CA2752861C - A child-resistant closure - Google Patents
A child-resistant closure Download PDFInfo
- Publication number
- CA2752861C CA2752861C CA2752861A CA2752861A CA2752861C CA 2752861 C CA2752861 C CA 2752861C CA 2752861 A CA2752861 A CA 2752861A CA 2752861 A CA2752861 A CA 2752861A CA 2752861 C CA2752861 C CA 2752861C
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- CA
- Canada
- Prior art keywords
- closure
- skirt
- region
- lugs
- side skirt
- 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.)
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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
- 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
- B65D50/046—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 disengagement of locking means, e.g. the release of a pawl-like element from a tooth or abutment, to allow removal of the closure by simultaneous rotation
-
- 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
- B65D2215/00—Child-proof means
- B65D2215/02—Child-proof means requiring the combination of simultaneous actions
Abstract
A child-resistant, squeeze-and-turn closure (10) for a container is provided.
The closure comprises a body having a side skirt (30) and locking means (40, 45) carried on or by the skirt for releasably locking the closure on to the container. The closure further comprises one or more regions (50, 55) of reduced stiffness in the vicinity of the locking means.
The closure comprises a body having a side skirt (30) and locking means (40, 45) carried on or by the skirt for releasably locking the closure on to the container. The closure further comprises one or more regions (50, 55) of reduced stiffness in the vicinity of the locking means.
Description
A CHILD-RESISTANT CLOSURE
The present invention relates generally to a child-resistant closure and particularly to a squeeze-and-turn closure.
Many different types of safety closure, or child-resistant closure, have been proposed.
Amongst these is a class known as "squeeze-and-turn". This has a threaded skirt for screw-threaded application to and removal from the neck of a container, and a deformable portion including one or more internal fins or lugs which cooperate with corresponding abutments on the container neck to resist the unscrewing operation until the deformable portion of the closure is deformed to move the fins or lugs clear of the qbutments. Examples of this tyPe of closure are disclosed in GB1521201, and EP0443868.
A problem with known squeeze-and-turn closures is that when the closure is squeezed =
this does not always successfully cause the required movement of the fins or lugs because the deformable portion is not deformed sufficiently.
Embodiments of the present invention may address the problems with known squeeze-and-turn closures.
According to a first aspect of the present invention there is provided a child-resistant, squeeze-and-turn closure for a container, the closure comprising a body having a side skirt and locking means carried on or by the skirt for releasably locking the closure on to the container, in which the closure further comprises one or more regions of reduced stiffness in the vicinity of the locking means. The side skirt may comprise one or more ribs.
By providing regions of reduced stiffness the deformation/deflection of the skirt in the region of the locking means is improved. =
The side skirt may comprise a side wall with the or each rib carried on or by the wall.
The or each rib may be carried on the interior and/or exterior of the wall. In some embodiments the ribs are created as part of a 'lightweighting' exercise in which material is removed. In embodiments without a wall the same lightweighting exercise could result in a skirt formed entirely from ribs with gaps therebetween. In one embodiment a 'basket-like' or 'lattice' configuration is achieved with a crisscross array of ribs.
The body may be at least partly dome-shaped. For example, a body which is entirely dome-shaped is contemplated, as. is a frusto-conical body.
The region of reduced stiffness may be provided by a variation in the material of the closure body. For example, a more deformable material could be used to form at least part of the skirt in the region of the locking means.
The variation may comprise a portion of reduced thickness; for example an internal or external channel.
The ratio of the thickness of the portion of reduced thickness to the thickness of the body immediately adjacent may be in the range 1:5 to 4:5.
The thickness of the portion 00-educed thickness may be in the range 0.1mm to 0.5mm.
The variation may comprise one or more windows. The windows may comprise apertures passing through the entire thickness of the body. Alternatively the windows may comprise thinned wall section membranes. The windows/membranes may be transpersed with connecting webs or bridges to give stability. In addition to increasing flexibility of the closure skirt and helping to direct the pressing forces to the required area, the removal of material reduces costs.
