WO1991001924A1 - Fermeture de securite - Google Patents

Fermeture de securite Download PDF

Info

Publication number
WO1991001924A1
WO1991001924A1 PCT/GB1990/001174 GB9001174W WO9101924A1 WO 1991001924 A1 WO1991001924 A1 WO 1991001924A1 GB 9001174 W GB9001174 W GB 9001174W WO 9101924 A1 WO9101924 A1 WO 9101924A1
Authority
WO
WIPO (PCT)
Prior art keywords
skirt
container
closure
frusto
safety closure
Prior art date
Application number
PCT/GB1990/001174
Other languages
English (en)
Inventor
Eric Trevor Hopley
Original Assignee
Cmb Foodcan Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cmb Foodcan Plc filed Critical Cmb Foodcan Plc
Publication of WO1991001924A1 publication Critical patent/WO1991001924A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
    • B65D50/04—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one
    • B65D50/045—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring
    • B65D50/046—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring and such deformation causes the disengagement of locking means, e.g. the release of a pawl-like element from a tooth or abutment, to allow removal of the closure by simultaneous rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
    • B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges

Definitions

  • This invention relates to safety closures and is especially concerned with a safety closure which requires a combined squeezing and turning operation to remove it from a container to which it is applied.
  • Many different types of safety closure, or child-resistant closure have been proposed, amongst which is the type generally known as the "squeeze-and-turn" type.
  • This has a threaded skirt for screw-threaded application to and removal from the neck of a container, and a deformable portion including one or more internal fins or lugs which co-operate with corresponding abutments on the container neck to resist the unscrewing operation necessary to remove the closure from the container until the deformable portion of the closure is deformed to place the fins or lugs clear of the abutments.
  • a simple form of this type of safety closure is disclosed in United Kingdom Patent Specification 1521201, in which the closure is provided with a single skirt, the upper portion of the skirt being provided with a screw-thread for engagement with a screw-thread on the container neck; and the lower portion of the skirt being deformable and having internal lugs which engage a camming projection on the container neck.
  • both the single-walled and the double-walled safety closure are very efficient, but they do have disadvantages.
  • one part of the closure skirt, the threaded part must of necessity be substantially non-deformable, whereas the other part of the skirt must be deformable in order that the lugs and projections may be taken out of engagement.
  • This is not a problem with the double-walled closure, since the threaded part may be non-deformable, and the radially outer wall deformable to the extent necessary to remove the lugs from engagement with the projections.
  • the double-walled closure is unattractive. The presence of the outer wall or skirt, necessarily separated from the inner wall, gives to the closure an overall "heavy" or clumsy appearance.
  • a safety closure for a container said closure having a disc-like top, a cylindrical skirt downwardly dependent from the periphery thereof, which skirt is threaded to engage a corresponding thread on the neck of the container, and a substantially frusto-conical shaped skirt provided with internal ribs for engagement with corresponding abutments on the container, the frusto-conical skirt being deformable such that said ribs and abutments do not engage when said skirt is deformed, wherein the frusto-conical skirt has a wall thickness which increases gradually from the point at which it merges with the cylindrical skirt to its free end.
  • a structure of this kind has the advantage of an attractive appearance, such as that of the known single- walled closure, combined with the ease of manufacture of the known double-walled closure.
  • the frusto-conical skirt merges at its upper end into the cylindrical skirt at a position below the periphery of the disc-like top.
  • the thickness of the wall of the frusto-conical skirt where it merges with the cylindrical skirt may for example be of the order of 0.3 to 0.5 mms, and the thickness of its free end for example 1.0 to 2.0 mms; this represents a taper of some 2° to 5° for a 24mm cap.
  • the cone angle between the frusto-conical skirt and the screw threaded cylindrical skirt is preferably of the order of 5° to 15°, for example 8°.
  • the internal ribs on the frusto-conical skirt are radial ribs; alternatively they may lie at an angle to the radius of the cap.
  • the abutments on the container may be shaped, e.g. concavely, to receive the leading edges of the ribs.
  • the thread on the container is suitably provided with a stop buttress to prevent overtightening of the closure onto the container, and also to assist alignment of the closure and container.
