Abstract: A closure device for the neck (1) of a container (2), using a plug (3) having some degree of elasticity, of the type in which closure is obtained by axial snap-engagement, opening being obtained by rotation or unscrewing, the neck (1) and the plug (3) having, on the one hand, a first continuous projection (4) and at least a second localized projection (5), which are adapted to co-operate with one another by axial snap-engagement in order to close the closure device and, on the other hand, a ramp (6) having at least one V-shaped or pseudo-V-shaped profile and at least a third localized projection (7) adapted to co-operate with one another by relative sliding in order to open the closure device by rotation or unscrewing, the first and third projections (4, 7) on the one hand being disposed on the neck (1) and the second projection (5) and the ramp (7) on the other hand being disposed on the plug (3).

Abstract: A vacuum indicating closure for a container for the packaging of a vacuum-packed product, the closure being of two-piece construction and having a metal lid portion which is retained in sealing engagement with the rim of a container by a plastic ring portion. The metal lid portion has a vacuum indicating button centered therein, which vacuum indicating button can flex downwardly from its normal position into the headspace of a container under the influence a sub-atmospheric or negative pressure in the headspace. The ring portion of the closure has a radially inwardly projecting annular flange at the top thereof to urge a peripheral portion of the lid portion of the closure against the rim of the container, the ring portion of the container further having a radially inwardly projecting annular bead to lock the lid portion of the closure against the underside of the annular flange of the ring portion so that the lid portion and the ring portion can be conveniently handled in unison.

Abstract: A closure for a container having generally helical threads on the neck finish is formed from a one-piece cap shell of thermoplastic material including a top wall and a peripheral skirt, the skirt having a plurality of spaced, hard, flexible generally vertical thermoplastic ribs integral with the shell for contacting the threads of the container. Each rib is so constructed and arranged that it has sufficient resistance to cold flow that it only slightly flexes and bends around the thread to form a shallow indentation on the rib when the rib is forced into contact with the thread, the indentation being sufficient to provide purchase on the threads for removing the closure.

Abstract: An all-plastic press-on, twist-off closure for a container having threads in the neck finish is made of a hard plastic shell having a top and a peripheral skirt. A gasket member is provided on the inside of the shell located adjacent the top and the shell skirt. The gasket member has resilient deformable ribs for engaging the threads and the gasket member and the shell skirt are held together against rotation with respect to each other by interlocking spline means on the shell skirt and the gasket member skirt.

Abstract: A closure of the press-on type which includes a shell having therein a liner which functions to both form a seal with a container neck finish and also to form in the closure threads which are complementary to the threads of a container neck finish wherein although the closure is pressed on, it may be removed by rotating the same and further may be reapplied to have the same original tight seal. The closure is particularly identifiable by the properties and dimensions of the liner with the properties including a percent puff range and a hardness and the dimensions including certain critical dimensions as to liner thickness.

Abstract: A closure cap of the press-on type wherein the sealant or gasket is flowable both to interlock the closure cap with threads on the container and to form a seal with the end surface of the container. The configuration of a radially inner part of an annular portion of the sealant has been changed to increase the thickness thereof whereby, when the closure cap is applied, a normal seal is formed with the container end sealing surface and a further seal of the piston-cylinder type is formed between the sealant and the radially inner cylindrical surface of the container. This secondary seal permits an overloading of the closure cap relative to the container due to stacking, but maintains the seal between the closure cap and the container even though the sealant may temporarily move away from the end sealing surface of the container.

Abstract: This relates to glass container neck finishes which are particularly configurated for use solely with PT closures which are provided with liners formed of a suitable compound and wherein the closures are pressed onto the container neck finishes and removed therefrom by a twisting action. The neck finishes are particularly configurated to facilitate the re-engagement of the closures with the neck finishes by twisting actions so as to assure both the interlocking of the closures with the neck finishes and the resealing of the containers.

Abstract: A container closure adapted to be applied to a container having threads by an axial movement and to be removed by a rotary movement to open the container comprising a body including a base wall and a peripheral wall and a gasket of plastic material formed in situ along the peripheral wall and at least a portion of the base wall which is adapted to overlie the end of the container. The surface of an annular portion of the gasket along the peripheral wall is formed with a plurality of circumferentially extending substantially flat surfaces such that it has a polygonal configuration in transverse cross section with axially extending channels at the junctures of the substantially flat surfaces. When the closure is applied to the container, the threads on the container deform the surfaces of the polygonal portion by indentation to define complementary threads therein.

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

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

Abstract: A child-resistant package consists of a container having an open-ended neck and a cap having a top and an annular skirt which telescopes over the container neck. There are co-operating snap-over retainers on the exterior of the neck and the interior of the cap skirt which require the cap to be moved axially a distance greater than the axial over-lap of the retainers in order to remove the cap. The container neck and the cap skirt also have a radially extending lug and a circumferentially extending ramp that are moved into engageable alignment by flexing the cap skirt inwardly. The ramp has a surface which is inclined relative to the axis of the neck and cap skirt and which has an axial height greater than the distance of axial over-lap of the retainers. In order to remove the cap, the skirt is flexed inwardly to align the lug with the ramp surface and the cap is rotated relative to the container neck causing the cap to be moved axially a distance sufficient to disengage the over-lapped retainers.