The region of reduced thickness may be formed on a child resistant band provided by the closure. The band may be connected to the closure body by one or more of the ribs. The band may provide the region of reduced stiffness. The region of reduced stiffness may be enhanced by providing an absence of connecting ribs over selected regions of the bands. =
The closure may further comprise a defined top plate from which the side skirt depends.
The variation may be provided in the top plate and/or the side skirt.
The variation may be provided in the region of the intersection between the top plate and the side skirt.
The closure may include a bore seal depending from the top plate and the variation may be located between the bore seal and the skirt.
The present invention relates generally to a child-resistant closure and particularly to a squeeze-and-turn closure.
Many different types of safety closure, or child-resistant closure, have been proposed.
Amongst these is a class known as "squeeze-and-turn". This has a threaded skirt for screw-threaded application to and removal from the neck of a container, and a deformable portion including one or more internal fins or lugs which cooperate with corresponding abutments on the container neck to resist the unscrewing operation until the deformable portion of the closure is deformed to move the fins or lugs clear of the qbutments. Examples of this tyPe of closure are disclosed in GB1521201, and EP0443868.
A problem with known squeeze-and-turn closures is that when the closure is squeezed =
this does not always successfully cause the required movement of the fins or lugs because the deformable portion is not deformed sufficiently.
Embodiments of the present invention may address the problems with known squeeze-and-turn closures.
According to a first aspect of the present invention there is provided a child-resistant, squeeze-and-turn closure for a container, the closure comprising a body having a side skirt and locking means carried on or by the skirt for releasably locking the closure on to the container, in which the closure further comprises one or more regions of reduced stiffness in the vicinity of the locking means. The side skirt may comprise one or more ribs.
By providing regions of reduced stiffness the deformation/deflection of the skirt in the region of the locking means is improved. =
The side skirt may comprise a side wall with the or each rib carried on or by the wall.
The or each rib may be carried on the interior and/or exterior of the wall. In some embodiments the ribs are created as part of a 'lightweighting' exercise in which material is removed. In embodiments without a wall the same lightweighting exercise could result in a skirt formed entirely from ribs with gaps therebetween. In one embodiment a 'basket-like' or 'lattice' configuration is achieved with a crisscross array of ribs.
The body may be at least partly dome-shaped. For example, a body which is entirely dome-shaped is contemplated, as. is a frusto-conical body.
The region of reduced stiffness may be provided by a variation in the material of the closure body. For example, a more deformable material could be used to form at least part of the skirt in the region of the locking means.
The variation may comprise a portion of reduced thickness; for example an internal or external channel.
The ratio of the thickness of the portion of reduced thickness to the thickness of the body immediately adjacent may be in the range 1:5 to 4:5.
The thickness of the portion 00-educed thickness may be in the range 0.1mm to 0.5mm.
The variation may comprise one or more windows. The windows may comprise apertures passing through the entire thickness of the body. Alternatively the windows may comprise thinned wall section membranes. The windows/membranes may be transpersed with connecting webs or bridges to give stability. In addition to increasing flexibility of the closure skirt and helping to direct the pressing forces to the required area, the removal of material reduces costs.
The region of reduced thickness may be formed on a child resistant band provided by the closure. The band may be connected to the closure body by one or more of the ribs. The band may provide the region of reduced stiffness. The region of reduced stiffness may be enhanced by providing an absence of connecting ribs over selected regions of the bands. =
The closure may further comprise a defined top plate from which the side skirt depends.
The variation may be provided in the top plate and/or the side skirt.
The variation may be provided in the region of the intersection between the top plate and the side skirt.
The closure may include a bore seal depending from the top plate and the variation may be located between the bore seal and the skirt.
