EP0725013A1 - Capuchon inviolable pour un fût - Google Patents

Capuchon inviolable pour un fût Download PDF

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Publication number
EP0725013A1
EP0725013A1 EP96200415A EP96200415A EP0725013A1 EP 0725013 A1 EP0725013 A1 EP 0725013A1 EP 96200415 A EP96200415 A EP 96200415A EP 96200415 A EP96200415 A EP 96200415A EP 0725013 A1 EP0725013 A1 EP 0725013A1
Authority
EP
European Patent Office
Prior art keywords
skirt
cap
ring
tamper
evident
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP96200415A
Other languages
German (de)
English (en)
Inventor
Henry Dudzik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Impress Sutton Ltd
Original Assignee
Lawson Mardon Sutton Ltd
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 Lawson Mardon Sutton Ltd filed Critical Lawson Mardon Sutton Ltd
Priority claimed from EP94308003A external-priority patent/EP0652162B1/fr
Publication of EP0725013A1 publication Critical patent/EP0725013A1/fr
Ceased legal-status Critical Current

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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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0863—Plastic snap-on cap-like collars having frangible parts
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0071—Lower closure of the 17-type
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/25—Non-metallic tear-off strips
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/35—Vertical or axial lines of weakness

Definitions

  • This invention relates to a tamperproof cap for a keg spear, as provided on beer kegs.
  • a keg spear is screw-engaged in a keg and has an external access portion comprising a peripheral wall defining a recess, an access device being provided in the recess.
  • the peripheral wall is provided with an outwardly extending annular projection and a tamper-evident cap has a ring of teeth, which can be snap-engaged over the annular projection to cover the recess and prevent the keg contents being accessed without removal of the cap.
  • the keg spears are generally made with the peripheral walls of the same diameter, within tolerances.
  • the annular projections are made of different profiles by different manufacturers and the different profiles have, for example, varying axial depths. This makes it difficult to produce a cap, which is satisfactory with all keg spears.
  • the cap has to be sufficiently resilient to snap over the annular projections of different profiles, but must be brittle enough for the cap to break, if an attempt is made to remove the cap. This has proven to be difficult to achieve in practice.
  • brittle materials means that different caps have to be made for different profiles and/or there are numerous failures when the caps are applied, whereas use of less brittle materials enables the cap to be removable without damage. This is sometimes achieved by gently warming the cap, if it is thermoplastic, so that it becomes easier to remove.
  • One tamper-evident cap relies on brittleness of the material, so that the teeth, snap-engaged over the annular projection, break when an attempt is made to remove the cap. This is unsatisfactory for several reasons.
  • the cap is not usable with all keg spears, because of poor tolerances.
  • the brittleness of the material means that tolerances have to be small.
  • GB-A-2082151 proposed an arrangement in which the skirt of the cap, provided with the teeth, had a tapering portion below the teeth, which would break when an attempt was made to remove the cap. It has, however, proved difficult to make a cap, which is effective, because of the conflicting requirements of resilience, for snap-engagement on keg spears of different profiles, and brittleness to provide tamper-evidence, in particular, because of the possibility of increasing the flexibility by warming.
  • GB-A-2082151 used a brittle material, such as polystyrene or a.b.s.
  • the present invention seeks to overcome these prior art problems.
  • the present invention provides a tamper-evident cap for a keg spear the cap comprising a top and a skirt provided with a ring of internally projecting means snap-engageable over an annular flange on the keg spear to resist removal of the cap, a tamper-evident ring of larger diameter than the skirt being attached to the skirt adjacent its free end remote from the top, the ring extending axially away from the top and being attached to the skirt by several frangible tags spaced around the ring and extending radially between the skirt and the ring; characterised in that each tag reduces in width away from the ring and the skirt and has substantially point-to-point attachment to the other of the ring and skirt.
  • This arrangement provides a ring which obstructs access to the skirt for levering off the cap.
  • the ring itself is easily caused to detach from the rest of the cap at the frangible tags and breaking of tags causes the ring to be loose, so that there is an immediate indication that the cap has been tampered with.
  • the tags point-to-point attachment to circumferentially spaced projections on the skirt, prevents a detached ring from being wedged in its correct position to conceal tampering.
  • the cap can be readily fitted to a keg spear by an automatic system by applying pressure to the top of the cap.
  • the ring does not contact the keg spear during fitting and the conflicting requirements of brittleness and resilience for the cap are removed.
  • Fitting of the cap does not cause fracture of the tags.
  • During fitting of the cap there is radial distortion of the skirt, which could cause fracture of axial tags.
  • the radial tags of this invention are under radial compression, which they can withstand, whereas a small, axial shear force can break the tags.
  • a tool cannot be used on the cap, to unscrew the keg spear, since the tool will cause breakage of the tags by bearing on the ring, which is of greater diameter than the skirt.
  • the cap is preferably made of high density polyethylene, or polypropylene, which provides sufficient resilience for fitting different keg spear profiles, but which make it very difficult to re-adhere the tamper-evident ring in its correct position, without causing obvious damage as evidence of tampering.
  • US 4,699,285 discloses a closure device for a threaded bottle top comprising a cap with a skirt having internal screw threads, an insert, and a tamper-evident band attached to the skirt.
  • the band may comprise bridges (36), each of which reduces in width away from the band until the point of attachment with the skirt.
  • GB-2265892 discloses a cap of superficial resemblance to a keg spear cap. This cap, however, has a skirt with a screw-thread, and a tamper-evident ring is provided to prevent unscrewing of the cap, without damage to the tamper-evident ring. The ring can be removed to allow the rest of the cap to be used, removed and re-applied by means of the screw-thread.
