US3613929A - Safety closure with seal - Google Patents

Safety closure with seal Download PDF

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Publication number
US3613929A
US3613929A US1276A US3613929DA US3613929A US 3613929 A US3613929 A US 3613929A US 1276 A US1276 A US 1276A US 3613929D A US3613929D A US 3613929DA US 3613929 A US3613929 A US 3613929A
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United States
Prior art keywords
closure
neck
lugs
sockets
formations
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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.)
Expired - Lifetime
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US1276A
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English (en)
Inventor
Eugene J Treanor
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Individual
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Individual
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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
    • 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
    • B65D41/06—Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating
    • B65D41/065—Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating with integral internal sealing means
    • 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
    • B65D41/28—Caps combined with stoppers

Definitions

  • the aim of the invention is to provide a closure, together with the complementary neck of a container, which can cooperate together to provide a-leakproof seal, the closure being formed as a unitary whole.
  • the arrangement may also be such that the closure is childproof, that is the closure is difficult for a child to remove while being possible for an adult to remove.
  • a closure and the neck of a container comprising a top, a flange depending from the periphery of the top, and securing formations on the inside of the flange, and the neck being of tubular shape and having complementary securing formations on the outside thereof, the formations being such as to enable the closure to be releasably mounted in a closed position on the neck so as to close the neck, the closure and neck being characterized in that the closure has a flexible and resilient skirt integral with the top and depending from it inside the flange, at least the lower part of the skirt being divided to form an inner layer and an outer layer, the neck entering between the layers of the skirt when the closure is placed on the neck, and the outer layer being trapped between the neck and the top of the closure when the closure is in its closed position so as to form a positive liquidtight seal, and the inner layer entering the neck when the closure is placed on the neck, and forming a second seal when the closure is in its closed position.
  • the neck of the container may be formed integrally with the container or may comprise a separately formed component secured or adapted to be secured to the container.
  • FIG. I is a side view of a closure and a container embodying the invention, the closure having been removed from the container;
  • FIG. 2 is a section, to a much larger scale, along the line 2- 2 of FIG. 1;
  • FIG. 3 is similar to FIG. 2 but includes the adjacent part of the closure in its closed position
  • FIG. 4 is a somewhat diagrammatic section, to a rather smaller scale, along a curved plane including the line 44 of FIG. 3;
  • FIG. 5 is similar to FIG. 4 but shows the parts in different relative positions
  • FIG. 6 is a side view of the neck of a modified form of container
  • FIG. 7 is a view from below of the closure for use with the modified form of container shown in FIG. 6;
  • FIG. 8 is a section, to a larger scale, along the line 8-8 of FIG. 7;
  • FIG. 9 is a view, to a larger scale, in the direction of the arrow 9 in FIG. 7;
  • FIG. 10 is a diagrammatic view, similar to FIGS. 4 and 5, but illustrating a further modification.
  • FIG. 1 shows a closure 11 and a container 12.
  • the closure 11 is formed as a unitary moulding from a plastics material such as polypropylene which is adequately stiff in thick section but which is flexible and resilient in thin section.
  • the container 12 is also formed as a unitary moulding from a plastics material, but as there is no need for flexibility or resilience the container is preferably made from a more rigid material such as polystyrene.
  • the container 12 may conveniently be transparent or translucent.
  • the container 12 is intended for housing solids, powders or liquids such as medicines which it is desired to keep from children.
  • closure 11 and container 12 which cooperate in such a manner that the closure can be placed on the container and rotated in one direction to a closed position in which the container is sealed.
  • the closure In order to remove the closure it is necessary to rotate the closure 1 l in the reverse direction; but the application'of torque above is insufficient to enable the closure to be removed as the closure 11 reaches a first locking position such that it cannot be further rotated in the direction necessary for its removal. It is then necessary to push the closure 11 downwards, that is towards the bottom of the container 12, against the action of resilient means, before the closure 11' can be further rotated towards its released position.
  • the closure 11 has a circular top 13 with a depending peripheral flange 14. Radial fins 15 are provided for decorative purposes, also strengthen the closure and to enable the users fingers to grip the closure and rotate it.
  • the closure has four sets of formations integrally formed with it and spaced at uniform intervals around it. Each set is similar to the others and one set is shown in FIGS. 3, 4 and 5.
  • This comprises a lug 16 which constitutes a locking formation, and a flexible and resilient blade 17. As can be seen from FIG. 3 the lug 16 projects inwards from the flange 14, while the blade 17 depends from the top 13 closely adjacent to the flange 14 but separated from it.
  • the formations 16 and 17 cooperate with complementary undercut formations 18 on the outside of the neck of the container 12, the neck being that part of the container around the open mouth of the container.