  • the lowermost turn of the thread on the closure may be enlarged, e.g. by enlarging the root internal diameter at this point whilst keeping the thread peak diameter constant, and the thread peak diameter on the container enlarged.
  • Additional “safety” may be built into the closure by providing it with a tear-off strip or tear band at the lower end of the frusto-conical skirt, such that the deformable skirt cannot be deformed until after the tear band has been removed.
  • tear band will suitably be joined to the deformable skirt by spaced frangible bridges. In one form the bridges will be positioned axially below the squeeze points of the skirt, with the internal surface of the tear band being tight up against the cylindrical surface of an annular shoulder formed on the container below the abutments. Squeezing of the skirt to deform it is impossible until the tear band has been removed.
  • the internal surface of the tear band is provided with a series of spaced axial ribs, the radially inward surfaces of the ribs being tight up against the annular shoulder on the container to prevent deformation of the skirt on squeezing until after removal of the tear band.
  • the axial ribs may be joined by an annular web for additional stability.
  • the internal surface of the tear band is provided with inwardly and obliquely directed teeth or ratchets which mesh with corresponding teeth or ratchets formed on an annular shoulder on the container. In this case, even if it is possible to deform the skirt by squeezing, it is. not possible to unscrew the closure until after the tear band has been removed.
  • annular collar which surrounds the lower portion of the frusto-conical skirt and prevents access to the squeeze points on the skirt.
  • the annular collar may be formed as an extension of the tear band and may, if desired, be stiffened at least in the region of the squeeze points by buttresses or stiffening ribs.
  • the stiffening ribs on the collar may suitably be formed as extensions of the axial ribs provided on the inside of the tear band in accordance with the embodiment detailed above.
  • a security ring is provided at the lower end of the frusto- conical skirt, and joined thereto by a frangible web or spaced frangible bridges.
  • the inner wall or surface of the security ring is provided with one or more inwardly- directed projections which act against a surface of the container such that when the closure is unscrewed from the container the web or bridges fracture and the security ring remains on the container.
  • the inwardly-directed projections are preferably upwardly-directed spaced arcuate fins which, on unscrewing of the closure, come into contact with an annular shoulder on the container and prevent further upwards movement of the security ring relative to the container neck.
  • the security ring is preferably attached to the frusto-conical skirt by means of four equi-spaced frangible bridges, suitably positioned at the nodal points of the cap skirt (i.e. those points which do not move out of position when the frusto-conical skirt is deformed) .
  • the upwardly- and inwardly-directed fins are preferably four in number, and situated between adjacent pairs of bridges. The fins may be moulded in the closure in the attitude which they assume when the closure is attached to the container.
  • Figure 1 is a part sectional elevation of a safety closure according to one embodiment
  • Figure 2 is a detail of a second embodiment, having a tear band, attached to a container;.
  • Figure 3 is an elevation, partly in section, of a further embodiment having an alternative form of tear band
  • Figure 4 is a section on the line IV-IV of Figure 3;
  • Figure 5 is a part sectional elevation of a fourth embodiment of the invention.
  • Figure 6 is a section on the line VI-VI of Figure 5;
  • Figure 7 is a part sectional elevation of a fifth embodiment of the invention.
  • Figure 8 is a part-sectional elevation of a sixth embodiment of the invention.
  • the safety closure shown in Figure l has a disc-like top 1 from which depends an internal flexible annular sealing plug 2. From the periphery of the disc-like top 1 depends a substantially rigid cylindrical inner wall 3 having a screw thread 4 for engagement with a complementary thread on the neck of a container to which the closure is applied.
  • a frusto-conical outer wall 5 merges into the cylindrical wall 3 a short distance below the top of the wall 3.
  • the wall 5 tapers in thickness, its thinnest portion being at the point 6 where it merges into the cylindrical wall 3, and its thickest portion being at its outer end 7.
  • the thinning of the wall 5 where it merges into the wall 3 gives the necessary flexibility or de- formability to the wall 5.
  • ribs 8 Formed internally of the wall 5 are ribs 8 which engage and co-operate with corresponding abutments or projections on the container neck in the manner disclosed in the prior Specifications referred to above.