  • the purpose of the tamper-evident ring is quite different from that of the present invention.
  • the concept of providing a ring which has formations to prevent rotation, so as to provide tamper-evidence of unscrewing of the cap has no bearing on the tamper-evidence problem in relation to a keg spear.
  • the cap With a keg spear, the cap is non-removably fixed on the keg spear, removal only being possible by destruction of the cap.
  • the cap is rotatable on the keg-spear. The problem to be met is not to provide tamper evidence of rotation, but to provide tamper evidence of levering off of the cap.
  • US 4,712,705 discloses a tamper-evident cap for a beverage tank disperser valve in which the cap has a lower skirt portion attached to the body by a plurality of spaced frangible connecting elements and an integral tear strip.
  • a problem with such caps is that tampering can be concealed if a detached tear strip is wedged in its correct position.
  • the prior art has not considered the possibility of providing a ring, which obstructs access to the cap and is easily, substantially detached from the cap as a sign of tamper evidence, but cannot readily be wedged in position to conceal tampering.
  • the skirt preferably has an axial weakened portion at a circumferential location to permit splitting of the skirt to facilitate removal of the cap from a keg spear.
  • Such an arrangement is disclosed in GB-2082151 and US-A-4779750.
  • the ring is also, preferably, securely fixed to the skirt adjacent the circumferential location, so that the ring can be detached from the skirt, except at said location, by breaking of the tags and used as a handle to split the skirt at the weakened portion.
  • the above feature facilitates very simple removal of the cap in one-piece in a single action, thereby overcoming the problems associated with the production of separate cap remnants such as tooth fragments experienced with known caps for keg spears.
  • the prior art has not considered the possibility of providing a ring which can be detached and used as a handle to facilitate easy removal of the cap in one-piece.
  • the cap shown comprises a top 11, a skirt 12, and an internal ring of circumferentially spaced teeth 13 projecting inwardly from the skirt between the top and the free end 14 of the skirt.
  • the top 11 of the cap has apertures 15 aligned with respective teeth to permit injection moulding of the teeth.
  • UK patent application no. 2082151 discloses a similar arrangement to that so far described.
  • the ring of teeth 13 is snap-engageable over an annular, outwardly extending flange on a keg spear, to secure the cap on the spear, in known manner as described in the above published application.
  • the skirt 12 of this embodiment of the invention has a radially, outwardly extending flange 16 at the free end, the flange being of generally triangular section with an inclined surface 17 leading to a narrow, circumferential edge 18.
  • the skirt also has optional, axial slots 19 spaced around the skirt, with thin portions 20 bridging the slots. These assist removal of the cap.
  • a tamper-evident ring 40 is provided, which is of greater diameter than the skirt 12.
  • the ring 40 is attached to and surrounds the circumferential edge 18 of the skirt and extends axially beyond the free end 14 of the skirt.
  • the axial length of this extension is determined to make it difficult to insert fingers, or a levering tool under the free end of the skirt without contacting the skirt.
  • the ring 40 is attached to the skirt by tags 41 on the inside of the ring. These tags are generally of triangular form and are tapered substantially to a point.
  • the edge 18 of the skirt 12 has recesses 42, each provided with a triangular tag 43.
  • These tags on the skirt have substantially point-to-point attachment to the tags 41 on the ring 40. All of the tags extend radially between the ring and the skirt.
  • the ring and tags are injection moulded with the rest of the cap in one piece.
  • High density polyethylene is preferred, or polypropylene may be used.
  • the ring 40 is securely fixed to the skirt 12 by a bridge 30 at one circumferential position.
  • This bridge is bounded at opposite sides by axial lines of weakness in the skirt. These lines of weakness are defined by a pair of the axial slots 19a,19b with bridging portions 20a,20b.
  • a radial tab 31 is also defined in the top 11 between a pair of elongate lines of weakness 32,33, which join the respective slots 19a,19b in the skirt 12.
  • the lines of weakness are defined by slots with thin, frangible portions 34 joining the tab 31 to the rest of the top 12.
  • the bridge 30 is joined to the tab 31.
  • a manually grippable portion 36 extends radially outwardly of the ring 40 diametrically opposite to the location of the bridge 30. This can be omitted, if required, but serves primarily to indicate the point at which the cap should be gripped to effect removal from a keg spear.
  • the cap In use, the cap is secured to a keg spear by application of a force to the top 11 of the cap, so that the teeth and the skirt deform resiliently and snap over the annular projection of the keg spear in known manner. No force is directly applied to the ring 40. Deformation of the skirt puts the tags 41,43 in radial compression without breaking the connection between the tags.
  • the cap is easily removed by grasping the ring 40 at the grippable portion 36 and pulling ring. This breaks the frangible connection at the tags 41,43 and the ring then serves as a handle to put force on the bridge 30. Continued pulling on the ring causes the bridge 30 and longitudinal edges of the tab 31 to separate from the remainder of the cap, with breaking of the bridging portion 20a,20b and frangible portions 34. This splits the cap, while the cap remains in one piece, to facilitate removal of the cap.
  • a label (not shown) may be adhered to the top 11.
  • the label may serve as a dust cover by covering the moulding apertures and other gaps in the top.
  • the label is rippable by the separation of the longitudinal edges of the tab 31, when the cap is removed from a keg spear.
  • the edge of the ring 40 may have an uneven surface, e.g. may be castellated, to make it difficult to run a finger, or levering tool circumferentially around the keg spear in an attempt to remove the cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP96200415A 1993-11-06 1994-10-31 Capuchon inviolable pour un fût Ceased EP0725013A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9322908 1993-11-06
GB939322908A GB9322908D0 (en) 1993-11-06 1993-11-06 Tamper-evident cap for a keg spear
GB9402004A GB9402004D0 (en) 1993-11-06 1994-02-02 Tamper-evident cap for a keg spear
GB9402004 1994-02-02
EP94308003A EP0652162B1 (fr) 1993-11-06 1994-10-31 Capuchon inviolable pour un fût

