EP0481981A1 - Linerless closure for carbonated beverage container. - Google Patents

Linerless closure for carbonated beverage container.

Info

Publication number
EP0481981A1
EP0481981A1 EP89907042A EP89907042A EP0481981A1 EP 0481981 A1 EP0481981 A1 EP 0481981A1 EP 89907042 A EP89907042 A EP 89907042A EP 89907042 A EP89907042 A EP 89907042A EP 0481981 A1 EP0481981 A1 EP 0481981A1
Authority
EP
European Patent Office
Prior art keywords
closure
container
rib
neck
contiguous
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.)
Granted
Application number
EP89907042A
Other languages
German (de)
French (fr)
Other versions
EP0481981A4 (en
EP0481981B1 (en
EP0481981B2 (en
Inventor
Rodney Malcolm Druitt
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.)
Closures and Packaging Services Ltd
Original Assignee
MK Plastics Pty Ltd
Precision Valve Australia Pty 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25624087&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0481981(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MK Plastics Pty Ltd, Precision Valve Australia Pty Ltd filed Critical MK Plastics Pty Ltd
Priority claimed from AU37737/89A external-priority patent/AU627746B2/en
Publication of EP0481981A4 publication Critical patent/EP0481981A4/en
Publication of EP0481981A1 publication Critical patent/EP0481981A1/en
Publication of EP0481981B1 publication Critical patent/EP0481981B1/en
Application granted granted Critical
Publication of EP0481981B2 publication Critical patent/EP0481981B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
    • 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
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1672—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by manual actuation of the closure or other element
    • B65D51/1688—Venting occurring during initial closing or opening of the container, by means of a passage for the escape of gas between the closure and the lip of the container mouth, e.g. interrupted threads
    • 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

Definitions

  • a closure for a container having an externally screw threaded neck said closure being moulded in one piece from a resilient plastics material and comprising a top and a depending skirt which has on its internal surface a complementary screw thread, characterised in that an annular sealing rib projects downwardly from the top, the rib includes a first substantially cylindrical portion contiguous with the top and lying adjacent to or abutting with the skirt and a second, frusto-conical, portion contiguous with the end of the first portion distal to the top and extending radially inwardly to terminate in a circular free edge, the internal diameter of the first portion being equal to or only slightly larger than the external diameter of the neck of the container to which the closure is to be attached such that, during threaded engagement of the cap with the neck, the second, frusto-conical, portion will be engaged by a free end of the neck and folded back against the first, substantially cylindrical portion of the rib and to form
  • the cap is modified (not illustrated) for containers not finished with an Alcoa step.
  • the inner diameter at the skirt and the thread dimensions must provide a secure engagement with the container thread.
  • the inner dimension of the first portion 7 of the sealing rib 6 is preselected to be equal to, or slightly greater than, the external diameter of the container neck at the opening.

Abstract

Un couvercle (1) pour un récipient ayant un col (9) extérieurement vissé est moulé en une seule pièce en une matière plastique souple. Le couvercle (1) comprend une partie supérieure (4) avec une lisière (2) pourvue sur sa surface interne d'un filetage complémentaire (3). Une nervure annulaire d'étanchéité (6) qui s'étend vers le bas depuis la partie supérieure (4) du couvercle (1) comprend une première partie essentiellement cylindrique (7), adjacente à la partie supérieure (4) et adjacente à ou butant contre la lisière (2), et une deuxième partie tronconique (8), adjacente à l'extrémité de la première partie (7) distale par rapport à la partie supérieure (4), qui s'étend radialement vers l'intérieur et se termine par un bord circulaire libre. Le diamètre interne de la première partie (7) est égal ou légèrement supérieur au diamètre externe du col (9) du récipient sur lequel le couvercle doit être fixé de sorte que lorsque le couvercle (1) est vissé sur le col (9), la deuxième partie tronconique (8) sera mise en prise par une extrémité libre du col (9) et repliée en arrière contre la première partie (7) essentiellement cylindrique de la nervure (6), formant une fermeture étanche aux gaz entre le col (9) du conteneur et le couvercle (1).A cover (1) for a container having an externally screwed neck (9) is molded in one piece from a flexible plastic material. The cover (1) comprises an upper part (4) with a selvedge (2) provided on its internal surface with a complementary thread (3). An annular sealing rib (6) which extends downwards from the upper part (4) of the cover (1) comprises a first essentially cylindrical part (7), adjacent to the upper part (4) and adjacent to or abutting against the edge (2), and a second frustoconical part (8), adjacent to the end of the first part (7) distal to the upper part (4), which extends radially inwards and ends with a free circular edge. The internal diameter of the first part (7) is equal to or slightly greater than the external diameter of the neck (9) of the container on which the cover is to be fixed so that when the cover (1) is screwed onto the neck (9), the second frustoconical part (8) will be engaged by a free end of the neck (9) and folded back against the first cylindrical part (7) of the rib (6), forming a gas-tight closure between the neck ( 9) of the container and the cover (1).