  • the ribs 8 ride over and seat behind the corresponding abutments on the neck, so that normal unscrewing removal of the closure is impossible.
  • the ribs 8 In order to unscrew the closure, the ribs 8 must be placed clear of the abutments, and this is achieved by exerting radial pressure on the wall 5, at the positions of diametrically opposed flats 9 provided at right angles to the ribs 8, and this has the effect of deforming the wall 5, at its lower end, into elliptical form whereby the ribs 8 are placed clear of the abutments on the container neck and the closure may then be un ⁇ screwed in the normal manner.
  • the internal ribs on the frusto-conical skirt 5 are not radial (as at 8 in Figure 1) but are rather obliquely directed ribs 18 which bear against abutments 10 formed on the neck portion 11 of a container.
  • abutments 10 there are suitably two such abutments 10, diametrically opposed. Situated beneath abutments 10 is an annular shoulder 12 having a cylindrical outer surface 13. Attached to the end of skirt 5 is a tear band 14. The attachment of band 14 to skirt 5 is through spaced frangible bridges 15. Preferably there is a bridge adjacent each squeeze point or flat 9.
  • the inner surface of the band 14 is a tight, or at least snug, fit against the cylindrical surface 13 of the annular shoulder 12. Thus, it is impossible to squeeze the skirt 5 at the squeeze points 9 while the tear band 14 is attached to the skirt 5. Removal of the tear band must precede the deformation and subsequent unscrewing of the closure.
  • the internal ribs 18 are again obliquely directed, as in the Figure 2 embodiment.
  • the abutments 10 on the container are profiled to receive the edges of the ribs 18. Beneath the abutments 10 is an annular shoulder 20 provided with opposed sets of ratchets 21.
  • a tear band 24 Attached to the lower end of skirt 5 is a tear band 24, the attachment of the tear band to the skirt being through spaced frangible bridges 25.
  • ratchets 26 Provided internally of the tear band are opposed series of ratchets 26 which mesh as shown with the ratchets 21 on the container neck, thus preventing unscrewing of the closure until the tear band 24 has been removed.
  • the ends of the tear band are joined by a thin link band 27 through a frangible bridge 28.
  • the closures of Figure 2 and Figures 3 and 4 are applied to a container by simply screwing them on in the normal way.
  • the interior axial surfaces of the ribs 30 are a tight, or at least snug, fit against the external cylindrical face of the shoulder 12.
  • the provision of an integrally-formed arcuate web 33, at least in the region of the ribs 30, helps to ensure that when the closure is squeezed at diametrically-opposed points 9, the abutment of the ribs 30 against the shoulder 12 prevents the skirt 5 from being deformed.
  • a further sa ety feature is provided by the upstanding annular collar 40 which surrounds the lower half of skirt 5 and prevents finger access to the squeeze points 9.
  • the collar 40 is an axial extension of tear band 14 and, in the embodiment shown, is provided with internal strengthening ribs 41 which conveniently are axially aligned with ribs 30.
  • FIG. 8 The example of the invention illustrated in Figure 8 is similar in many respects to that shown in Figure 5, but in the case of the Figure 8 example a security ring 50 is attached to the lower end of skirt 5 by means of four equi-spaced frangible bridges 51, the points of attachment of the bridges 51 to skirt 5 being at the nodal points of the skirt.
  • Integrally moulded to the security ring 50 are four arc-shaped flexible fins 52, equi-spaced around the ring 50 and situated between respective pairs of bridges 51 when the ring 50 is viewed in plan. Fins 52 have their roots at the lower end of ring 50, from where they extend upwardly and inwardly.
  • An annular shoulder 53 is provided on the container beneath the screw-threaded neck 11.
  • the closure is removed by squeezing the skirt 5 at the squeeze points 9, whereby the ribs 18 are placed radially clear of the abutments 10.
  • the closure may then be unscrewed until the free ends of the fins 52 come into contact with the lower face of the shoulder 53. This arrests the upwards movement of security ring 50.
  • Continued unscrewing of the closure stresses the bridges 51 until they break, allowing complete removal of the closure while the ring 50 remains on the container.
  • the diameter of the circle produced by the upper ends of the fins 52 is preferably slightly larger, e.g. by about 2 mms, than the external diameter of the nearest portion 54 of the container, so ensuring that the ring 50 falls down the container and is not retained in its Figure 8 position by frictional engagement with the container.
  • All the closures illustrated are suitably produced by the injection moulding of a thermoplastics material such as, for example, polypropylene or polystyrene.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