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP94308003.6 Division 1994-10-31

Publications (1)

Publication Number Publication Date
EP0725013A1 true EP0725013A1 (fr) 1996-08-07

Family

ID=10744763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96200415A Ceased EP0725013A1 (fr) 1993-11-06 1994-10-31 Capuchon inviolable pour un fût

Country Status (2)

Country Link
EP (1) EP0725013A1 (fr)
GB (2) GB9322908D0 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823385A1 (fr) * 1996-08-09 1998-02-11 Moss Plastic Parts Limited Fermeture pour un fût à bière
GB2319019A (en) * 1996-11-06 1998-05-13 Rankin Brothers & Sons Tamper Proof Seal
WO2001038177A2 (fr) * 1999-11-19 2001-05-31 Rieke Corporation Couvercle de surbouchage inviolable pour fut
FR2828678A1 (fr) * 2001-07-31 2003-02-21 Repsol Butano Sa Capuchon de protection pour soupape de conteneur de gaz sous pression
WO2005056411A1 (fr) * 2003-12-05 2005-06-23 American Flange & Mfg Co Inc Bouchon de fermeture et capsule de garantie
WO2007032698A2 (fr) * 2005-09-13 2007-03-22 Mobi Sp. Z.O.O. Boite de protection pour fermeture de recipient
WO2008139196A1 (fr) 2007-05-14 2008-11-20 Greif International Holding Bv Capsules de bouchage
US8061543B2 (en) 2008-02-08 2011-11-22 Rieke Corporation Plastic plug with overcap, including wrench and method
WO2013184081A1 (fr) * 2012-06-06 2013-12-12 Kozlov Viacheslav Couvercle de fermeture de récipient
US10315808B2 (en) 2015-10-28 2019-06-11 Greif International Holding Bv Container closure cap and container closure
WO2020257920A1 (fr) 2019-06-27 2020-12-30 First Element Packaging Inc. Récipient de fluide pouvant être mis sous pression et surface de distribution associée
USD963811S1 (en) 2019-05-28 2022-09-13 Rieke Llc Tamper evident overcap for drum closures

