Abstract: A plastic screw closure for bottles comprising a cap having a substantially cylindrical peripheral portion (1) with an internal screw thread (8) for screwing onto an external screw thread (11) of a bottleneck (10), and with a disc-like top plate portion (2). A substantially cylindrical sealing strip (4) which extends axially from the inside of the top plate portion (2) has an outside diameter at least equal to the bottleneck's outside diameter (D) and an inside diameter (2r2) smaller than the bottleneck's outside diameter (D). Inside the cylindrical sealing strip (4), a further, substantially cylindrical sealing olive-shaped button (3) is radially fitted, the outside diameter (2R1) of which, at least in the area near the top plate and opposite the sealing plate (4), is larger than the inside diameter (d) of the bottleneck (10).

Abstract: A closure for a container is provided with a tamper indicating band attached to a lower terminating end of a skirt wherein the tamper indicating band is provided with an outer surface of varying diameters from the attaching point of the tamper indicating band to the skirt and the lower terminating end of the tamper indicating band. A plurality of folding fingers are hingedly connected to the retaining band terminating end and the thicknesses of the folding fingers increase from the connection of the folding fingers to the lower retaining end to a preselected position of the folding fingers.

Abstract: Sealing cap for closing screw top receptacles includes a metal cap having inner and outer surfaces, a threaded insert formed of a plastic material disposed within the metal cap and rigidly fixed to the inner surface thereof, and a coating bonded to at least a portion of the inner surface of the metal cap. The coating contains plastic material in a divided state and is heat sealed to the insert.

Abstract: A container including a neck and an opening, in combination with a tamper-evidencing closure including a top, a depending annular skirt and a tamper-evidencing band frangibly connected to the annular skirt. The container includes a locking surface on the neck spaced from the opening. The tamper-evidencing band includes an inwardly turned retaining rim that extends at least partially upwardly. The retaining rim has a free edge for engagement with the locking surface as the closure is removed from the neck. The retaining rim includes a locking surface engaging structure, most preferably provided by a plurality of outwardly directed flutes spaced circumferentially thereon and a second securing structure located on the retaining rim between the flutes. Drain passageways are provided in the rim to enable draining and/or evaporation of trapped liquid.

Abstract: A tamper-indicating closure of integrally molded plastic construction that includes a base wall having a peripheral skirt with internal threads for engaging external threads on a container finish. A tamper-indicating band is connected to the edge of the skirt by a plurality of circumferentially spaced integral frangible bridges. A stop flange extends axially outwardly and radially inwardly from an edge of the band remote from the skirt for inversion and engagement with a bead on the container finish. The stop flange is in the form of a circumferentially continuous base of uniform thickness circumferentially of the band, and either uniform or increasing thickness radially and axially of the band. A plurality of circumferentially spaced lugs are integral with and extend from the base. The lugs widen uniformly from zero thickness at the band to a maximum thickness at the free edge of the flange.

Abstract: A safety closure and a container is comprised of a container having an externally threaded neck portion and a first locking bead spaced downwardly from the threaded neck portion and a closure having a cap portion and a tamper indicating band portion. The cap portion is provided with a top wall and a side wall which extends downwardly from an outer periphery of the top wall and terminates in a lower end. The side wall is provided with an internal thread which is engageable with the externally threaded neck portion of the closure. The tamper indicating band portion is attached to the lower end of the cap portion with a plurality of frangible bridge segments. The tamper indicating band portion is also provided with an inwardly projecting second bead which is engageable with the first beads whereby the engagement of the bead prevents removal of the tamper indicating band portion upon removal of the cap portion. At least one ramp is integrally formed with the second bead and projects downwardly therefrom.

Abstract: A tamper evident closure for containers having finish a with thread means and a radially outwardly circumferentially extending bead below the threads comprising, a cap portion of cup-like form having internal threads for cooperatively engaging the threads on a container to apply and remove the cap portion, a retainer ring depending from the lower edge of the skirt portion of the cap and connected thereto by a series of circumferentially spaced bridge connections, and a tamper evident band having means for rotatably mount on the retaining ring and rotatable thereto and including a series of spring fingers for engaging under the retainer bead on the container when the closure is fully seated.