Abstract: A closure cap for capping a fluid container comprising a top having a substantially annular skirt depending downwardly from the periphery thereof and a resilient interference structure formed on the inner surface of the substantially annular skirt to engage threads formed on the fluid container to form a locking seal therebetween.

Abstract: A childproof safety screw cap and container having yieldable cap retainer means which are overcome, to effect cap removal, by a quarter-turn twist that produces a relatively large axial cap travel due to the provision of multiple screw thread elements thereon. The cap can be pushed straight on, accompanied by bypassing of the threads. The retainer means and the threads increase their interlock action if the cap is squeezed laterally, as by the act of a child applying its teeth to the cap. A shielding flange on the container defeats efforts to bite the cap under its bottom rim, and a bevelled top peripheral portion of the cap defeats its being gripped at the top, by the teeth.

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

Abstract: A container (10) disclosed includes a unitary receptacle (12) and a unitary cover (14) which are each molded from resilient plastic with segmented buttress retainers (24, 32) that cooperate to secure the cover upon a snap action closing movement while permitting opening cover movement by manual rotation. The container has particular utility as a paint pail for holding paint, stain, or the like but is also useful for holding food or other contents. An upper open end on a side wall (16) of the receptacle has a round surface (22) on which circumferentially spaced sets of the buttress retainers (24) are located with horizontal retaining flanks thereof facing downwardly and inclined flanks thereof extending downwardly and radially to the associated retaining flanks.

Abstract: A container (10) disclosed includes a unitary receptacle (12) and a unitary cover (14) which are each molded from resilient plastic with segmented buttress retainers (24, 32) that cooperate to secure the cover upon a snap action closing movement while permitting opening cover movement by manual rotation. The container has particular utility as a paint pail for holding paint, stain, or the like but is also useful for holding food or other contents. An upper open end on a side wall (16) on the receptacle has a round inner surface (23) on which circumferentially spaced sets of the buttress retainers (24) are located with horizontal retaining flanks thereof facing downwardly and inclined flanks thereof extending downwardly and radially in an inward direction to the associated retaining flanks.

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

Abstract: This is a combination pouring spout and closure cap which straddles the same. The closure cap has two annular dependent spaced skirts. The inner of these skirts fits tightly the inner space of the pouring spout and is held in position by coaction of circumferentially spaced helicoidal ridges on the inner face of the outer skirt with an interrupted ridge on the outer face of the pouring spout.

Abstract: A two piece pourer closure, comprising a base portion with a cover portion which on rotation is raised by cooperating protuberances to open a pouring aperture, is provided with a separable guarantee strip, at least partly covering the cover portion to prevent it from being grasped and rotated and with means for centering and supporting a jacket portion of the cover against laterally acting forces. The means for supporting the jacket portion may be the protuberances on the base portion or a ring of guide elements on the base portion engaging the inner surface of the jacket portion.

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

Abstract: A container is provided and comprises a deformable metallic container body adapted to contain a product therein and having a bottom wall and a side wall which has an a tubular upper portion terminating in an open end and a deformable metallic closure for said container body. The closure has a main body portion adjoined at its outer edge by an annular flange with the flange having a roughly U-shaped cross-sectional configuration defined by a bight with an inner leg portion and an outer leg portion extending from opposite ends of the bight; and, the inner leg portion adjoins the main body portion and the outer leg portion is disposed radially outwardly of the open end and terminates therebeneath.

Abstract: A press-on turn-off closure cap for glass containers which have a top rim sealing finish, a contiguous frusto-conical sealing finish, and on the neck therebelow a circumferential band of thread formations. The closure cap has a cup-shaped shell with a top panel and a two-step depending skirt. The shell is lined at the juncture of the top panel and the upper inner step with an annular gasket formed of solid plastisol or the like which provides hermetic sealing engagement with both the top rim finish and also the contiguous frusto-conical side seal finish. In addition the lower step of the shell is lined with a circumferential gasket which after being pushed down over the band of thread formations takes a cold-flow set so as to form mating thread formations capable of camming the closure cap off the container on relative rotation between the cap and container.

Abstract: A bottle or similar container is provided with a safety closure comprising a push-on cap having a sealing plug on its base penetrating into the bottle mouth and having projections on the inside of its peripheral wall which engage behind an annular beading on the bottle neck to retain the cap on the bottle. In addition to the beading, mutually opposite cams project from the bottle neck each providing an upper surface which ascends in a circumferential direction towards the bottle mouth. The peripheral wall of the cap, which is made of a slightly flexible material, is spaced from the bottle neck and at mutually opposite positions on its inside there are inwardly projecting cam followers which clear the cams when the cap is rotated normally but which engage and ride up the upper cam surfaces when the cap is pressed inwards in the regions of the followers and the cap is simultaneously rotated in the same direction as the cam surfaces ascend, thereby pushing the cap off the bottle.

Abstract: A safety screw closure for use with a container having an inner screw cap on to the bottom edge of which an elastically expandable securing ring is attached by at least one rupturable bridge member. An outer cap is mounted on the inner cap and slidable axially between a first position remote from the inner cap and second position. A spring is located between the caps to normally urge the outer cap into the first position. The caps are provided with at least one set of cooperating coupling means which are in cooperation in any axial position of the outer cap when the closure is screwed on to the container whereas they are ineffective when rotating the outer cap in the opposite direction and when the outer cap is ints first position in which it is not depressed against the spring. The outer cap being dimensioned so that when in the first position it extends above the securing ring.