2 Another aspect of the invention provides a child-resistant, squeeze-and-turn closure for a container, the closure comprising a body having a side skirt open at one end and an annular child-resistant band passing around the open end, the band being coaxial with the open end and having a greater diameter than the open end, the band having a pair of pressing pads and carrying locking means circumferentially positioned between the pads for releasably locking the closure onto the container, the skirt being connected to the band only in the region of the pads to define a gap circumferentially between the pads which provides a region of reduced stiffness in a vicinity of the locking means.
There is also provided a child-resistant, squeeze-and-turn closure for a container, the closure comprising a body having a side skirt and locking means carried on or by the skirt for releasably locking the closure on to the container, wherein the side skirt is flexible and a squeezing action causes the side skirt to deform, wherein the closure further comprises a shoulder connected to or forming part of the side skirt and including one or more regions of reduced stiffness in a vicinity of the locking means whereby to improve deformation of the skirt in the region of the locking means when the closure is squeezed.
A container having such a closure is also provided.
2a = 30856-33 A container having a closure as described herein is also provided.
The present invention will now be more particularly described, by way of .example, with reference to the accompanying' drawings, in which:
Figure 1 is a perspective view of a closure formed according to a first embodiment of the present invention;
Figure 2 is a side elevation of the closure of Figure 1 in the region of a lateral squeeze pad;
Figure 3 is a plan view of the closure of Figure 1;
Figure 4 is an under plan perspective view of the closure of Figure 1;
Figure 5 is an under plan view of the closure of Figure 1;
Figure 6 is a side elevation of the closure of Figure 1 in the region of an internal locking lug;
=
Figure 7 is a section of the closure of Figure 6 taken along line A-A;
Figure 8 is an under plan view of the closure of Figures 1 to 7 shown in a locked position;
Figure 9 is an under plan view of the closure of Figure 8 shown in an unlocked position; =
Figure 10 is a perspective view of a closure formed according to an alternative embodiment;
Figure 11 is a side elevation of the closure of Figure 10;
Figure 12 is a section of the closure of Figures 10 and 11;
Figure 13 is a side elevation of a closure formed according to an alternative -embodiment shown in the region of a pressing pad;
Figure 14 is a side elevation of the closure of Figure 13 shown in the region of a locking lug; and Figure 15 is an underplan view of the closure of Figures 13 and 14;
Figure 16 is a magnified view of the region of reduced stiffness formed in the closure of Figures 13 to 15; and Figure 17 is. an under plan view of the region of Figure 16.
Figure 18 is a side elevation of a closure formed according to a further embodiment;
Figure 19 is a perspective view of the closure of Figure 18;
Figure 20 is an underplan view of the closure of Figures 18 and 19;
Figure 21 is an underplan view of the closure of Figures 18 to 20 shown in a locked position;
=
There is also provided a child-resistant, squeeze-and-turn closure for a container, the closure comprising a body having a side skirt and locking means carried on or by the skirt for releasably locking the closure on to the container, wherein the side skirt is flexible and a squeezing action causes the side skirt to deform, wherein the closure further comprises a shoulder connected to or forming part of the side skirt and including one or more regions of reduced stiffness in a vicinity of the locking means whereby to improve deformation of the skirt in the region of the locking means when the closure is squeezed.
A container having such a closure is also provided.
2a = 30856-33 A container having a closure as described herein is also provided.