  • the shape of each formation 18 can be seen in FIGS. 4 and 5.
  • Each formation 18 has a lower surface for cooperation with the associated lug 16.
  • This surface presents a stop 19; a portion 20 shaped like a partial screw thread and at the same inclination as the top of the lug 16; a first socket 21 bounded by an inclined portion 22, a top 23 and a vertical wall 24; a second socket 25 similar to the first socket 21 and bounded by an inclined portion 26, a top 27 and a vertical wall 28; and an inclined lead-in portion 29.
  • Between the portions 20 and 22 is a small pip 30 which the lug can ride over when the closure is rotated by the user, but which prevent the lug inadvertently leaving the portion 20 which it engages when the closure is in its closed position as shown in FIG. 4. Without the pip 30 there might be a risk of the closure starting to leave its closed position if the container and closure were subjected to vibration.
  • the upper surface of the formation is largely flat but is provided with two triangular humps 31.
  • the upper surface cooperates with the blade 17.
  • the lug 16 On the application of torque along to the closure, the lug 16 abuts the verti cal wall 24 and further rotation of the closure in that direction is prevented. It is then necessary to push the closure downwards, so that the blade 17 is further flexed and the lug is removed from the socket 21. Further rotation of the closure is then possible. The lug 16 enters the second locking socket 25 unless the downward force on the closure is maintained. If the lug 16 does enter the socket 25 it is again necessary to apply a downward force to remove it. While the lug 16 is in, or close to the socket 25 the blade 17 is stressed by its engagement with the second of the humps 31. Finally the lug passes beneath the portion 29 so that the closure can be removed.
  • the humps 31 may be omitted, the flat upper surface of the formation 18 being sufficiently high to stress the blade 17 adequately.
  • the locking sockets could be entirely omitted, and the whole of the lower surfaces of the formations 18 could be shaped as parts of screw threads, that is they could be gradually inclined like the portion 20.
  • a pip like the pip 30 would however preferably be provided.
  • the blade 17 might be replaced by fingers of circular cross section, and there might be a ring of blades or fingers around the whole of the lid of the closure so that there are always blades or fingers engaging the top of the formations l8, and a continuous upward force would be applied to the closure. Nevertheless, as there is a tendency for plastics material to acquire a permanent set if they have been retained in stressed positions for long periods, it is particularly desirable to ensure that at least some of the blades or fingers are only stressed, or are additionally stressed, when the closure is moved from its closed position. In the arrangement illustrated it will be noted that the blade 17 in FIG. 4 is entirely unstressed so that even if the closure remains closed for a long period the blade is fully operative as soon as an attempt is made to remove the closure.
  • the closure 11 is also formed with means which afford a seal.
  • This comprises an annular skirt 32 integral with the top 13 of the closure and depending from it inside the flange 14.
  • the lower part of the skirt 32 is divided to form an inner layer 33 and an outer layer 34. In its unstressed position the skirt is the same shape as that shown in FIG. 8.
  • the inner layer 33 enters the mouth of the container, and to this end it extends vertically downwards and is of slightly smaller external diameter than the internal diameter of the neck of the container.
  • the outer layer 34 initially extends outwards and slightly downwards.
  • the neck enters between the layers 33 and 34, and, as shown in FIG. 3, traps the outer layer 34 against the top 13 of the closure so as to form a positive liquidtight seal.
  • the uppermost part of the neck presents a sealing edge 35 (FIG. 2) which is very much narrower than the remainder of the neck.
  • the outer part of the top 13 is stepped downwards, as clearly shown at 36 in FIG. 3, to provide an abutment surface 37 which is lower than the undersurface of the remainder of the top 13.
  • each hole is formed in the port 36 of the top 13, one hole being above each of the lugs 16 so as to enable a moulding tool to enter the closure and define the upper surface of the lug 16.
  • the edges of one such hole are indicated by the broken lines 38.
  • Each hole extends between two of the fins l5, and the presence of the fins renders the holes less noticeable.
  • the extent to which the outer layer 34 is trapped by the edge 35 is determined by the position of the stop 19. If the stop is not present, and the portion 20 of the lower surface of the formation 18 is extended there may be difficulty in controlling the extent to which the container is sealed. This may be satisfactory in some circumstances, but in most circumstances it is desirable to provide the stop 19 or its equivalent.
  • the skirt 32 may be shaped somewhat differently in that the division between the layers may extend substantially to the top 13 of the closure.
  • the outer layer 34 exerts a downward force on the container, and this assists the blades 17 in urging the lugs 16 into the sockets 21 or 25. It also continues to bear on the neck of the container when the lugs are in either of the sets of sockets, and thus continues to provide a seal, although this is considerably less tight than that formed when the closure is in its closed position.
  • the plastic material may acquire a pennanent set, so that after prolonged closure the skirt may not return to its original shape for some time after the closure is removed.
  • the blade 17 or their equivalent then have to act as the sole spring means.
  • the skirt may be shaped initially to conform more closely to the shape shown in FIG. 3 so that it never acts as spring means to urge the lugs 16 into the locking sockets 21 and 25.