Description

LINERLESS CLOSURE FOR CARBONATED BEVERAGE CONTAINER
FIELD OF THE INVENTION This invention relates to caps for sealing the opening of screw top containers. In particular, the invention provides a screw top cap which seals bottles of carbonated . liquid such as softdrinks but is well adapted to seal other containers such as glass or PET containers with contents at above or below atmospheric pressure or having gaseous components or requiring a hermatic seal.
Screw top caps have been used for some time to seal various containers. Although many screw tops include a separate sealing wad within the cap, there is substantial advantage to be had in producing a one-piece cap which still effectively seals the container.
PRIOR ART Such a one piece cap is shown in the British patent 788148 (3 August 1956) which includes a continuous lip within the top portion of the cap positioned to engage against the annular end face of the opening and provide a seal between the lip and the free end edge of the container with the lip curling over at its free edge. However, this cap provides a seal only against the free end edge of the container.
Australian application 15456/76 (30 June 1976) discloses an alternative one-piece cap in which a annular lip extends from the inside top of the cap and engages the inner bore of a container opening so as to curl the free end of the lip in against the bore or inside surface of the opening. However, with this cap, effective sealing requires that the inside bore of the opening be of accurate and consistent dimensions. Furthermore, if aerated or other gaseous liquid is to be contained, gas pressure will tend to distort the lip and cause a seal f ilure .
Australian patent application 14180/83 (5 May 1983) describes a cap with two internal sealing structures. One of the structures is an annular shaped outer portion shaped to accept the outer peripheral edge of the free end of the container relying upon the pressure generated during the closing of the cap to seal against this outer edge. Further provided is an inner cylindrical lip to engage the inner bore of the container opening.
SUMMARY OF THE PRESENT INVENTION According to the present invention there is provided a closure for a container having an externally screw threaded neck, said closure being moulded in one piece from a resilient plastics material and comprising a top and a depending skirt which has on its internal surface a complementary screw thread, characterised in that an annular sealing rib projects downwardly from the top, the rib includes a first substantially cylindrical portion contiguous with the top and lying adjacent to or abutting with the skirt and a second, frusto-conical, portion contiguous with the end of the first portion distal to the top and extending radially inwardly to terminate in a circular free edge, the internal diameter of the first portion being equal to or only slightly larger than the external diameter of the neck of the container to which the closure is to be attached such that, during threaded engagement of the cap with the neck, the second, frusto-conical, portion will be engaged by a free end of the neck and folded back against the first, substantially cylindrical portion of the rib and to form a gas-tight seal between the neck of the container and the closure.
Preferably the plastics material is high density polyethylene, low density polyethylene, or polypropylene. Where the container is to be used for gaseous liquids, the plastics material must have a very low porosity to the gas. Preferably the rib is shaped and sized so that, during the threaded engagement of the closure with the container, the free edge of the rib contacts an inner surface of the top, or the surface of structure contiguous with the top, before the closure is fully engaged and such that the rib in the region proximal the free edge is pinched between the free end of the neck of the container and the top of the closure, or the structure contiguous with the top of the closure, when the closure is fully engaged with the container.
Preferably the first substantially cylindrical and second frusto-conical portions of the lip join at an included angle of at least 90 . It is also preferred that the rib is of a thickness tapering from a maximum thickness proximal the top to a minimum thickness at its annular free edge.
It is also preferred that the first substantially cylindrical and second frusto-conical portions of the lip smoothly join with an internal radius of from 0.1mm to 0.5mm, most preferably 0.2mm. It is further preferred that the cross-sectional thickness of the rib proximate the join between the first and second portions is from 0.4m to 0.8m, most preferably approximately 0.6mm. Where the closure is adapted to seal a container with an Alcoa step finish, the first substantially cylindrical portion of the sealing rib joins the top spaced radially inwardly from the skirt so as to define a space of annular cross-section between the rib and skirt. Where the container neck has a standard finish the rib is closely spaced from, or contiguous with, the skirt.
