GB2175289A - Container and child resistant closure assembly - Google Patents
Container and child resistant closure assembly Download PDFInfo
- Publication number
- GB2175289A GB2175289A GB08512387A GB8512387A GB2175289A GB 2175289 A GB2175289 A GB 2175289A GB 08512387 A GB08512387 A GB 08512387A GB 8512387 A GB8512387 A GB 8512387A GB 2175289 A GB2175289 A GB 2175289A
- Authority
- GB
- United Kingdom
- Prior art keywords
- skirt
- assembly according
- closure
- container
- external
- 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.)
- Withdrawn
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
- B65D50/048—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 engagement of means, e.g. threads, to allow removal of the closure by simultaneous rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The container (1) of an assembly of a container (1) and a child resistant closure (5) therefor has an external bead (3) on the neck (2) thereof and the skirt (7) thereof which makes snap engagement with the bead (3). The neck (2) of the container (2) comprises an external screw thread (4) whilst the skirt (7) of the closure (5) is locally weakened to provide local deformable skirt portions (11) which can be deformed inwards by finger pressure thereon to drivingly engage thread portions (13) on the skirt portions (11) with the screw thread (4). The skirt (7) has an internal annular surface (9) which cooperates with an external annular surface (10) on the neck (2). The closure (5) is removable from the container (1) by deforming the skirt portions (11) to drivingly engage the thread portions (13) with the screw thread (4) by finger pressure thereon and rotating the closure (5) relative to the container (1) whilst maintaining said finger pressure. <IMAGE>
Description
SPECIFICATION
Container and child resistant closure assembly
This invention relates to container and child resistant closure assemblies.
The present invention has as its object to provide an assembly of a container and a child resistant closure therefor such that the container can be conventional screw top container adapted to receive a conventional screw cap and the closure can be simple and effective in use, economical to manufacture and capable of use on containers sealed with a foil membrane.
The present invention provides an assembly of a container and a child-resistant closure therefor, the container having a neck portion defining a mouth, an external annular surface on the neck portion, an external screw thread on the neck portion and an external bead on the neck portion; the closure comprising a top wall, a skirt depending from the top wall, an interned flange on annular surface on the skirt which cooperates with said external annular surface on the neck portion, the skirt being locally weakened to provide at least one deformable skirt portion, said at least one portion having at least one projection thereon which is normally out of driving engagement with said screw thread, the closure being removable from the container by deforming the at least one skirt portion by finger pressure thereon to effect driving engagement of the at least one projection with the screw thread and effecting relative rotation between the closure and container whilst maintaining said finger pressure, said cooperating annular surfaces serving to maintain the closure substantially in axial alignment with the neck portion of the container during assembly and disassembly of the closure with the container.
Said external annular surface on the neck portion may be arranged to extend from the mouth of the neck portion to the start of said external thread and said internal annular surface on the skirt portion may be adjacent said top wall of the closure.
Said cooperating annular surfaces provide stability of axial alignment of neck portion and closure during conditions of assembly, disassembly and snap fit, thus ensuring, as far as possible, that the closure may only be fitted or removed in substantially correct axial alignment with the neck portion.
The diameter of said internal surface on the skirt portion may be less than that for any part of the remainder of the skirt portion excluding said at least one projection and the diameter of said cooperating external surface on the neck portion may be the diameter of the root of said external thread on the neck portion.
The said cooperating annular surfaces may be adapted to form a sliding seal when the container and closure are in said snap fit engagement.
In order to ensure correct alignment of closure and neck portion upon assembly to enable said snap fit to occur it is desirable that said cooperating surfaces are adapted to engage each other prior to snap engagement of said bead and internal flange, upon assembly.
The container may be a bottle, phial or similar.
Preferably local deformable skirt portions are provided at diametrically opposite sides of the skirt.
Said inturned flange may be provided around the free rim of said skirt remote from the top wall.
Said bead and/or said interned flange may be continuous or discontinuous. Where the interned flange be interrupted in the region of the or each said skirt portion.
An outwardly directed annular flange may be provided on said neck portion below said extenral bead so that the inturned flange of the closure is received between said external bead and said annular flange on the neck portion to prevent or discourage prising off the enclosure.