  • the container and closure shown in FIGS. 6 to 10 is generally similar to that shown in FIGS. 1 to 5, and only the differences between the two types will be described in detail.
  • the container differs from the container 12 only in that the formations 18 are replaced by formations 41 each of which has only a single locking socket 42 and no pip 30. It also has a single hump 43 at the top.
  • the closure 44 differs from the closure 11 in that the fins 15 are omitted and are replaced by recesses 45 in the depending flange 46. Further, the step 36 is omitted and is replaced by an annular rib 47. There is also a strengthening rib 48 on the upperside of the top 49 of the closure.
  • the formations on the closure 44 comprise lugs 50, like the lugs 16, and cams 51 which replace the blades 17. The cams are rigid and stem from the flange 46. Each cam 51 is shaped as shown in FIG. 9 and cooperates with the upper surface of the as sociated formation 41 in a manner similar to that described above with reference to FIGS.
  • cam 51 does not yield so that when it engages the hump 43 it causes the lug 50 to enter the socket 42.
  • the childproof action is therefore more positive than that in the version shown in FIGS. 1 to 5 but suffers from the disadvantage that if the skirt acquires a permanent set the lugs 50 may drop out of the sockets 42. To avoid this difficulty it would be possible to use blades similar to blades 17, or other similar resilient means, in addition to the cams 51.
  • FIGS. 1 to 5 may also be modified by substituting cams for the blades 17.
  • the operation of such a modification is shown in FIG. 10.
  • a cam 52 and the associated lug 16 are shown in two positions: the chain-dotted lines showing their positions when the closure is in its closed position, and the broken lines showing their position when the lug 16 is entering the first locking socket 16.
  • the cams may be used in conjunction with resilient means like the blades 17 or the like.
  • the present invention is related to the invention which is the subject of my British Pat. No. 1,104,001 and some of the containers and closures described above make use of that invention.
  • a closure and the neck of a container comprising a top, a flange depending from the periphery of the top, and securing formations on the inside of the flange, and the neck being of tubular shape and having complementary securing formations on the outside thereof, the formations being such as to enable the closure to be releasably mounted in a closed position on the neck so as to close the neck, the closure and neck being characterized in that the closure has a flexible and resilient skirt integral with the top and depending from it inside the flange, at least the lower part of the skirt being divided to form an inner layer and an outer layer, the neck entering between the layers of the skirt when the closure is placed on the neck, and the outer layer being trapped between the neck and the top of the closure when the closure is in its closed position so as to form a positive liquidtight seal, and the inner layer entering the neck when the closure is placed on the neck, and forming a second seal when the closure is in its closed position.
  • a closure and the neck of a container according to claim 1 in which the uppermost part of the neck presents a sealing edge which is narrower than the remainder of the neck and engages the outer layer of the skirt.
  • a closure and the neck of a container according to claim 1 in which the complementary formations on the closure and the neck cooperate in the manner of a nut and screw.
  • a closure and the neck of a container according to claim 1 in which the complementary formations on the closure and the neck afford lugs and sockets which cooperate in the manner of a bayonet fitting, there being resilient means acting between the closure and the neck to urge the lugs into the sockets, but capable of yielding to allow the lugs to be removed from the sockets so that the closure can then be rotated and removed from the neck, the arrangement being such that when the lugs are in the sockets the closure cannot be rotated by the application of torque alone to a position in which it can be removed from the neck.
  • a closure and the neck of a container according to claim 5 in which the resilient means is at least partially constituted by flexible and resilient elements integral with the closure and disposed between the skirt and the peripheral flange, the elements engaging formations on the outside of the neck at least when the lugs are in the sockets, the elements being deformed and exerting when the lugs are at the mouths of the sockets, a force which is greater than any force which they exert when the closure is in its closed position.
  • a closure and the neck of a container according to claim 5 in which the formations which afford the sockets also afford partial screw threads which are engaged by the lugs when the closure is in its closed position, the lugs having to pass the sockets before the closure can be removed from the neck.
  • a closure and the neck of a container according to claim 8 in which there are stops beyond the partial screw threads which stops are engaged by the lugs when the closure is in its closed position and which prevent additional rotation of the closure relative to the neck.
  • a closure and the neck of a container according to claim 8 in which there are pips between the sockets and the partial screw threads to engage the lugs and prevent the lugs inadvertently leaving their engagement with the partial screw threads.
  • a closure and the neck of a container according to claim 5 in which there are cooperating cam formations on the closure and on the neck such that when the closure is rotated from its closed position the cam formations cooperate to cause the lugs positively to enter the sockets, so that further rotation of the closure preparatory to release of the closure can be effected only after axial movement of the closure against the action of the resilient means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US1276A 1969-01-07 1970-01-07 Safety closure with seal Expired - Lifetime US3613929A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB91869 1969-01-07