The present invention will now be more particularly described, by way of .example, with reference to the accompanying' drawings, in which:
Figure 1 is a perspective view of a closure formed according to a first embodiment of the present invention;
Figure 2 is a side elevation of the closure of Figure 1 in the region of a lateral squeeze pad;
Figure 3 is a plan view of the closure of Figure 1;
Figure 4 is an under plan perspective view of the closure of Figure 1;
Figure 5 is an under plan view of the closure of Figure 1;
Figure 6 is a side elevation of the closure of Figure 1 in the region of an internal locking lug;
=
Figure 7 is a section of the closure of Figure 6 taken along line A-A;
Figure 8 is an under plan view of the closure of Figures 1 to 7 shown in a locked position;
Figure 9 is an under plan view of the closure of Figure 8 shown in an unlocked position; =
Figure 10 is a perspective view of a closure formed according to an alternative embodiment;
Figure 11 is a side elevation of the closure of Figure 10;
Figure 12 is a section of the closure of Figures 10 and 11;
Figure 13 is a side elevation of a closure formed according to an alternative -embodiment shown in the region of a pressing pad;
Figure 14 is a side elevation of the closure of Figure 13 shown in the region of a locking lug; and Figure 15 is an underplan view of the closure of Figures 13 and 14;
Figure 16 is a magnified view of the region of reduced stiffness formed in the closure of Figures 13 to 15; and Figure 17 is. an under plan view of the region of Figure 16.
Figure 18 is a side elevation of a closure formed according to a further embodiment;
Figure 19 is a perspective view of the closure of Figure 18;
Figure 20 is an underplan view of the closure of Figures 18 and 19;
Figure 21 is an underplan view of the closure of Figures 18 to 20 shown in a locked position;
=
3 =
Figure 22 is an underplan view of the closure of Figure 21 shown in and unlocked position;
Figure 23 is a side elevation of a closure formed according to and alternative embodiment;
. Figure 24 is a plan view of the closure of Figure 23;
Figure 25 is a perspective view of the closure of Figure 24; and Figure 26 is a perspective view of a closure formed according to a further embodiment.
Referring first to Figures 1 to 6 there is shown a closure generally indicated 10.
The closure 10 comprises a top plate 20 and a side skirt 30.
=
The top plate 20 comprises a central disc 21 with an inclined annular wall 22 depending from the periphery thereof. At the other end of the annular wall 22 a shoulder extends and merges into the side wall 30.
The closure further comprises an inner wall 35 which is concentric with the skirt 30. The inner wall 35 includes internal screw thread formations 36 for engagement on corresponding external screw thread formations on a container neck (not shown).
The exterior of the open end of the skirt is provided with a pair of diametrically opposed pressing pads.
At the open end of the skirt 30 two diametrically opposed wedge-like lugs 40, 45 are internally positioned. The lugs 40, 45 are circumferentially positioned between the pressing pads 31, 32 on the side wall 30 so that the pads 31, 32 and lugs 40, 45 are spaced by 900 from each other, in the same way as the points on a compass.
Referring now also to Figure 7 the shoulder 23 is provided with two portions of reduced thickness in the form of a pair of diametrically opposed interior grooves 50, 55. The grooves 50, 55 are arcuate and extend over approximately 450 of the circumference, with in the region of the lugs 40, 45, with the lugs 40, 45 positioned approximately centrally with respect to the grooves 50,55 when viewed from below.
The closure 10 also has an annular bore seal 60 depending from the inclined wall 22.
=
Referring now to Figures 8 and 9 there is shown schematic under plan views of the closure 10.
Figure 22 is an underplan view of the closure of Figure 21 shown in and unlocked position;
Figure 23 is a side elevation of a closure formed according to and alternative embodiment;
. Figure 24 is a plan view of the closure of Figure 23;
Figure 25 is a perspective view of the closure of Figure 24; and Figure 26 is a perspective view of a closure formed according to a further embodiment.
Referring first to Figures 1 to 6 there is shown a closure generally indicated 10.
The closure 10 comprises a top plate 20 and a side skirt 30.
=
The top plate 20 comprises a central disc 21 with an inclined annular wall 22 depending from the periphery thereof. At the other end of the annular wall 22 a shoulder extends and merges into the side wall 30.
The closure further comprises an inner wall 35 which is concentric with the skirt 30. The inner wall 35 includes internal screw thread formations 36 for engagement on corresponding external screw thread formations on a container neck (not shown).
The exterior of the open end of the skirt is provided with a pair of diametrically opposed pressing pads.