Une fermeture de sécurité pour récipients comprend une partie supérieure (1) en forme de disque, avec une bordure cylindrique (3) verticale qui part de la périphérie de la partie supérieure. La bordure est filetée de façon à enclencher un filetage correspondant du col du récipient. Une bordure (5) essentiellement tronconique est pourvue de nervures internes (8, 18) qui enclenchent des butées correspondantes (10) du récipient. La bordure tronconique est déformable, de sorte que les nervures et les butées ne s'enclenchent pas lorsque l'on déforme la bordure. L'épaisseur de la paroi de la bordure tronconique augmente graduellement depuis son point (6) de contact avec la bordure cylindrique jusqu'à son extrémité extérieure (7).
PCT/GB1990/001174 1989-08-02 1990-07-30 Fermeture de securite WO1991001924A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898917646A GB8917646D0 (en) 1989-08-02 1989-08-02 Safety closure
GB8917646.5 1989-08-02

Publications (1)

Publication Number Publication Date
WO1991001924A1 true WO1991001924A1 (fr) 1991-02-21

Family

ID=10661036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001174 WO1991001924A1 (fr) 1989-08-02 1990-07-30 Fermeture de securite

Country Status (4)

Country Link
GB (1) GB8917646D0 (fr)
IE (1) IE902789A1 (fr)
WO (1) WO1991001924A1 (fr)
ZA (1) ZA906061B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443868A1 (fr) * 1990-02-23 1991-08-28 CMB BOTTLES & CLOSURES PLC Fermeture de sécurité
WO1994011267A2 (fr) * 1992-11-13 1994-05-26 Beeson And Sons Limited Ameliorations apportees a une bague indicatrice d'effraction pour la fermeture d'un recipient
JP2004149223A (ja) * 2002-10-29 2004-05-27 Johnson & Johnson Consumer Co Inc 不正開封防止機能付きディスペンサーボトル
WO2005056417A1 (fr) * 2003-12-09 2005-06-23 Owens-Illinois Closure Inc. Bouchon en plastique moule, a l'epreuve des enfants, conditionnement integrant celui-ci et recipient associe
WO2009000616A1 (fr) * 2007-06-28 2008-12-31 Airsec S.A.S. Dispositif de fermeture à sécurité enfant, à vis et à bague témoin de première ouverture
WO2020247449A1 (fr) * 2019-06-03 2020-12-10 Nypro Inc. Bouchons sans pellicule

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117945A (en) * 1977-06-29 1978-10-03 Owens-Illinois, Inc. Child-resistant safety closure
FR2467791A1 (fr) * 1979-10-19 1981-04-30 Farges Paul Capsule de securite pour bouchage de flacon
GB2148259A (en) * 1983-10-19 1985-05-30 Anchor Hocking Corp A tamper-indicating child-resistant closure
FR2571695A1 (fr) * 1984-10-11 1986-04-18 Jarry Albert Fermeture de protection a l'epreuve des enfants
EP0202728A2 (fr) * 1985-05-15 1986-11-26 Phoenix Closures, Inc. Ensemble bouteille-fermeture anti-fraude
EP0307169A1 (fr) * 1987-09-11 1989-03-15 Kerr Glass Manufacturing Corporation Fermeture inviolable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117945A (en) * 1977-06-29 1978-10-03 Owens-Illinois, Inc. Child-resistant safety closure
FR2467791A1 (fr) * 1979-10-19 1981-04-30 Farges Paul Capsule de securite pour bouchage de flacon
GB2148259A (en) * 1983-10-19 1985-05-30 Anchor Hocking Corp A tamper-indicating child-resistant closure
FR2571695A1 (fr) * 1984-10-11 1986-04-18 Jarry Albert Fermeture de protection a l'epreuve des enfants
EP0202728A2 (fr) * 1985-05-15 1986-11-26 Phoenix Closures, Inc. Ensemble bouteille-fermeture anti-fraude
EP0307169A1 (fr) * 1987-09-11 1989-03-15 Kerr Glass Manufacturing Corporation Fermeture inviolable

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443868A1 (fr) * 1990-02-23 1991-08-28 CMB BOTTLES & CLOSURES PLC Fermeture de sécurité
WO1994011267A2 (fr) * 1992-11-13 1994-05-26 Beeson And Sons Limited Ameliorations apportees a une bague indicatrice d'effraction pour la fermeture d'un recipient
WO1994011267A3 (fr) * 1992-11-13 1994-09-29 Beeson & Sons Ltd Ameliorations apportees a une bague indicatrice d'effraction pour la fermeture d'un recipient
US5819965A (en) * 1992-11-13 1998-10-13 Beeson And Sons Limited Tamper evident ring for a container closure
EP1632438A2 (fr) * 2002-10-29 2006-03-08 JOHNSON & JOHNSON CONSUMER COMPANIES, INC. Bouteille distributrice inviolable
JP2004149223A (ja) * 2002-10-29 2004-05-27 Johnson & Johnson Consumer Co Inc 不正開封防止機能付きディスペンサーボトル
EP1632438A3 (fr) * 2002-10-29 2006-06-07 JOHNSON & JOHNSON CONSUMER COMPANIES, INC. Bouteille distributrice inviolable
JP4606723B2 (ja) * 2002-10-29 2011-01-05 ジョンソン・アンド・ジョンソン・コンシューマー・カンパニーズ・インコーポレイテッド 不正開封防止機能付きディスペンサーボトル
WO2005056417A1 (fr) * 2003-12-09 2005-06-23 Owens-Illinois Closure Inc. Bouchon en plastique moule, a l'epreuve des enfants, conditionnement integrant celui-ci et recipient associe
WO2009000616A1 (fr) * 2007-06-28 2008-12-31 Airsec S.A.S. Dispositif de fermeture à sécurité enfant, à vis et à bague témoin de première ouverture
FR2918041A1 (fr) * 2007-06-28 2009-01-02 Airsec Soc Par Actions Simplif Dispositif de fermeture a securite enfant,a vis et a bague temoin de premiere ouverture
US8302792B2 (en) 2007-06-28 2012-11-06 Airsec S.A.S. Child-safe closure device with a deformation engagement skirt
WO2020247449A1 (fr) * 2019-06-03 2020-12-10 Nypro Inc. Bouchons sans pellicule

Also Published As

Publication number Publication date
GB8917646D0 (en) 1989-09-20
IE902789A1 (en) 1991-02-27
ZA906061B (en) 1991-05-29

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