GB1602611A - Closures for containers - Google Patents
Closures for containers Download PDFInfo
- Publication number
- GB1602611A GB1602611A GB2259677A GB2259677A GB1602611A GB 1602611 A GB1602611 A GB 1602611A GB 2259677 A GB2259677 A GB 2259677A GB 2259677 A GB2259677 A GB 2259677A GB 1602611 A GB1602611 A GB 1602611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- closure member
- assembly
- members
- cap
- inner closure
- 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.)
- Expired
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
- B65D50/041—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 the closure comprising nested inner and outer caps or an inner cap and an outer coaxial annular member, which can be brought into engagement to enable removal by rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Description
(54) IMPROVEMENTS IN AND RELATING TO CLOSURES FOR
CONTAINERS
(71) We, METAL CLOSURES
GROUP LIMITED, formerly known as Metal
Closures Limited a British Company of P.O.
Box 32, Bromford Lane, West Bromwich, West
Midlands do hereby declare the invention, for which we pray that a Patent may be granted to us, and the method by which it is to be performed to be particularly described in and by the following statement: This invention relates to closures for containers and, more particularly, to a safety closure assembly for a container having a dispensing aperture.
It is known to provide containers with a safety closure assembly in the form of double closure members, each assembly comprising an inner closure member within an outer closure member, the inner closure member being arranged to close the dispensing aperture of the container. Such a safety closure assembly may be used for containers intended to contain medicine and like pharmaceutical products; and the inner closure member is arranged to be removed from the container only by applying to, the outer closure member a movement which is beyond the capacity of a child. In this manner, access to the contents of such a container can be made much more difficult, this reducing accessibility to children.
In our copending British Patent Application (Divided herefrom) No. 29621/80, Serial NO.
1,602,612 there is described and claimed a safety closure assembly for a container having a dispensing opening, said assembly comprising an inner, and an outer closure member, each comprising crown and skirt portions, the inner member being adapted to close said dispensing opening, and the outer member being retained on said inner member to allow of relative rotation therebetween in a disengaged position,
interengagement means provided between said members to lock said members together for a common rogation about the dispensing opening,
characterised in that the crown portion of the outer closure member is resilient and forms in use a continuous, or substantially continuous dished shape from the circumferential edge thereof toward the centre thereof, the central portions of the crowns of the inner and outer members being spaced apart by a protuberance, whereby the crown of the outer member is normally spaced to a disengaged position, but may be moved to an interengaged position by an axial force exerted on the crown of the outer member which exceeds the resilient forces inherent in the said outer member.
According to the present invention, there is provided a safety closure assembly for a container having a dispensing opening, said assembly comprising: an inner closure member adapted to close said dispensing opening,
an outer closure member adapted to receive said inner closure member therein and formed with a resilient dished crown portion adapted to about the inner closure member on assembly thereby to bias the inner and outer closure members to a disengaged condition,
retaining means provided between the inner closure member and the outer closure member whereby the inner closure member is retained within the outer member for relative rotation with respect thereto, and
interengagement means provided between the inner closure member and the outer closure member whereby the inner closure member and the outer closure member rotate together,
wherein torque between the inner and outer closure members for removal of the inner closure member from the container is achieved by moving the outer closure member against the bias of the dished crown to move the interengagement means into an engaged condition,
and wherein the dished crown further carries a yield able abutment element adapted for complementary engagement with a yieldable abutment element carried on a face of said inner closure opposed to said crown, whereby relative rotation between said members causes the yieldable abutment members to ride over one another and to emit an audible indication of said relative rotation.
The complementary abutment elements may comprise ratchet means whereby said relative rotation is in one direction only.
The ratchet means may comprise pawl members provided on the dished crown and teeth members provided on the outer upper surface of said inner closure member. The pawl members are each spaced an equal distance from adjacent pawl members in a circumferential direction of the outer closure member. Preferably, there are provided five pawl members.
The resilient dished crown portion may have a central inwardly projecting blister. The central inwardly projecting blister is adapted to abut the inner closure member on assembly.
The said crown portion may carry the said pawl members and serves as a diaphragm to amplify the audible indication produced by the pawl members riding over the teeth members.
The inner and outer closure members may be formed of a resilient plastics material such for example as a high density polyethylene.
Following is a description by way of example only and with reference to the accompanying drawings of one method of carrying the invention into effect.
In the drawings: Figure 1 is an exploded cross sectional view of an embodiment of a bottle, an inner closure member and an outer closure member according to the invention,
Figure 2 is a plan view of the outer closure and
Figure 3 is a plan view of the inner closure.