Abstract: A tamper-indicating closure of integrally molded plastic construction that includes a base wall having a peripheral skirt with internal threads for engaging external threads on a container finish. A tamper-indicating band is connected to the edge of the skirt by a plurality of circumferentially spaced integral frangible bridges. A stop flange extends axially outwardly and radially inwardly from an edge of the band remote from the skirt for inversion and engagement with a bead on the container finish. The stop flange is in the form of a circumferentially continuous base of uniform thickness circumferentially of the band, and either uniform or increasing thickness radially and axially of the band. A plurality of circumferentially spaced lugs are integral with and extend from the base. The lugs widen uniformly from zero thickness at the band to a maximum thickness at the free edge of the flange.

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 tamper indicating closure according to the present invention includes a top wall and a skirt depending from the top wall. A tamper indicating band is connected to the skirt along a frangible line. The tamper indicating band includes a ring and at least one tab, the at least one tab having a bi-stable geometric shape. In particular, the tab includes a pair of extending members angled toward one another and connected by a transverse member. The shape of the tab allows it to be molded in a downward orientation and later folded to a stable, upward orientation without reheating or otherwise resetting the tab.

Abstract: A container including a neck and an opening, in combination with a tamper-evidencing closure including a top, a depending annular skirt and a tamper-evidencing band frangibly connected to the annular skirt. The container includes a first securing structure on the neck spaced from the opening. The tamper-evidencing band includes an inwardly turned retaining rim that extends at least partially upwardly. The retaining rim has a free edge for engagement with the locking surface as the closure is removed from the neck. The retaining rim includes a plurality of outwardly directed flutes spaced circumferentially thereon and a second securing structure located on the retaining rim between the flutes.

Abstract: A container closer (10) particularly for use on screw top containers such as carbonated beverage containers, the container closure (10) having a generally cylindrical continuous tamper evident band (11) joined by a plurality of frangible bridges (13) to the free edge of a skirt (16) of the closure (10). The band (11) has a segmented internal rib (18) which engages an external retaining flange of the container when the closure (10) is applied to the container so that on removal of the closure (10) the tamper evident band (11) remains on the container or is visually clearly damaged by removal of the closure (10) from the container. The band (11) is provided with longitudinal reinforcement by projections (25 and 28) or other areas of thickening (26) to provide the band (11) with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: A method for manufacturing a tamper-indicating closure having a plurality of resilient flexible projections bent upwardly and radially inwardly at a predetermined radius of curvature. The first step in the method includes providing a mold assembly comprising a female mold portion for forming the outer surface of the closure and a male mold portion for forming the closure's inner surface and its plurality of projections. The male and female mold portions are arranged for relative movement toward and away from each other between a mold open position and a mold closed position. When in the mold closed position, the male and female mold portions define a mold cavity in which the tamper-indicating closure is molded.

Abstract: A method for manufacturing a tamper-indicating closure having a plurality of resilient flexible projections bent upwardly and radially inwardly at a predetermined radius of curvature. The first step in the method includes providing a mold assembly comprising a female mold portion for forming the outer surface of the closure and a male mold portion for forming the closure's inner surface and its plurality of projections. The male and female mold portions are arranged for relative movement toward and away from each other between a mold open position and a mold closed position. When in the mold closed position, the male and female mold portions define a mold cavity in which the tamper-indicating closure is molded.

Abstract: The problem to be solved by the invention consists in the provision of a one-piece plastic enclosure, in particular made of PE-material, which can be placed on a filled container without satisfying particular tolerance requirements while simultaneously satisfying the additional, in part contradictory requirements, namely, to be manufactured in a few steps and to be apt for recycling after use, while ensuring reliably the guarantee function and the sealing function, for the closed container. The solution consists in a closure cap which has an extended guarantee band and an extended inner seal, i.e.