The external surface of the or each said skirt portion may be ribbed, roughened or otherwise formed so that it can be distinguished by feel. Further, it may be desirable to raise the or each said skirt portion from the remainder of said skirt. The or each said skirt portion may be of thinner wall thickness than the remainder of the skirt and the remainder of the skirt may be relatively stiff or rigid.
The said at least one projection on said skirt portion may comprise a thread portion or thread portions adapted to cooperate with said external screw thread on the neck when the at least one skirt portion is deformed inwardly towards said neck by finger pressure on the at least one skirt portion. When said diametrically opposed skirt portions are employed, one of such portions may comprise a single thread portion and the other of such said portions may comprise two thread portions spaced axially of the closure.
To provide additional stability of axial alignment between the closure and said neck portion during assembly, disassembly and in said snap fit condition, the internal surface of said skirt, except in the region of said at least one skirt portion, may lie close to said external thread.
In order to facilitate said driving engagement of said at least one projection with the screw thread, said at least one deformable skirt portion may be made of thinner wall section than the remainder of the skirt; and further to aid stability of axial alignment between closure and said neck portion, the remainder of said skirt may be relatively stiff or inflexible, compared to said at least one skirt portion.
Initial engagement upon assembly, of said internal and external annular surfaces may be facilitated by provision of a leading taper on either or both of said annular surfaces.
Said at least one skirt portion may be defined by slits which partially separate said at least one skirt portion from the remainder of the skirt.
Said inturned flange may comprise, in the direction of assembly of the closure with the container, a leading cam surface for first engaging said bead and camming the inturned flange over the bead and a trailing cam surface which engages behind the bead to retain the closure on the container.
The mouth of the container may be provided with a membrane seal.
The closure may be formed from plastics material, for example a mixture of high and low density polythene and may be moulded. The container may be formed from glass or plastics material.
The present invention will be more particularly described with reference to the accompanying diagrammatic drawings, in which:
Figure 1 is a fragmentary sectional elevation of a container and child resistant closure according to one embodiment of the present invention,
Figure 2 is a side elevation of the closure of the embodiment of Figure 1,
Figure 3 is a bottom plan view of the closure of
Figure 2,
Figure 4 is a side elevation of the closure taken at right angles to Figure 2,
Figure 5 is a top plan view of the closure,
Figure 6 is a sectional elevation of the closure of
Figure 2, and
Figure 7 is a sectional elevation of the closure taken at right angles to Figure 6.
Referring to the drawings it will be seen that the assembly illustrated therein comprises a container 1 having a neck portion 2 provided with an external bead 3 and an external screw thread 4 and a closure 5 having a top wall 6 and a depending skirt 7 which terminates in an inturned flange 8 adapted to make snap engagement with the external bead 3 as shown in Figure 1. The skirt 7 has an internal annular surface 9 adjacent the top wall 6 which cooperates with an external annular surface 10 of the neck portion 2 to provide axial stability of the closure 5 during assembly and disassembly and in the snap fit condition, to make prising off of the closure 5 more difficult.
The skirt 7 of the closure 5 is locally weakened to provide two diametrically opposed local deformable skirt portions 11. The local deformable skirt portions 11 have on the internal surface thereof thread portions 13 adapted to cooperate with the external screw thread 4 of the neck 2 of the container 1 when the portions 11 are deformed inwardly by finger pressure thereon. Thus, to release the snap engagement of the inturned flange 8 with the external bead 3, finger pressure is applied tq the skirt portions 11 to engage the thread portions 13 with the external screw thread 4 and such finger pressure is maintained whilst the closure 5 is rotated anti-clockwise, as shown in the drawings, relative to the container 1 to screw the closure 5 off the neck of the container 1.One skirt portion 11 has a single thread portion 13 whilst the other skirt portion 11 has two thread portions 13 which are spaced in the axial direction of the closure, although other arrangements could be adopted if desired.