BRIEF DESCRIPTION OF THE DRAWINGS An exemplary embodiment of the invention will now be described with reference to the drawings which show: Fig. 1 an embodiment of the present invention in sectioned elevation;
Fig. 2 the embodiment of Fig. 1 screwed onto a suitable container shown in sectional elevation; and Fig. 3 an alternative embodiment in sectional elevation.
PREFERRED EMBODIMENTS Fig. 1 shows a cap 1 which is in many aspects a conventional screw top cap for a bottle to be used in containing a carbonated beverage. The cap 1 includes a continuous cylindrical sidewall 2 with a thread 3 formed on its interior surface. The top end of the cap 1 is closed by a top 4 which joins the skirt 2 in a continuous circular perimeter. The top 4 and skirt 2 being formed integrally from high density polyethylene by injection moulding.
The cap differs from known caps in that it includes an annular rib 6 which extends from the interior surface of the top 4 concentrically of the cap 1, being positioned close to the skirt 2. The annular sealing rib 6 includes a first or root portion 7 which extends from the top 4 approximately parallel to the skirt 2 with a second portion 8 extending from the end of the first portion 7 tapering inwardly and away from the end wall 8.
The cap 1 can be seen in Fig. 2 screwed onto the screw top end 9 of a container not fully shown in the drawing. The end 9 of the container is finished with an "Alcoa step" 10 at the outer periphery of its open end extremity. The Alcoa step 10 allows a space between the end 9 of the container and the inner surface of the skirt 2 of the cap 1. The size of this annular space is sufficient to allow the second portion 8 of the outer rib 6 to contact the end 9 of the container as the cap 1 is being screwed onto the container, and for the second portion 8 to fold up on itself and against the root portion 7 and structure integral with the top 4. Thus there is formed a continuous gas tight seal between the cap 1 and the container extending from the Alcoa step 10 to the end surface of the container. There is no need of a separate seal inserted into the cap 1 prior to its application to the container as is common in the art. As the cap 1 is attached in the above described manner, the second portion 8 of the sealing rib 6 is deformed by being bent towards the top 4. The deformation continues and contact is made between the second portion 8 of the sealing rib 6 and an inner rib 5 which effectively extends the structure of the top 4. The inner rib 5 in fact is not essential to the invention and can be dispensed with if the other components are suitably modified so that the end portion 8 contacts the top 4 during this deformation.
Once the second portion 8 has contacted the inner rib 5 (or top 4) further movement attaching the cap 1 will press and grip the contacting part of the second portion 8 between the container end 9 and the top 4. As the movement attaching the cap 1 continues, it tends to pinch the free edge of rib 6 between the container and the top 4 and to "pull" the first portion 7 of the outer rib tightly in towards the container end 9 to produce a tight seal about the curved edge surface of the container end 9 extending from its extreme end annular surface 11 to the Alcoa step region 10.
In the preferred embodiment shown in the drawings, an annular gap 12 is formed between the outer rib 6 and the skirt 7, proximate the top 4. This is one means of accommodating the Alcoa step 10 and allowing the necessary movement of the outer rib 6 during application of the cap 1 to a container end 9. The dimensions of the outer rib 6, in conjunction with the design shape of the rib 6 and its material of construction, will clearly influence the effectiveness of the cap 1. Not only the sealing effectiveness but also the mouldability, removal torque, reusability and consistency are important. For the high density polyethelene cap shown in the drawings, the inner radius joining the first and second portions 7 and 8 of the outer rib 6 is 0.2mm, the outer radius 0.5mm and the cross-sectional thickness approximately 0.6mm (slightly tapered for mould removal) .
The alternative embodiment of Fig. 3 has a very much smaller inner rib 5 but is otherwise substantially the same as the embodiment of Fig. 1 and 2.
The cap is modified (not illustrated) for containers not finished with an Alcoa step. Importantly, the inner diameter at the skirt and the thread dimensions must provide a secure engagement with the container thread. Further the inner dimension of the first portion 7 of the sealing rib 6 is preselected to be equal to, or slightly greater than, the external diameter of the container neck at the opening. Some radial flex should be provided in the sealing rib 6 so that on application of the cap to the container the second portion 8 can uniformly bend back onto the first portion 7.