Abstract: A closure for connection to a container with a threaded neck portion includes an upper wall with a lower surface and a skirt formed integrally with and extending generally downwardly from the upper wall. An internal helical thread is formed on an inner surface of the skirt for engaging the threaded neck portion to thereby secure the closure to the container. An inner annular seal extends generally axially downwardly from the upper wall to sealingly engage an inner surface of the neck portion. The inner annular seal has an inner seal apex area and a downwardly sloped surface extending generally downwardly and away from the upper wall to the inner seal apex area. A gas barrier seal has an annular sealing bead positioned between the inner seal apex area and the upper wall inner surface for sealingly engaging the inner surface of the neck portion. The downwardly sloped surface of the inner annular seal holds the annular sealing bead at least adjacent the lower surface of the upper wall.

Abstract: A tamper evident closure for use on a container has a closure overcap shaped to fit onto a dispensing cap, the dispensing cap being shaped to fit onto the container. The closure overcap is connected to a tamper evident band by fragmentable webs, and the tamper evident band attaches to the dispensing cap, as described below, so that removal of the closure overcap requires the fragmentable webs to be broken, thus providing evidence of the access. The fragmentable webs are strong enough so that it is only easy to break the fragmentable webs one at a time. The dispensing cap includes an upwardly extending cam that functions to break the fragmentable webs one at a time when the closure overcap is twisted with respect to the dispensing cap.

Abstract: This mold is intended to form a cap (1) having a cylindrical skirt (3), this skirt being provided with at least one screw thread (4), a top (2) and a tamperproof ring (6) linked to the free end of the skirt by breakable linking elements. It has a movable pat or mold top (20), a stripping part or stripper ring (21) and a core (22. The stripper ring (21) has, on the side facing the top of the mold (20, on the lower edge of the skirt and in at least two separate places, at least one notch and/or at least one projection so as to create a mortise-and-tenon linkage between the skirt (3) and the stripper ring (21) during molding and demolding of the cap(1).

Abstract: A plastic screw closure for bottles comprising a cap having a substantially cylindrical peripheral portion (1) with an internal screw thread (8) for screwing onto an external screw thread (11) of a bottle neck (10), and with a disc-like top plate portion (2). A substantially cylindrical sealing strip (4) which extends axially from the inside of the top plate portion (2) has an outside diameter at least equal to the bottle neck's outside diameter (D) and an inside diameter (2r2) smaller than the bottle neck's outside diameter (D). Inside the cylindrical sealing strip (4), a further, substantially cylindrical sealing olive-shaped button (3) is radially fitted, the outside diameter (2R1) of which, at least in the area near the top plate and opposite the sealing strip (4), is larger than the inside diameter (d) of the bottle neck (10).

Abstract: A molded tamper-indicating closure for use with an associated container having a finish with an external thread formation and an annular locking collar located axially under the thread formation is disclosed. The locking collar has a circumference, the locking collar defining a locking collar cylindrical plane having a locking collar radius perpendicular to the circumference of the closure. The closure has a cap having a circular top wall portion and an annular skirt portion depending from said top wall portion, said skirt portion having an internal thread formed therein for engaging the container thread. The closure also has a plurality of frangible bridges depending from the skirt portion of the cap.

Abstract: A container closer (10) particularly for use on screw top containers such as carbonated beverage containers, the container closure (10) having a generally cylindrical continuous tamper evident band (11) joined by a plurality of frangible bridges (13) to the free edge of a skirt (16) of the closure (10). The band (11) has a segmented internal rib (18) which engages an external retaining flange of the container when the closure (10) is applied to the container so that on removal of the closure (10) the tamper evident band (11) remains on the container or is visually clearly damaged by removal of the closure (10) from the container. The band (11) is provided with longitudinal reinforcement by projections (25 and 28) or other areas of thickening (26) to provide the band (11) with longitudinal stiffness while still permitting it to expand over the retaining flange on the container.