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161565A2 (fr) * 1984-05-14 1985-11-21 Klaus Boetzkes Capuchon de fermeture
EP0189346A2 (fr) * 1985-01-23 1986-07-30 ASTRAPLASTIQUE Société Anonyme Dispositif de fermeture pour bouteille comprenant un bouchon à visser
US4712705A (en) * 1987-01-30 1987-12-15 Stoffel Seals Corporation Tamper indicating cap seal for container valves
US4779750A (en) * 1986-12-19 1988-10-25 Arlco Pty. Limited Beer keg cap
EP0324573A1 (fr) * 1988-01-11 1989-07-19 Dansk Bakelit Industri A/S Couvercle de protection pour des soupapes de décharge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161565A2 (fr) * 1984-05-14 1985-11-21 Klaus Boetzkes Capuchon de fermeture
EP0189346A2 (fr) * 1985-01-23 1986-07-30 ASTRAPLASTIQUE Société Anonyme Dispositif de fermeture pour bouteille comprenant un bouchon à visser
US4779750A (en) * 1986-12-19 1988-10-25 Arlco Pty. Limited Beer keg cap
US4712705A (en) * 1987-01-30 1987-12-15 Stoffel Seals Corporation Tamper indicating cap seal for container valves
EP0324573A1 (fr) * 1988-01-11 1989-07-19 Dansk Bakelit Industri A/S Couvercle de protection pour des soupapes de décharge

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823385A1 (fr) * 1996-08-09 1998-02-11 Moss Plastic Parts Limited Fermeture pour un fût à bière
EP0950613A1 (fr) * 1996-08-09 1999-10-20 Moss Plastic Parts Limited Fermeture
GB2319019A (en) * 1996-11-06 1998-05-13 Rankin Brothers & Sons Tamper Proof Seal
GB2319019B (en) * 1996-11-06 1998-11-04 Rankin Brothers & Sons Tamper-proof seal
CZ298864B6 (cs) * 1999-11-19 2008-02-27 Rieke Corporation Komplexní plastové zaklapovací krycí víko
WO2001038177A3 (fr) * 1999-11-19 2002-01-24 Rieke Corp Couvercle de surbouchage inviolable pour fut
EP1237788A2 (fr) * 1999-11-19 2002-09-11 Rieke Corporation Couvercle de surbouchage inviolable pour fut
EP1237788A4 (fr) * 1999-11-19 2003-10-01 Rieke Corp Couvercle de surbouchage inviolable pour fut
WO2001038177A2 (fr) * 1999-11-19 2001-05-31 Rieke Corporation Couvercle de surbouchage inviolable pour fut
FR2828678A1 (fr) * 2001-07-31 2003-02-21 Repsol Butano Sa Capuchon de protection pour soupape de conteneur de gaz sous pression
WO2005056411A1 (fr) * 2003-12-05 2005-06-23 American Flange & Mfg Co Inc Bouchon de fermeture et capsule de garantie
WO2007032698A2 (fr) * 2005-09-13 2007-03-22 Mobi Sp. Z.O.O. Boite de protection pour fermeture de recipient
WO2007032698A3 (fr) * 2005-09-13 2007-05-03 Mobi Sp Z O O Boite de protection pour fermeture de recipient
WO2008139196A1 (fr) 2007-05-14 2008-11-20 Greif International Holding Bv Capsules de bouchage
US8813988B2 (en) 2007-05-14 2014-08-26 Greif International Holding B.V. Closure caps
US9434518B2 (en) 2007-05-14 2016-09-06 Greif International Holding B.V. Closure caps
US9790009B2 (en) 2007-05-14 2017-10-17 Greif International Holding B.V. Closure caps
US8061543B2 (en) 2008-02-08 2011-11-22 Rieke Corporation Plastic plug with overcap, including wrench and method
US8066139B2 (en) 2008-02-08 2011-11-29 Rieke Corporation Plastic plug with overcap, including wrench and method
WO2013184081A1 (fr) * 2012-06-06 2013-12-12 Kozlov Viacheslav Couvercle de fermeture de récipient
US10315808B2 (en) 2015-10-28 2019-06-11 Greif International Holding Bv Container closure cap and container closure
USD963811S1 (en) 2019-05-28 2022-09-13 Rieke Llc Tamper evident overcap for drum closures
WO2020257920A1 (fr) 2019-06-27 2020-12-30 First Element Packaging Inc. Récipient de fluide pouvant être mis sous pression et surface de distribution associée
EP3990358A4 (fr) * 2019-06-27 2023-11-08 First Element Packaging Inc. Récipient de fluide pouvant être mis sous pression et surface de distribution associée

Also Published As

Publication number Publication date
GB9402004D0 (en) 1994-03-30
GB9322908D0 (en) 1993-12-22

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