Publications (1)

Publication Number Publication Date
US3613929A true US3613929A (en) 1971-10-19

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ID=9712810

Family Applications (1)

Application Number Title Priority Date Filing Date
US1276A Expired - Lifetime US3613929A (en) 1969-01-07 1970-01-07 Safety closure with seal

Country Status (13)

Country Link
US (1) US3613929A (de)
BE (1) BE744068A (de)
BR (1) BR7015847D0 (de)
CA (1) CA946329A (de)
CS (1) CS152468B2 (de)
DE (1) DE2000413C3 (de)
DK (1) DK137716B (de)
ES (1) ES375217A1 (de)
FR (1) FR2027855A1 (de)
GB (1) GB1302201A (de)
IL (1) IL33670A0 (de)
NL (1) NL7000176A (de)
RO (1) RO55237A (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749270A (en) * 1970-05-25 1973-07-31 L Affleck Safety closure for a container
US4811857A (en) * 1987-06-17 1989-03-14 Tri-Tech Systems International Inc. Closure system and method of forming and using same
US4823967A (en) * 1987-06-10 1989-04-25 Tri-Tech Systems International Inc. Closure for container and method for forming the closure
US4856667A (en) * 1987-06-17 1989-08-15 Tri-Tech Systems International Inc. Container and cap
US4872304A (en) * 1985-12-12 1989-10-10 Tri-Tech Systems International Inc. Closure cap with a seal and method of and apparatus for forming such closure and seal
US4886947A (en) * 1987-06-17 1989-12-12 Tri-Tech Systems International, Inc. Closure system and method of forming and using same
US4925617A (en) * 1987-06-10 1990-05-15 Tri-Tech Systems International, Inc. Method of forming a closure cap with a seal
US5100009A (en) * 1989-05-03 1992-03-31 Tri-Tech Systems International Inc. Closure and access systems for containers and methods of manufacture and use
US5224653A (en) * 1992-01-31 1993-07-06 Nelson Irrigation Corporation Modular sprinkler assembly
US5409168A (en) * 1993-08-31 1995-04-25 Nelson Irrigation Corporation Positive latching cap for modular sprinkler assembly
US5699922A (en) * 1996-05-21 1997-12-23 Mhd Corporation Detachable closure system for an open-ended tubular member
US5891380A (en) * 1989-12-28 1999-04-06 Zapata Innovative Closures, Inc. Tamper evident caps and methods
US6062408A (en) * 1997-04-09 2000-05-16 Dtl Technology Limited Partnership Wide mouth hot fill container
US6237791B1 (en) 1997-04-09 2001-05-29 Dtl Technology Limited Partnership Wide mouth hot fill container
US20060070973A1 (en) * 2004-09-27 2006-04-06 Shingle John M Child-resistant tamper-indicating package
US20070012645A1 (en) * 2005-07-14 2007-01-18 Owens-Illinois Prescription Products Inc. Child-resistant closure, package and method of making
US10926924B2 (en) 2018-05-17 2021-02-23 Helen Of Troy Limited Drink container lid assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474451A1 (fr) * 1980-01-25 1981-07-31 Rochas Parfums Dispositif de fermeture de contenant
FR2597440B1 (fr) * 1986-04-18 1989-04-28 Seiwerling Robert Recipient a fermeture rapide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344942A (en) * 1966-04-05 1967-10-03 Hedgewick Peter Safety cap and container
US3348717A (en) * 1964-12-09 1967-10-24 Treanor Eugene Joseph Closures for containers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348717A (en) * 1964-12-09 1967-10-24 Treanor Eugene Joseph Closures for containers
US3344942A (en) * 1966-04-05 1967-10-03 Hedgewick Peter Safety cap and container