Abstract: An improved threadedly engageable container closure having a frangibly interconnected tamper-indicating ring, in which the tamper-indicating ring includes a relatively thin upper portion and a relatively thicker lower portion defining a circular recess of rectangular configuration. The tabs are interconnected to an inner upper edge of the lower portion of the tamper-indicating ring by an area of cross section sufficiently thin as to impart elastic memory between the lower portion of the tamper-indicating ring and the upper portion. When the closure is installed, the tabs pivot to operative position, and remain so as the closure is installed, the relatively thinner upper portion of the ring expanding uniformly through contact of the outwardly-directed surfaces of the tab against the inner surface of the upper portion of the closure ring.

Abstract: A plastic screw cap includes a cylindrical cup provided with an internal thread and with a tamper-evident ring which is coupled to the rim of the cup by means of a plurality of bridges forming a fracture line; the ring has a collar or expansion for retaining it below an annular raised portion of a container whereto the cap is applied. Incisions are formed on the outside of the tamper-evident ring, the incisions do not cross the entire thickness of the ring and allow an elastic radial expansion of the ring, such as to pass beyond the annular raised portion during the application of the cap to the container.

Abstract: The invention relates to a tamper-indicating bottle closure consisting of a threaded bottle cap and a tamper-indicating band connected thereto by selectively rupturable connectors. The band is provided with at least to radially protruding camming members adapted to move over a retaining lip provided on a bottle, by temporarily radially deforming the band, during closure movement between cap and bottle and to be locked behind the retaining rib during opening movement between cap and bottle at a force exceeding the force of the opening movement.

Abstract: A container closure formed from a synthetic resin as a single unit has a circular top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall. An outer cylindrical sealing protrusion, inner cylindrical sealing protrusion and annular sealing ridge arranged therebetween, all having a predetermined shape and a predetermined size, are formed on the inner surface of the top panel wall. The thickness of the center portion of the top panel wall is reduced to a predetermined range and a plurality of ribs having a predetermined thickness are formed on the inner surface of the center portion of the top panel wall.

Abstract: To develop a combination vessel capable of carrying out temporary fastening while always bringing down a ring portion subsequently to breakage of a bridge part during opening. A cap portion (11) and a ring portion (12) in a cap type sealing tool (1) are coupled to each other through a bridge part (13). Through breakage of the bridge part during opening, the ring portion is pulled down while a sliding protrusion (12uc) on an internal wall in a lower stage area of the ring portion always interposes an upward spread zone (2nx) on an external wall of a neck zone of a bottle portion (2) by pressure. In addition, a vertical convex to block the opening turn (12rc) provided on an inner periphery of the ring portion and a vertical convex (2rc) to block opening turn provided on the external wall (2rz) of the neck zone of the bottle portion do not block attachment of the cap type sealing tool (1) but blocks accompanied rotation of the ring portion during the opening of the cap portion, thereby breaking the bridge part.

Abstract: A safety closure including a top wall, a side wall depending from the top wall, and a locking tab projecting outwardly from the side wall, the locking tab having a reinforced end integrally connected to the side wall and a free end connected to the side wall by a biasing strap, wherein the reinforced end of the locking tab inhibits movement of the free end of the locking tab in at least an upward direction.

Abstract: A fitment for use as a pour spout for a paper carton or flexible bag for liquids and powders has a flange which may be welded around a hole in the carton or bag. A spout projecting outward from the flange is provided with a removable membrane integral with the interior of the spout. Preferably the membrane is concave. A horizontally disposed pull ring is attached to the membrane by a connector so that pulling the ring removes the membrane by fracturing the tear line at the juncture of the outer edge of the membrane and the projection. A cap snaps over the spout and may be removed by unscrewing the complementary threads on cap and spout. Optionally, a tamper-evidencing band frangibly connected to the lower edge of the cap skirt engages the exterior of the spout so that the cap cannot be removed without breaking the frangible connection. Various means for detachably securing the fitment to a spud during delivery of the fitment from a chute to the interior of a carton are disclosed.