Claims

CLAIMS :
1. A closure for a container having an externally screw threaded neck, said closure being moulded in one piece from a resilient plastics material and comprising a top and a depending skirt which has on its internal surface a complementary screw thread, characterised in that an annular sealing rib projects downwardly from the top, the rib includes a first substantially cylindrical portion contiguous with the top and lying adjacent to or abutting with the skirt and a second, frusto-conical, portion contiguous with the end of the first portion distal to the top and extending radially inwardly to terminate in a circular free edge, the internal diameter of the first portion being equal to or only slightly larger than the external diameter of the neck of the container to which the closure is to be attached such that, during threaded engagement of the closure with the neck, the second, frusto-conical, portion will be engaged by a free end of the neck and folded back against the first, substantially cylindrical portion of the rib and to form a gas-tight seal between the neck of the container and the closure.
2. A closure as defined in claim 1 wherein during said threaded engagement interaction between the rib and the neck of the container will cause said rib, while folding back, to contact an inner surface portion of the top or of structure contiguous with the top to provide a gas-tight seal with the container.
3. A closure as defined in claim 1 wherein the shape, size and material of construction of said rib is selected such that, during attachment of said closure to a container, said rib is frictionally engaged between said free end of the container neck and a surface portion of the top once mutual contact is made so that final movement of said closure draws a portion of the rib adjacent an outer top surface of the container tightly against said top surface of the container so as to form a continuous seal from said top surface to a cylindrical side surface of the container neck.
4. A closure as defined in claim 2 wherein said surface portion is defined by part of a second continuous annular rib being contiguous with the end wall.
5. A closure as defined in claim 4 wherein the second rib extends radially inwardly and away from said top and is tapered in cross-section.
6. A closure as defined in claim 5 wherein, upon attachment of said closure to a said container, said second rib is deformed by being bent towards said top subsequent said contact with said sealing rib.
7. A closure as defined in claim 6 wherein said cylindrical portion joins said top radially displaced from said skirt so as to define a generally annular gap between said cylindrical portion and said top.
8. A closure as defined in claim 1 wherein said rib is tapered in cross-section so as to allow ejection of the closure from an injection mould.
9. A closure as defined in claim 2 wherein the shape, size and material of construction of said rib is selected such that, during attachment of said closure to a container, said rib is frictionally engaged between said free end of the container neck and a surface portion of the top once mutual contact is made so that final movement of said closure draws a portion of the rib adjacent an outer top surface of the container tightly against said top surface of the container so as to form a continuous seal from said top surface to a cylindrical side surface of the container neck.
10. A. closure as defined in claim 3 wherein said surf ce portion is defined by part of a second continuous annular rib being contiguous with the end wall.
11. A closure as defined in claim 9 wherein said surface portion is defined by part of a second continuous annular rib being contiguous with the end wall.
12. A closure as defined in claim 11 wherein said cylindrical portion joins said top radially displaced from said skirt so as to define a generally annular gap between said cylindrical portion and said top.
EP89907042A 1988-06-17 1989-06-15 Linerless closure for carbonated beverage container Expired - Lifetime EP0481981B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AU8846/88 1988-06-17
AUPI884688 1988-06-17
AU884688 1988-06-17
PCT/AU1989/000256 WO1989012584A1 (en) 1988-06-17 1989-06-15 Linerless closure for carbonated beverage container
AU37737/89A AU627746B2 (en) 1988-06-17 1989-06-15 Linerless closure for carbonated beverage container

Publications (4)

Publication Number Publication Date
EP0481981A4 EP0481981A4 (en) 1991-03-06
EP0481981A1 true EP0481981A1 (en) 1992-04-29
EP0481981B1 EP0481981B1 (en) 1994-08-31
EP0481981B2 EP0481981B2 (en) 1999-11-17

Family

ID=25624087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89907042A Expired - Lifetime EP0481981B2 (en) 1988-06-17 1989-06-15 Linerless closure for carbonated beverage container

Country Status (2)

Country Link
EP (1) EP0481981B2 (en)
WO (1) WO1989012584A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644125A1 (en) 1993-09-22 1995-03-22 Jacques Perchepied Closure cap