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749270A (en) * 1970-05-25 1973-07-31 L Affleck Safety closure for a container
US4872304A (en) * 1985-12-12 1989-10-10 Tri-Tech Systems International Inc. Closure cap with a seal and method of and apparatus for forming such closure and seal
US4823967A (en) * 1987-06-10 1989-04-25 Tri-Tech Systems International Inc. Closure for container and method for forming the closure
US4925617A (en) * 1987-06-10 1990-05-15 Tri-Tech Systems International, Inc. Method of forming a closure cap with a seal
US4811857A (en) * 1987-06-17 1989-03-14 Tri-Tech Systems International Inc. Closure system and method of forming and using same
US4856667A (en) * 1987-06-17 1989-08-15 Tri-Tech Systems International Inc. Container and cap
US4886947A (en) * 1987-06-17 1989-12-12 Tri-Tech Systems International, Inc. Closure system and method of forming and using same
US5100009A (en) * 1989-05-03 1992-03-31 Tri-Tech Systems International Inc. Closure and access systems for containers and methods of manufacture and use
US5891380A (en) * 1989-12-28 1999-04-06 Zapata Innovative Closures, Inc. Tamper evident caps and methods
US5224653A (en) * 1992-01-31 1993-07-06 Nelson Irrigation Corporation Modular sprinkler assembly
US5409168A (en) * 1993-08-31 1995-04-25 Nelson Irrigation Corporation Positive latching cap for modular sprinkler assembly
US5699922A (en) * 1996-05-21 1997-12-23 Mhd Corporation Detachable closure system for an open-ended tubular member
US6062408A (en) * 1997-04-09 2000-05-16 Dtl Technology Limited Partnership Wide mouth hot fill container
US6126886A (en) * 1997-04-09 2000-10-03 Dtl Technology Limited Partnership Wide mouth hot fill container
US6237791B1 (en) 1997-04-09 2001-05-29 Dtl Technology Limited Partnership Wide mouth hot fill container
US20060070973A1 (en) * 2004-09-27 2006-04-06 Shingle John M Child-resistant tamper-indicating package
US7434703B2 (en) 2004-09-27 2008-10-14 Rexam Prescription Products Inc. Child-resistant tamper-indicating package
US20070012645A1 (en) * 2005-07-14 2007-01-18 Owens-Illinois Prescription Products Inc. Child-resistant closure, package and method of making
WO2007011723A2 (en) * 2005-07-14 2007-01-25 Owens-Illinois Prescription Products Inc. Child-resistant closure, package and method of making
WO2007011723A3 (en) * 2005-07-14 2007-06-21 Owens Illinois Prescription Child-resistant closure, package and method of making
JP2009501681A (ja) * 2005-07-14 2009-01-22 レクサム プリスクリプション プロダクツ インコーポレイテッド チャイルドレジスタントクロージャ、パッケージ、及びその製造方法
US8132684B2 (en) 2005-07-14 2012-03-13 Rexam Prescription Products Inc. Child-resistant closure, package and method of making
US10926924B2 (en) 2018-05-17 2021-02-23 Helen Of Troy Limited Drink container lid assembly

Also Published As

Publication number Publication date
DK137716C (de) 1978-09-25
DE2000413A1 (de) 1970-08-20
BE744068A (fr) 1970-06-15
ES375217A1 (es) 1972-03-01
RO55237A (de) 1973-05-17
CS152468B2 (de) 1973-12-19
GB1302201A (de) 1973-01-04
DE2000413C3 (de) 1975-03-13
BR7015847D0 (pt) 1973-02-01
IL33670A0 (en) 1970-03-22
FR2027855A1 (de) 1970-10-02
DE2000413B2 (de) 1974-07-25
NL7000176A (de) 1970-07-09
DK137716B (da) 1978-04-24
CA946329A (en) 1974-04-30

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