Abstract: A tamper evident closure formed from a plastics material is disclosed. The closure includes at top wall (3) and a downwardly depending skirt (5) that has an internal thread (7) adapted to engage an external thread (15) on a neck (13) of a container (11). The closure further includes a tamper evident member (9) which includes bridges (27) that connect the member to the skirt. The tamper evident member further includes a side wall that has a series of openings (21) and a plurality of tab members (33) which are connected to the side wall and extend upwardly and inwardly within a space defined by the closure and inwardly of the openings (as viewed from outside the closure). A mould assembly and a method of moulding the closure are also disclosed.

Abstract: A security closure (1) for a glass bottle (2), which can be fitted on the bottle (2) quickly and can be manipulated conveniently, comprises a cap (3) having internal threading (16) with a predetermined large number of starts mating with external threading (17) on the bottle (2), the cap being connected, by means of a line of weakening (10), to a sleeve (11) restrained axially and angularly on the bottle (2), the closure further comprising lead-in means (20) in the sleeve (11) mating with matching lead-in means (21) on the bottle (2) in order to orient the cap (3) and the sleeve (11) angularly relative to the bottle (2) when the cap (3) and the sleeve (11) are fitted axially on the bottle (2).

Abstract: A composite closure for a container has an outer band with a partial toroidal hook that overhangs a crown around the periphery of an insert cover disk. As the closure is tightened on the container, the hook bears downwardly on the crown of the disk and urges the disk against the container rim. The hook has several vents formed on its underside to enable air communication. A lower, inner edge of the hook is spaced apart from the disk to provide communication with the vents from the environment. An annular recess is formed on the underside of the hook, and is in communication with the vents and with a gap formed between an outboard wall of the crown and an inboard sidewall of the hook. A retaining bead is formed on a skirt below the hook to retain the disk. The bead is spaced apart from the disk when the closure is assembly to a container to enable communication from the environment through the vents to the threads.

Abstract: A screw-type bottle cap having a body with an internal thread and a tamperproof strip which has at least one expansion structure that includes at least one point at which it is fixed to the cap body. In this way, a screw-type cap is produced which has a reliable tamperproof function wherein the tamperproof strip remains attached to the cap body when the cap is unscrewed, without the free ends of the strip protruding from the cap body.

Abstract: A tamper-indicating closure of integrally molded plastic construction that includes a base wall having a peripheral skirt with an internal thread for affixing the closure to the container finish. A tamper-indicating band is connected to an edge of the skirt by frangible bridges. A stop flange extends from an edge of the band remote from the skirt for abutment with a bead on the container finish to inhibit removal of the closure absent fracture of the frangible means. A plurality of circumferentially spaced openings extend radially through the skirt at a position between the frangible bridges and the internal thread. These openings provide for ingress of cleansing solution during a washing operation after the closure is applied to a container to flush any residue from between the tamper-indicating band and the closure finish.

Abstract: A closure having a tamper-evident band secured to a container neck by a retaining band. The tamper-evident band is attached to the retaining band by a hinge so that the retaining band rotates upward about the hinge when the closure is applied to the neck of a container, causing the inner wall of the retaining band and the inner wall of the tamper-evident band to form a cavity therebetween. A number of rectangular openings are spaced around the circumference of the retaining band. The upper edge of each opening extends beyond the hinge and into the tamper-evident band. A recess in the inner wall of the tamper-evident band is located above each opening so that the lower edge of the recess intersects with the rear wall of the opening. The openings and recesses cooperate to ensure that any liquid that spills or splashes from the container neck into the cavity during capping will drain out.

Abstract: A tamper-resistant bottle closure includes a cap and a breakaway skirt connected by a plurality of frangible links and inhibits tampering with the fluid contents of the bottle. A stopping ledge extending outward from the bottle neck retains the breakaway skirt, thus breaking the frangible links when the cap is removed. The breakaway skirt includes a number of inner skirts, a security ring which wraps around the bottle, a number of securing straps, and a plurality of security fins which further inhibit tampering with the closure. A second embodiment includes a plurality of inner skirts that alternately attach distal to and proximate from the frangible links. A third embodiment includes a first set of inner skirts extending around to a first stopping ledge and a second set of inner skirts extending around a second stopping ledge. A fourth embodiment includes an intermediate link interposed between the wing and the inner protuberance of the inner skirts.