The local deformable skirt portions 11 are of thinner wall section than the remainder of the skirt 7, and such skirt portions 11 are sufficiently flexible to be readily deformable by finger pressure thereon. The remainder of the skirt 7 is relatively stiff or inflexible as compared to the skirt portions 11 to resist the closure being too easily prised off the container, whilst retaining enough flexibility to permit the snap engagement.
In addition to the external bead 3, the neck 2 of the container 1 has an optional outwardly directed annular flange 14 below the external bead 3 so that the inturned flange 8 of the skirt 7 is received between the external bead 3 and the annular flange 14. The annular flange 14 discourages prising off of the closure 5.
The external surfaces of the skirt portions 11 are preferably ribbed, roughened or otherwise formed as shown at 12 so that the portions 11 can be identified by feel even in the dark or by a person with poor eyesight.
The inturned flange 8 is interrupted in two places, as shown at 15 in the region of the skirt portions 11. This allows a deeper engagement of the flange 8 beneath the bead 3, a deeper variation in bead tolerance and greater distortion of the skirt 7 where the flange is interrupted, which assists the snap engagement.
The inturned flange 8 has a first inclined cam surface 16 which assists the snap engagement of the flange 8 with the bead 3, an intermediate axially extending surface 17, the length of which controls the angular distance over which finger pressure must be maintained on the skirt portions 11 as the closure is rotated relative to the container to release the snap engagement of the flange 8 with the bead 3 when removing the closure, and a second cam surface 18 which engages the bead 3 and serves to urge the closure down onto the neck of the container.
The top wall 6 of the closure 5 may have suitable instructions thereon such as, "Grip cap sides hard and turn bottle", with an arrow thereon to indicate the direction of rotation.
The container 1 may be conventional bottle or phial of glass, plastics or other suitable material.
The closure 5 is preferably formed, e.g., moulded, from a suitable plastics material, preferably polypropylene.
It will be readily understood that the present intention provides a container and a child proof closure therefor wherein the container can be a conventional bottle having an externally screw threaded neck for the reception of a conventional screw cap. It will also be appreciated that the closure is simple and effective in use, economical to manufacture and capable of use on containers sealed with a foil membrane.
Claims (30)
1. An assembly of a container and a child-resistant closure thereof, the container having a neck portion defining a mouth, an external annular surface on the neck portion an external screw thread on the neck portion and an external bead on the neck portion; the closure comprising a top wall, a skirt depending from the top wall, an inturned flange on the skirt which is a snap fit with said bead, an internal annular surface on the skirt which cooperates with said external annular surface on the neck portion, the skirt being locally weakened to provide at least one deformable skirt portion, said at least one portion having at least one projection thereon which is normally out of driving engagement with said screw thread, the closure being removable from the container by deforming the at least one skirt portion by finger pressure thereon to effect driving engagement of the at least one projection with the screw thread and effecting relative rotation between the closure and container whilst maintaining said finger pressure, said cooperating annular surfaces serving to maintain the closure substantially in axial alignment with the neck portion of the container during assembly and disassembly of the closure with the container.
2. An assembly according to claim 1, wherein said external annular surface on the neck portion extends from the mouth thereof to the start of said external screw thread and said internal annular surface on the skirt portion of the closure is adjacent said top wall.
3. An assembly according to claims 1 or 2, wherein the diameter of said internal diameter of the remainder of the skirt portion, excluding said at least one projection.
4. An assembly according to any one of the preceding claims, wherein the diameter of said external surface on the neck portion is the diameter of the root of said external thread on the neck portion.
5. An assembly according to any one of the preceding claims, wherein the said cooperating annular surfaces form a sliding seal when the container and closure are in snap fit engagement.
6. An assembly according to any one of the preceding claims, wherein the said cooperating surfaces are adapted to engage prior to the snap engagement of said bead and said flange, upon assembly.
7. An assembly according to any one of the preceding claims, wherein local deformable skirt portions are provided at diametrically opposed sides of the skirt.
8. An assembly according to any one of the preceding claims, wherein said external bead and/ or said inturned flange is continuous or discontinuous.
9. An assembly according to claim 8, wherein said inturned flange is interrupted in the region of the, or each, said skirt portion.