Referring now to the drawings, a glass bottle 1 has a neck 2 having an external thread 3 and an aperture 4. The neck 2 is thereby adapted to receive a cap 5 of plastics material, the cap 5 having an internal thread 6 and knurled rim 7. The cap 5 has an upper outer surface 8 having in plan view an annular array of teeth 9 upstanding from the upper outer surface and each having a saw-tooth cross section when the cap is in cross section. The cap 5 is covered by an outer cap 10 of plastics material the outer cap 10 having an upper circular wall 11 and a circumferential skirt 12 depending therefrom.
The skirt 12 has at a lo,wer end portion thereof an inwardly circumferentially extending flange 13 and at an upper end portion thereof an inner circumferentially extending knurled band 14. The upper wall or crown 11 is dished and curves downwardly and inwardly, of the skirt 12 and has a central recessed portion or blister 15. The upper wall 11 has depending from a lower surface thereof five pawl members 16 which are complementary with the teeth 9 in that the pawl members 16 each have a sawtooth cross section when the outer cap 10 is in cross section. Each of the pawl members is spaced an equal distance from adjacent pawl members in a circumferential direction of the outer cap 10.
The aperture 4 of the bottle 1 is closed by screwing the cap 5 onto the neck 2 of the bottle. The outer cap 10 then is pressed onto the cap 5 until the flange 13 engages under the cap 5, the central recessed portion 15 bearing on the upper outer surface 8 of the cap. The dimensions of the cap 5 and the outer cap 10 are such that when the outer cap 10 is pressed onto the cap 5, the lower surface of the central recessed portion 15 of the outer cap 10 is in engagement with the upper outer surface 8 of the inner cap 5 and the bias of the upper wall 11 causes the outer cap 10 to be urged axially of the inner cap 5 so that the flange 13 engages under the lower rim of the inner cap 5 and the knurled band 14 is clear of the top of the inner cap 5, as shown in Figure 2.However, the dimensions of the pawl members 16 are such that angular movement of the outer cap 10 relative to the inner cap 5 causes the pawl members 16 to engage the teeth 9.
The arrangement is such that when the outer cap 10 has been pressed onto the cap 5 which already has been screwed onto the bottle 1 and the outer cap 10 is provided with the said angular movement, that is the outer cap 10 is turned on an axis co-axial with the inner cap 5 to unscrew the inner cap 5 from the bottle 10, the outer cap 10 will slip relative to the inner cap 5. The angular movement therefore will not be transmitted to the inner cap 5 and the inner cap 5 will not be unscrewed from the neck 2 of the bottle 1.However, during the said angular movement the pawl members 16 will sequentially engage the teeth 9 such that sloping surfaces of the pawl members 16 engage sloping surfaces of the teeth 9 with a result that the pawl members 16 slide upwardly of the teeth 9 thereby deforming the upper wall 11 of the outer cap 10 away from the upper outer surface 8 of the inner cap 5 with progressively increasing force. Continued angular movement causes the pawl members 16 to slide over the teeth 9 and to snap back to their original position, due to the bias of the upper wall 11 of the outer cap 10 in a direction towards the upper outer surface 8 of the inner cap 5, in which the upper wall 11 is in an undeflected condition. As the pawl members 16 ride over the teeth 9 they produce a "clicking" sound, and this is accentuated by the dished upper wall 11 which acts as a diaphagm.
If axial thrust is applied to the outer cap 10 during the said angular movement, the axial thrust being applied towards the inner cap 5, the upper wall 11 will be temporarily deformed upwardly of the outer cap 10 and the knurled band 14 will engage the knurled rim 7 of the inner cap 5. In this manner, torque applied to the outer cap 10 is transmitted to the inner cap 5 to enable the inner cap 5 to be unscrewed from the neck 2 cf the bottle 1.
When the applied thrust is released, the outer cap 10 is raised relative to the inner cap 5, due to the bins of the upper wall 11, returning to its undeformed condition until the flange 13 engages under the lower rim of the inner cap 5. The end wall 11 is assisted in returning to its undeformed condition by the central recessed portion 15.
It will be appreciated that the force necessary to effect relative axial movement of the inner and outer caps 5 and 10, so that the knurled band 14 engages the knurled rim 7, is beyond the capacity of a child. Thus, a closure assembly in accordance with the present invention provides an assembly which reduces significantly the ability of a child to remove the assembly from the container.
It will also be appreciated that if a child attempts to remove the assembly from the container by turning the outer cap 10 relative to the bottle 1, the outer cap 10 will be turned relative to the inner cap 5 causing the abutment members 16 toi ride over the abutment members 9 resulting in an audible "clicking" sound. The sound therefore constitutes an audible warning that an attempt is being made to remove the assembly from the bottle.