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 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. The exterior of the neck is formed with screw threads which engage threads on the interior of the outer skirt of the cap. Caps suitable for combination with the neck, methods of forming the neck and mold apparatus for forming the neck are also disclosed.

Abstract: This mould is intended to form a cap (1) having a cylindrical skirt (3), this skirt being provided with at least one screw thread (4), a top (2) and a tamperproof ring (6) linked to the free end of the skirt by breakable linking elements. It has a movable part or mould top (20), a stripping part or stripper ring (21) and a core (22).

Abstract: A tamper-indicating closure of integrally molded plastic construction that includes a base wall having a peripheral skirt with internal threads for engaging external threads on the finish of a container. A tamper-indicating band is connected to the lower or free edge of the skirt by a plurality of circumferentially spaced integral bridges. At least one of the bridges has a greater circumferential dimension than other of the bridges. A thin integral membrane is disposed in the band immediately circumferentially adjacent to the one bridge, and extends both axially and circumferentially of the band. A stop flange is positioned on the band for engaging a bead on a container to inhibit removal of the closure, such that the membrane and the other bridges rupture upon removal of the closure but the band remains connected to the closure by the one bridge of enlarged circumferential dimension.

Abstract: The present invention relates to plastic tubes, and in particular to those which have a locking mechanism which comprises a locking cam and a latching cutout and which permits reliable latching of the tube cap to the tube. The invention also relates to plastic tubes which have a sealing strip which is constructed on the tube cap and, in accordance with the invention, can assume specific preferred embodiments.

Abstract: A rotatable label system includes a drinking vessel having indicia disposed on an exterior surface of the drinking vessel and a rotatable label formed from a heat-shrinkable shell or sheet arranged about the drinking vessel. The rotatable label has indicia disposed thereon and may include at least one transparent window through which co-located indicia disposed on the surface of the drinking vessel may be viewed. The rotatable label is rotatable relative to the drinking vessel about a vertical axis thereof to enable viewing of a selected subset of the indicia disposed on the drinking vessel. Surface features and contours of the drinking vessel maintain the rotatable label longitudinally upon the drinking vessel.

Abstract: A threaded closure for pressurized containers, typically for carbonated beverages is disclosed. The closure includes a deformable liner of non-vinyl polymer which is cold formed in the closure using known techniques in such manner that the liner physically bonds to the inner surface of the end wall of the closure to be retained thereby in the absence of a peripheral lip or projections on the inner surface of the end wall of the closure. The closure itself may be either injection molded or compression molded. The usual tamper indicating ring is formed to include frangible bridge members either by molding or a separate slitting operation. The pivotally mounted tabs for separating the tamper-indicating ring are sufficiently rigid to avoid flexing at points other than at an outer edge hinge axis where pivoting is possible only to a limited degree, thus assuring the severing of the frangible bridge members at an early stage of opening of the closure.

Abstract: A tamper-indicating closure of integrally molded plastic construction that includes a base wall having a peripheral skirt with an internal thread for engaging corresponding external means on a container finish to retain the closure on the finish. A tamper-indicating band is connected to an edge of the skirt by a plurality of spaced integral frangible bridges. A stop flange extends axially and radially from an edge of the band remote from the skirt, being flexibly connected to the band by an integral hinge portion. A plurality of circumferentially spaced openings extend axially through the band adjacent to the hinge portion, forming drain openings through which fluid may drain after the closure is applied to a wet container finish.

Abstract: A self-centering container closure includes a locator annulus which extends downwardly from the undersurface of the crown, radially inwardly from a resilient fin. The annulus extends downwardly by a distance greater than the fin and has an outer diameter slightly smaller than that of the inner diameter of the neck of the container with which it is to be used. The annulus assists with centering the closure on the container as the closure is screwed onto the container.