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638972A (en) * 1988-06-17 1997-06-17 Druitt; Rodney Malcolm Linerless closure for carbonated beverage container
EP0460813A3 (en) * 1990-05-25 1992-03-11 Tredegar Molded Products Company Threaded closure with integral sealing means
ES2048060B1 (en) * 1991-10-01 1995-07-01 Druitt Titular Del 50 Rodney M LID WITHOUT INTERIOR COATING FOR CARBONIC BEVERAGE CONTAINER.
EG21314A (en) * 1992-07-16 2000-10-31 Driutt Rodney Malcolm Tamper evident closure
SE501925C2 (en) * 1993-09-24 1995-06-19 Kabi Pharmacia Ab Containers for medical fluids and procedures for their sealing
NL9402151A (en) * 1994-12-19 1996-08-01 Johannes Antonius Maria Van Cr Combination of a bottle and a cap as well as a bottle and cap intended for this combination.
WO2006097151A2 (en) 2005-03-14 2006-09-21 Creanova Universal Closures Ltd. Closure
EP1799573B1 (en) * 2004-09-01 2008-12-10 Creanova Universal Closures Ltd. Closure
AU2005331483B2 (en) 2004-09-01 2012-02-16 Creanova Universal Closures Ltd. Sealing means for a closure, closure and process
PL2663506T3 (en) 2011-01-14 2016-03-31 Creanova Universal Closures Ltd Closure
US10532858B2 (en) 2017-09-06 2020-01-14 Creanova Universal Closures Ltd. Closure for container neck finishes

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200981A (en) † 1961-10-03 1965-08-17 Wicanders Korkfabriker Ab Bottle caps
US3203571A (en) * 1960-12-06 1965-08-31 Robert L Plunkett Self sealing cap construction
AU417081B2 (en) † 1965-10-23 1971-09-13 Kouichihayashida Bottle-stopper
AU433268B2 (en) † 1967-12-22 1973-03-02 Reflex Corporation Of Canada Limited Safety cap and container
US3780897A (en) † 1970-02-18 1973-12-25 V Wassilieff Stoppers
AU501052B2 (en) † 1974-10-02 1979-06-07 Te. Chill Search Limited Two-to-four wire converter
US4349116A (en) † 1978-12-07 1982-09-14 Ethyl Products Company Thermoplastic screw-threaded closure cap
US4398645A (en) † 1981-06-29 1983-08-16 Thurston Toeppen Closure for pressurized containers
US4450973A (en) * 1982-09-28 1984-05-29 Thurston Toeppen Closure for pressurized containers
AU561051B2 (en) † 1983-10-29 1987-04-30 Metal Box Plc One-piece sealing closure
AU570997B2 (en) † 1983-08-26 1988-03-31 Metal Closures Ltd. Sealing closure with flexible fin

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
GB1499895A (en) * 1974-06-07 1978-02-01 Mack Wayne Plastics Co Container and cap combination
FR2391926A2 (en) * 1976-02-03 1978-12-22 Grussen Jean IMPROVED SEALING SCREW CAPSULE AND MANUFACTURING MOLD
US4069937A (en) * 1977-01-28 1978-01-24 Owens-Illinois, Inc. Linerless closure
EP0109631A3 (en) * 1982-11-17 1985-07-31 Walter Wiedmer Thread closure of elastic material for a container

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203571A (en) * 1960-12-06 1965-08-31 Robert L Plunkett Self sealing cap construction
US3200981A (en) † 1961-10-03 1965-08-17 Wicanders Korkfabriker Ab Bottle caps
AU417081B2 (en) † 1965-10-23 1971-09-13 Kouichihayashida Bottle-stopper
AU433268B2 (en) † 1967-12-22 1973-03-02 Reflex Corporation Of Canada Limited Safety cap and container
US3780897A (en) † 1970-02-18 1973-12-25 V Wassilieff Stoppers
AU501052B2 (en) † 1974-10-02 1979-06-07 Te. Chill Search Limited Two-to-four wire converter
US4349116A (en) † 1978-12-07 1982-09-14 Ethyl Products Company Thermoplastic screw-threaded closure cap
US4398645A (en) † 1981-06-29 1983-08-16 Thurston Toeppen Closure for pressurized containers
US4450973A (en) * 1982-09-28 1984-05-29 Thurston Toeppen Closure for pressurized containers
AU570997B2 (en) † 1983-08-26 1988-03-31 Metal Closures Ltd. Sealing closure with flexible fin
AU561051B2 (en) † 1983-10-29 1987-04-30 Metal Box Plc One-piece sealing closure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8912584A1 †

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644125A1 (en) 1993-09-22 1995-03-22 Jacques Perchepied Closure cap

Also Published As

Publication number Publication date
EP0481981A4 (en) 1991-03-06
WO1989012584A1 (en) 1989-12-28
EP0481981B1 (en) 1994-08-31
EP0481981B2 (en) 1999-11-17

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