WHAT WE CLAIM IS:- 1. A safety closure assembly for a container having a dispensing opening, said assembly comprising: an inner closure member adapted to, close said dispensing opening,
an outer closure member adapted to receive said inner closure member therein and formed with a resilient dished crown portion adapted to abut the inner closure member on assembly thereby to bias the inner and outer closure member to a disengaged condition, retaining means provided between the inner closure member and the outer closure member whereby the inner closure member is retained within the outer member for relative rotation with respect thereto, and
interengagement means provided between the inner closure member and the outer closure member whereby the inner closure member and the outer closure member rotate together,
wherein torque between the inner and outer closure members for removal of the inner closure member from the container is achieved by moving the outer closure member against the bias of the dished crown to move the interengagement means into an engaged condition, and wherein the dished crown further carries a yieldable abutment element adapted for
complementary engagement with a yieldable abutment element carried on a face of said
inner closure opposed to said crown,
whereby relative rotation between said members causes the yieldable abutment members to ride over one another and to emit an audible indication o said relative rotation.
2. An assembly as claimed in Claim 1 wherein the complementary abutment elements comprise ratchet means whereby said relative rotation is in one direction only.
3. An assembly as claimed in Claim 2 wherein the ratchet means comprise pawl members provided on the dished crown and teeth members provided on the outer upper surface of said inner closure member.
4. An assembly as claimed in Claim 3 wherein the pawl members are each spaced an equal distance from adjacent pawl members in a circumferential direction of the outer closure member.
5. An assembly as claimed in Claims 3 or 4 wherein there are provided five pawl members.
6. An assembly as claimed in any one of
Claims 3 to 5 wherein the resilient dished crown portion has a central inwardly projecting blister adapted to abut the inner closure on assembly.
7. An assembly as claimed in any one of
Claims 1 to 6 wherein said crown portion serves as a diaphragm to amplify the audible indication produced by the pawl members riding over the teeth members.
8. An assembly as claimed in any one of
Claims 3 to 7 wherein the inner and outer closure members are formed of a resilient plastics material.
9. An assembly as claimed in Claim 8 wherein the plastics material is a high density polyethylene.
10. An assembly as claimed in any one of
Claims 3 to 9 wherein the inner closure member has an upper outer surface having in plan view an annular array of said teeth members upstanding from the said upper outer surface.
11. An assembly as claimed in Claim 10 wherein each of the teeth members has a sawtooth cross section when the cap is in cross section.
12. An assembly as claimed in any one of
Claims 3 to 11 wherein the outer closure member comprises an upper circular wall and a circumferential skirt depending therefrom having at a lower end portion thereof an inwardly circumferentially extending flange and at an upper end portion thereof an inner circumferentially extending knurled band.
13. An assembly as claimed in any one of
Claims 3 to 12 wherein the pawl members each have a saw-tooth cross section when the outer closure member is in cross section.
14. An assembly as claimed in any one of
Claims 1 to 13 wherein the dimensions of the inner closure member and the outer closure member are such that when the outer closure member is pressed onto the cap onto the inner closure member the lower surface of the central recessed portion of the outer closure member is in engagement with the upper outer surface of the inner closure member and the bias of the dished crown portion causes the outer closure member to be urged axially of the inner closure member so that the knurled band is clear of the top of the inner closure member.
15. An assembly as claimed in Claim 14 wherein the dimensions of the pawl members are such that angular movement of the outer closure member relative to the inner closure member in a direction to remove the inner
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (17)
1. A safety closure assembly for a container having a dispensing opening, said assembly comprising: an inner closure member adapted to, close said dispensing opening,
an outer closure member adapted to receive said inner closure member therein and formed with a resilient dished crown portion adapted to abut the inner closure member on assembly thereby to bias the inner and outer closure member to a disengaged condition, retaining means provided between the inner closure member and the outer closure member whereby the inner closure member is retained within the outer member for relative rotation with respect thereto, and
interengagement means provided between the inner closure member and the outer closure member whereby the inner closure member and the outer closure member rotate together,
wherein torque between the inner and outer closure members for removal of the inner closure member from the container is achieved by moving the outer closure member against the bias of the dished crown to move the interengagement means into an engaged condition, and wherein the dished crown further carries a yieldable abutment element adapted for
complementary engagement with a yieldable abutment element carried on a face of said
inner closure opposed to said crown,
whereby relative rotation between said members causes the yieldable abutment members to ride over one another and to emit an audible indication o said relative rotation.
2. An assembly as claimed in Claim 1 wherein the complementary abutment elements comprise ratchet means whereby said relative rotation is in one direction only.
3. An assembly as claimed in Claim 2 wherein the ratchet means comprise pawl members provided on the dished crown and teeth members provided on the outer upper surface of said inner closure member.
4. An assembly as claimed in Claim 3 wherein the pawl members are each spaced an equal distance from adjacent pawl members in a circumferential direction of the outer closure member.
5. An assembly as claimed in Claims 3 or 4 wherein there are provided five pawl members.
6. An assembly as claimed in any one of
Claims 3 to 5 wherein the resilient dished crown portion has a central inwardly projecting blister adapted to abut the inner closure on assembly.
7. An assembly as claimed in any one of
Claims 1 to 6 wherein said crown portion serves as a diaphragm to amplify the audible indication produced by the pawl members riding over the teeth members.
8. An assembly as claimed in any one of
Claims 3 to 7 wherein the inner and outer closure members are formed of a resilient plastics material.
9. An assembly as claimed in Claim 8 wherein the plastics material is a high density polyethylene.
10. An assembly as claimed in any one of
Claims 3 to 9 wherein the inner closure member has an upper outer surface having in plan view an annular array of said teeth members upstanding from the said upper outer surface.
11. An assembly as claimed in Claim 10 wherein each of the teeth members has a sawtooth cross section when the cap is in cross section.
12. An assembly as claimed in any one of
Claims 3 to 11 wherein the outer closure member comprises an upper circular wall and a circumferential skirt depending therefrom having at a lower end portion thereof an inwardly circumferentially extending flange and at an upper end portion thereof an inner circumferentially extending knurled band.
13. An assembly as claimed in any one of
Claims 3 to 12 wherein the pawl members each have a saw-tooth cross section when the outer closure member is in cross section.
14. An assembly as claimed in any one of
Claims 1 to 13 wherein the dimensions of the inner closure member and the outer closure member are such that when the outer closure member is pressed onto the cap onto the inner closure member the lower surface of the central recessed portion of the outer closure member is in engagement with the upper outer surface of the inner closure member and the bias of the dished crown portion causes the outer closure member to be urged axially of the inner closure member so that the knurled band is clear of the top of the inner closure member.
15. An assembly as claimed in Claim 14 wherein the dimensions of the pawl members are such that angular movement of the outer closure member relative to the inner closure member in a direction to remove the inner
closure member from the container causes the pawl members to engage the teeth members.
16. An assembly as claimed in any one of the preceding Claims wherein the retaining means comprises a flange extending from the outer closure member adapted to engage under the inner closure member when said inner closure member is received in said outer closure member.
17. A safety closure assembly according to claim 1 and substantially as hereinbefore described and as illustrated in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2259677A GB1602611A (en) | 1978-05-26 | 1978-05-26 | Closures for containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2259677A GB1602611A (en) | 1978-05-26 | 1978-05-26 | Closures for containers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1602611A true GB1602611A (en) | 1981-11-11 |
Family
ID=10182011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2259677A Expired GB1602611A (en) | 1978-05-26 | 1978-05-26 | Closures for containers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1602611A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090143A1 (en) * | 1982-03-26 | 1983-10-05 | ZELLER PLASTIK Koehn, Gräbner & Co. | Child-resistant press-and-turn closure |
| DE3245304A1 (en) * | 1982-12-08 | 1984-08-16 | Owens-Illinois, Inc., Toledo, Ohio | Child-resistant safety closure |
| GB2138410A (en) * | 1983-04-22 | 1984-10-24 | Metal Closures Group Plc | Safety closure with click mechanism |
| DE3315548A1 (en) * | 1983-04-29 | 1984-12-06 | Victor Paris Wassilieff | LOCKING, IN PARTICULAR CHILD LOCKING LOCK |
| US5762215A (en) * | 1991-07-30 | 1998-06-09 | Glaxo Wellcome | Cap for a container |
| WO2013120149A1 (en) * | 2012-02-17 | 2013-08-22 | PRICE, Roger, William | A closure |
-
1978
- 1978-05-26 GB GB2259677A patent/GB1602611A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090143A1 (en) * | 1982-03-26 | 1983-10-05 | ZELLER PLASTIK Koehn, Gräbner & Co. | Child-resistant press-and-turn closure |
| DE3211150A1 (en) * | 1982-03-26 | 1983-10-06 | Zeller Plastik Koehn Graebner | CHILD-SAFE PRINT-TURN LOCK |
| DE3245304A1 (en) * | 1982-12-08 | 1984-08-16 | Owens-Illinois, Inc., Toledo, Ohio | Child-resistant safety closure |
| GB2138410A (en) * | 1983-04-22 | 1984-10-24 | Metal Closures Group Plc | Safety closure with click mechanism |
| DE3315548A1 (en) * | 1983-04-29 | 1984-12-06 | Victor Paris Wassilieff | LOCKING, IN PARTICULAR CHILD LOCKING LOCK |
| US5762215A (en) * | 1991-07-30 | 1998-06-09 | Glaxo Wellcome | Cap for a container |
| WO2013120149A1 (en) * | 2012-02-17 | 2013-08-22 | PRICE, Roger, William | A closure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PS | Patent sealed | ||
| PS | Patent sealed |
Free format text: DELETE IN JOURNAL 4849 PAGE 428 |
|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920526 |