10. An assembly according to any one of the preceding claims, wherein an outwardly directed annular flange is provided on the neck of the container below said external bead so that the said inturned flange of the closure is received between the external bead and the annular flange on the neck of the container.
11. An assembly according to any one of the preceding claims, wherein the container is a bottle or phial.
12. An assembly according to any one of the preceding claims, wherein the external surface of the or each said skirt portion is ribbed, roughened or otherwise formed so that it can be distinguished by feel.
13. An assembly according to any one of the preceding claims, wherein the skirt of the closure is of larger internal diameter in the region of said at least one skirt portion.
14. An assembly according to claim 13, wherein the skirt of larger external diameter in the region of said at least one skirt portion.
15. An assembly according to any one of the preceding claims, wherein said at least one projection comprises a thread portion or thread portions adapted to cooperate with the external screw thread on the neck of the container when the at least one skirt portion is deformed inwardly towards said neck by finger pressure on the at least one skirt portion.
16. An assembly according to claim 15 when dependant upon claim 7, wherein one of said diametrically opposed skirt portions comprises a single thread portion and the other of said skirt portions comprises two thread portions spaced axially of the closure.
17. An assembly according to any one of the preceding claims, wherein the internal surface of said skirt, except in the region of said at least one skirt portion, lies close to said external thread.
18. An assembly according to any one of the preceding claims, wherein said at least one skirt portion is of thinner wall section than the remainder of the skirt.
19. An assembly according to claim 18, wherein the remainder of the skirt is relatively stiff or inflexible compared to said at least one skirt portion.
20. An assembly according to any one of the preceding claims, wherein said internal surface of the skirt is provided with a leading taper in the direction of assembly.
21. An assembly according to any one of the preceding claims, wherein said external surface of the neck portion is provided with a leading taper in the direction of assembly.
22. An assembly according to claim 18, wherein the remainder of the skirt is relatively stiff or inflexible compared to the at least one skirt portion.
23. An assembly according to any one of the preceding claims, wherein the at least one skirt portion is defined by slits which partially separate the at least one skirt portion from the remainder of the skirt.
24. An assembly according to any one of the preceding claims, wherein said inturned flange comprises, in the direction of assembly of the closure with the container, a leading cam surface for first engaging said bead and camming the inturned flange over the bead and a trailing cam surface which engages behind the bead to retain the closure on the container.
25. An assembly according to any one of the preceding claims, wherein the mouth of the container is provided with a membrane seal.
26. An assembly according to any one of the preceding claims, wherein the closure is formed from plastics material.
27. An assembly according to claim 26, wherein the closure is formed from a mixture of high and low density polythene.
28. An assembly according to claim 26 or 27, wherein the closure is moulded.
29. An assembly according to any one of the preceding claims, wherein the container is formed from glass or plastics material.
30. An assembly of a container and a child resistant closure therefor, substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08512387A GB2175289A (en) | 1985-05-16 | 1985-05-16 | Container and child resistant closure assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08512387A GB2175289A (en) | 1985-05-16 | 1985-05-16 | Container and child resistant closure assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8512387D0 GB8512387D0 (en) | 1985-06-19 |
| GB2175289A true GB2175289A (en) | 1986-11-26 |
Family
ID=10579228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08512387A Withdrawn GB2175289A (en) | 1985-05-16 | 1985-05-16 | Container and child resistant closure assembly |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2175289A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0845423A1 (en) | 1996-11-29 | 1998-06-03 | JOMA Kunststoffwerk und Warenhandel Ges.m.b.H. | Container closure |
| US8757407B2 (en) | 2003-10-13 | 2014-06-24 | Rexam Prescription Products Inc. | Closure and container package with child-resistant and non-child-resistant modes of operation |
-
1985
- 1985-05-16 GB GB08512387A patent/GB2175289A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0845423A1 (en) | 1996-11-29 | 1998-06-03 | JOMA Kunststoffwerk und Warenhandel Ges.m.b.H. | Container closure |
| US8757407B2 (en) | 2003-10-13 | 2014-06-24 | Rexam Prescription Products Inc. | Closure and container package with child-resistant and non-child-resistant modes of operation |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8512387D0 (en) | 1985-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |