neck finish. Preferably the closure and neck finish contain eight or nine mating continuous or discontinuous threads for this purpose. The present invention preferably provides at least one annular sealing bead depending from the outer surface of the closure valve which are compressed against the inner surface of the container neck to form a seal as the closure is snapped onto the container neck. Optionally, sealing engagement between the closure and the mating portions of the exterior wall of the container neck may be further improved by including one or more annular sealing beads on the interior surface of the closure depending annular skirt.

Abstract: For improving the venting behavior of containers with beverages containing carbon dioxide, a container finish (1) and a closure (11) is provided with a twin-start thread. The thread comprises in each case two threads (3, 13) which extend over an angle of 240.degree. to less than 360.degree., preferably 280.degree., and which are arranged so as to be displaced at 180.degree.. In this way, initial or first sections (5), in which the threads (3) overlap each other vertically, are formed on the outside surface (2) of the container finish (1), as well as second sections (6) in which, vertically, only one thread (3) is arranged. On the inside surface (12) of the closure (11), initial or first sections (15) are formed in which the threads (13) overlap each other vertically, as well as second sections (16) in which, vertically, only one thread (13) is arranged. In each of the sections (5, 6, 15, 16), at least one venting recess (4, 14) is arranged per thread, said venting recess interrupting the threads (3, 13).

Abstract: A coating container comprises a flexible container body made of plastics and capable of being depressed, an intermediate plug having a through hole, an inner cap, a coating attachment made of a felt, having a through hole, and held over the inner cap, and an outer cap having a sealing cylinder. The intermediate plug is fitted in an opening of a neck portion of the container body. The outer cap is fitted over the inner cap. The inner cap has a top plate with a through hole at a center area. An outlet cylinder having a blocked upper surface and outlet hole at a side wall is provided over the through hole. A sealing cylinder is provided outside the outlet cylinder. A circumferential wall is provided along an outer edge of the top plate. The outer cap is comprised of a circumferential wall, a top plate, and a sealing cylinder inserted into the through hole in the coating attachment and having a sealing plate at a lower side.

Abstract: Molding compositions are based on polymers of ethylene made from(A) from 40 to 65% by weight of an ethylene polymer having a density in the range from 0.948 to 0.964 g/cm.sup.3, a melt flow index (MFI) of from 6 to 20 g/10 min and a mean molar mass distribution M.sub.w /M.sub.n in the range from 2 to 5,(B) from 35 to 60% by weight of an ethylene polymer having a density in the range from 0.935 to 0.953 g/cm.sup.3, a melt flow index (MFI) of from 0.1 to 0.35 g/10 min and a mean molar mass distribution M.sub.w /M.sub.n in the range from 6 to 20, and(C) from 0 to 6% by weight of the usual additives for thermoplastics,where the density of the molding compositions is in the range from 0.948 to 0.957 g/cm.sup.3, the melt flow index is in the range from 1.0 to 2.0 g/10 min, the mean molar mass distribution M.sub.w /M.sub.n is in the range from 3 to 10 and the difference of the densities of components A and B (.DELTA.D=D.sub.(A) -D.sub.(B)) is in the range from 0 to 0.029 g/cm.sup.3.

Abstract: A tamper-evidencing, snap-on, screw-off closure is used with a specially shaped container neck. The neck has a neck stretch with multiple neck threads and a locking wall below the neck stretch with a plurality of external teeth. The closure has an upper skirt with multiple closure threads which mate with the neck threads and a tamper-evidencing band with a plurality of internal teeth shaped and positioned to engage the external teeth. The teeth are shaped to guide the teeth into side-by-side interengage during axial application of the cap to the neck.

Abstract: A container neck is used with a tamper-evident, snap-on, screw-off closure. The neck has a multiple of four first helical threads on a neck stretch portion, and at least one external ratchet tooth on a locking wall portion below the neck stretch. The closure has an upper skirt having second helical threads mating with the first helical thread of the neck and a lower skirt with at least one internal ratchet tooth shaped and positioned to engage the external ratchet tooth when the closure is applied to the neck. The teeth formed on the skirt interior and neck exterior are arranged to provide at least one circumferentially extending stretch of the tamper-evident band where the teeth are not engaged. A line of weakness extending vertically through the disengaged stretch of the tamper-evident band is ruptured when the closure is unscrewed from the neck. The number of helical threads is preferably eight and, in any event, a multiple of four.

Abstract: A tamper-indicating closure is used with an associated container having a finish having an external thread formation thereon, and an annular locking ring located axially under the thread formation. The closure includes a closure cap having a circular top wall portion defining an outermost edge and a top wall extension region. The closure cap includes an annular skirt portion depending from the top wall portion inwardly of the outermost edge. An internal thread is formed in the skirt and defines a skirt wall plane. The closure includes a plurality of ribs extending from the top wall extension region to define an enlarged grasping region to comfortably fit a user's hand. An annular tamper-indicating band depends from the cap and is detachably connected to the cap by a plurality of circumferentially spaced, frangible connectors extending between the band and at least some of the ribs. The band includes an internal surface configured for engaging the locking ring and separates the band from the skirt portion.

Abstract: A bottle closure assembly for providing access to the fluids within a bottle without the complete removal of the closure. The bottle closure apparatus comprising a cap and a sleeve connected by a hinge. Both the cap and the sleeve containing internal threads for twisting the closure apparatus onto a threaded bottle opening. The closure sealing the container when fully threaded on to the threaded opening, while providing access to the fluid therein when only partially threaded (sleeve only) by allowing the cap to pivot about the hinge. In addition, position nubs may be provided along the threads to resistively indicate when the cap is pivotable.

Abstract: A threaded tabbed cap for being threadably interfaced with a container, particularly a plastic beverage container, wherein the tabs admit unidirectional assistance to a user in the direction of unthreading. A top wall is integrally formed with annular sidewall. At the interior side of the annular sidewall, threads are provided which have a predetermined structure to threadably engage the threads adjacent the opening of a predetermined container. A pair of tabs are integral with the exterior side of the annular sidewall and are located at opposing sides thereof. The tabs are of an asymmetric shape so as to provide aid to unthreading it from the container but not offer aid to threading it onto the container. In this regard, each tab has a forward face projecting radially from the exterior side of the annular sidewall and a rearward face tangential with an interface of the annular sidewall.

Abstract: A sealed container includes a base jar for containing a substance and a removable lid for closing and sealing the base jar. The base jar includes a bottom wall, a side enclosure extending upwardly from the bottom wall having an upper portion with a screw thread, and an upper wall extending inwardly and upwardly from the upper portion of the side enclosure having a circular brim which defines a wide mouth opening for the base jar. The removable lid includes a top wall and an encircling member extending downwardly therefrom with a screw thread which matingly engages with the screw thread of the upper wall 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.

Abstract: A closure cap (10) including a tamper-indicating band (18) with an inwardly and upwardly turned retaining rim (24) having alternately positioned flutes, such as pleats (28) and arcuate portions (30). The pleats (28) are pleated radially outwardly of arcuate portions (30).

Abstract: A vented closure is provided in which a PTFE membrane layer comprises a vent for releasing accumulated gas pressure. The membrane is carried on a structural support which may vary from a fabric type backing to a porous plastic stem, the support permitting a variety of improved vent architecture to be utilized including vents with reduced material requirements, improved geometry, and better handling characteristics.

Abstract: Tamper indicating closure and container assembly which prior opening of the assembly is indicated by exposing projections formed integrally with the closure with such projections remaining concealed in the originally closed position of the assembly. The tamper indicating features are associated with a pouring spout on a gable-top container.

Abstract: In the case of over-tightening of the closure-cap on a beverage bottle (through turning in the wrong direction) there is the risk that, due to the high internal pressure, not only will the thread jump, but also that the cap will be ejected directly from the container. In order to avoid this risk, the invention proposes a screwable closure-cap with security against over-tightening. This cap possesses a ramp element (3) on the end of the thread oriented towards the cap-base, said ramp element being able to engage with the thread-start of the container mouth in the case of over-tightening of the closure-cap. As a result, the cap-wall in the area of the ramp element will be forced outwards in the case of over-tightening so that jumping of the thread in this region will be facilitated. In this way, jumping of the thread on one side only--on the ramp element side--will be achieved when over-tightening is continued, so that ejection of the closure-cap will not be possible.

Abstract: A closure for use with an associated container having a finish with an external securing member formed thereon, includes a closure cap having an enlarged top wall portion defining an outermost edge and an annular skirt portion depending from the top wall portion inwardly of the outermost edge. The skirt portion has an outer wall and an inner wall having an internal securing member engageable with the container external securing member. The closure cap includes a plurality of parallel, spaced apart, tapered ribs. At least some of the ribs extend between the top wall portion and the skirt outer wall. Each rib defines an outer edge and tapers inwardly or thins from the closure cap to the outer edge to define a region adjacent to a juncture of each rib and the closure cap having a cross-sectional area that is greater than a cross-sectional area at the outer edge of each respective rib. The ribs can taper in one or more directions. The ribs are separated from one another by parallel recessed regions.

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: The invention relates to a container neck (10) and closure (12), particularly useful for foil-sealed containers. The neck (10) and closure (12) include complementary threads (14, 16) or projections and complementary tapered surfaces (18, 20) which are adapted to form an interference fit and seal the closure (12) to the neck (10) at a region clear from the lip (30) of the neck (10) and the crown (120) of the closure (12). Any foil seal (28) present on the container neck (10) remains free from contact with the closure (12) during application and tightening. Preferably the neck (10) includes a recessed lip (30, 32) further to protect the seal and to inhibit drop formation. An outer edge of the container lip may be chamfered to provide a pull tab on the foil seal. Additionally, the foil may be of a larger diameter than the lip of the container, so that it provides an overhanging edge of foil to facilitate the removal of the foil, but not of such a large diameter that it touches the inner surface of the closure.

Abstract: A combination of a cylindrical container and a closure for containing products in paste form. The closure device has a bottom (3) and an essentially cylindrical wall (4) that joins and extends out from the bottom. The closure has at least two radially inwardly directed ridges (5), which extend helically essentially from the bottom (3) to the free edge of the wall (4). Scale markings on the closure measure a portion of the product in the closure when the closure is partially opened and the container is vertical and sits on 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 container neck (14) and a container closure comprises a first thread (15) on one of the neck and the closure, a complementary second thread on the other of the neck and the closure such that the closure is moveable from fully disengaged from the neck to fully closed by turning the closure relative to the neck by less than 360.degree., at least one stop formation (17,18) carried by said one of the neck (14) and the closure, and stop means on said other of the neck and the closure engageable with the stop formation or at least one of the stop formations to hold the closure in a closed position on the neck.

Abstract: A tamper-evident, snap-on, screw-off closure is used with a specially shaped container neck. The neck has at least one first helical thread on an upper neck stretch portion, and a first tamper-evident structure having a first locking member. The closure has an upper skirt having at least one second helical thread mating with the first helical thread of the neck. The closure includes a second tamper-evident structure having a second locking member shaped and positioned to engage the first locking member when the closure is applied to the neck.

Abstract: A protective cap assembly for protecting and sealing a tubing used in the field of peritoneal dialysis, includes a plug that is closely fitted in one end of a tubing, and a protective cap which has first connection means for allowing a permanent attachment of the protective cap to the plug, and second connection means for allowing a detachable securement of the protective cap to the tubing.