Abstract: A tamper-indicating plastic closure for a container having an annular locking ring includes a closure part cap and a pilfer band connected to the closure part at a frangible connection. A plurality of circumferentially spaced substantially rigid tabs extend generally inwardly from an inner surface of the pilfer band, and the length of at least one of the tabs is shorter than the length of the remaining ones of the tabs. The tabs have lengths sufficient to engage the annular locking ring to provide tamper-indication when the closure part is removed from the container, and the length of the shorter tabs is sufficiently less than the length of the remaining ones of the tabs that the shorter tabs are not permanently deformed by the locking ring when the closure is applied to the container. The pilfer band preferably has at least one weakened region, and the shorter tab is positioned adjacent the weakened region.

Abstract: A tamper-indicating closure of integrally molded plastic construction that include a base wall having a peripheral skirt with internal threads for engaging external threads on a container finish. A tamper-indicating band is connected to the edge of the skirt by a plurality of circumferentially spaced integral frangible bridges. A stop flange extends from an edge of the band remote from the skirt for engagement with a bead on the container finish. The stop flange has a circumferentially continuous free edge remote from the band disposed in a plane parallel to the base wall. A plurality of circumferentially spaced openings are disposed in the stop flange adjacent to the band for drainage of liquid from between the closure skirt and the container finish. A plurality of circumferentially spaced gussets in the stop flange are at the free edge of the ring, with each gusset being disposed between an adjacent pair of drainage openings.

Abstract: A plastic screw cap of the type composed of a cylindrical cup provided with an internal thread and with a tamper-evident ring attached to the rim of the cup, the ring being provided with a retention collar engaging below an annular ridge of a container whereto the cap is applied, wherein the rim of the cup and the border of the ring, except for at least one angularly arranged portion constituting a connection region, are mutually separated by incisions which run all along the circumference of the tamper-evident ring by cutting through the thickness thereof.

Abstract: The tamper indicating closure disclosed herein is designed for use with containers having a threaded neck section and an annular bead or flange located below the threaded neck section. The tamper indicating closure includes a cap with a top wall and a downwardly extending annular side wall. The cap includes a thread on the inner surface of the side wall for locating the closure on the threaded section of the container neck, and a tamper indicating member is connected to the lower section of the side wall. The tamper indicating member includes an annular band with a plurality of upwardly extending locking tabs. A plurality of flexible hinges are used to interconnect the locking tabs and the annular band. The locking tabs are configured to react against the annular head or flange of the container neck to prevent the removal of the annular band from the container when the closure is in a closed position.

Abstract: A tamper evident closure for use in the neck of a container has a plurality of severable connectors, connecting a tamper evident band with a hinged flange to the lower edge of a skirt. A support wall is located just inside the connectors where the connectors are attached to the lower edge. The connectors are strong enough to remain in tact during installation and transport, but weak enough to sever when the closure is subsequently removed from the container. The closure has severable connectors connecting a tamper evident band to a lower edge of a skirt. The connectors are at a 45.degree. angle relative to vertical when the container is in an upright position. In a further embodiment, a closure has a block seal that is thin enough to be easily removed from the mold in which the closure is formed without opening the mold in two directions. The block seal is thick enough to provide a solid seal between the closure and the container when the closure is installed on the container.

Abstract: A closure cap (210) including a tamper-indicating band (218) with an inwardly and upwardly turned retaining rim (224) having ramp elements (226), and the neck (240) of a bottle includes corresponding ramp elements (244).

Abstract: A pilfer-proof plastic cap of the type for sealing threadably capped containers. The cap comprises a cap body, a band member and an annular wall extending upwardly and radially inward from the band member. A plurality of stopper tabs formed in the annular wall is engagable with the threads of a threadably capped container. The stopper tabs have a saw-tooth shape including a mildly inclined leading surface for smooth engagement of the cap with the container threads. The band member is connected to the cap with breakable bridges to indicate tampering. The band itself contains a breakable bridge to ease removal of the band from the container.