At the open end of the skirt 30 two diametrically opposed wedge-like lugs 40, 45 are internally positioned. The lugs 40, 45 are circumferentially positioned between the pressing pads 31, 32 on the side wall 30 so that the pads 31, 32 and lugs 40, 45 are spaced by 900 from each other, in the same way as the points on a compass.
Referring now also to Figure 7 the shoulder 23 is provided with two portions of reduced thickness in the form of a pair of diametrically opposed interior grooves 50, 55. The grooves 50, 55 are arcuate and extend over approximately 450 of the circumference, with in the region of the lugs 40, 45, with the lugs 40, 45 positioned approximately centrally with respect to the grooves 50,55 when viewed from below.
The closure 10 also has an annular bore seal 60 depending from the inclined wall 22.
=
Referring now to Figures 8 and 9 there is shown schematic under plan views of the closure 10.
4 =
The closure 10 is shown connected to a container neck 70, which includes external screw thread formations (not shown) for engaging the corresponding threads on the closure 10. The container neck 70 also comprises a pair of diametrically opposed -- abutment lugs 75, 80 positioned to engage the locking lugs 40, 45 of the closure.
Figure 8 shows the closure in the locked position in which the closure is fully screwed on to the container neck 70 and the locking lugs 40, 45 engaged the abutment lugs 75, 80 on the container neck. In this position the closure cannot be rotated relative to the -- container neck due to the abutment of the closure and container lugs. In order for the closure to be rotated the lugs 40, 45 must be moved radially outward with respect to the abutment lugs 75, 80. This is effected by squeezing the closure at the pressing pads 31, 32. The closure skirt 30 is flexible and the squeezing action causes it to ovalise as shown in Figure 9. The lugs 40, 45 can now pass around the outside of the abutment -- lugs 75, 80 so that with a combined squeeze and turn movement the closure can be unscrewed.
The grooves 50, 55 provide a region of reduced stiffness in the vicinity of the locking lugs 40, 45 which in turn reduces the pressure required on the pads 31, 32 in order to effect a -- sufficient deformation of the skirt 30 in those regions. In other words, the grooves 50, 55 reduce the resistance of the skirt 30 to flexing in the region of the locking lugs. The 'hinging' of the skirt relative to the top plate is therefore improved in these areas.
Keeping the material thicker particularly in the region of the pressing pads is important for the transmission of force, hence simply a complete thinning of the entire closure -- would not produce the desired effect.
The regions of reduced stiffness allow the pressing forces on the pads to be directed to where they are most needed.
-- Referring now to Figures 10 to 12 there is shown a closure 110 according to an alternative embodiment.
The closure 110 is very similar to the closure 10 shown in Figures 1 to 9. In this embodiment the portions of reduced stiffness are provided by a pair of diametrically -- opposed windows 180, 185 formed in the closure shoulder 123. The windows 180, 185 serve a similar purpose to the internal grooves of the closure 10 because they provide portions of reduced stiffness in the region of the locking lugs.
The closure 10 is shown connected to a container neck 70, which includes external screw thread formations (not shown) for engaging the corresponding threads on the closure 10. The container neck 70 also comprises a pair of diametrically opposed -- abutment lugs 75, 80 positioned to engage the locking lugs 40, 45 of the closure.
Figure 8 shows the closure in the locked position in which the closure is fully screwed on to the container neck 70 and the locking lugs 40, 45 engaged the abutment lugs 75, 80 on the container neck. In this position the closure cannot be rotated relative to the -- container neck due to the abutment of the closure and container lugs. In order for the closure to be rotated the lugs 40, 45 must be moved radially outward with respect to the abutment lugs 75, 80. This is effected by squeezing the closure at the pressing pads 31, 32. The closure skirt 30 is flexible and the squeezing action causes it to ovalise as shown in Figure 9. The lugs 40, 45 can now pass around the outside of the abutment -- lugs 75, 80 so that with a combined squeeze and turn movement the closure can be unscrewed.
The grooves 50, 55 provide a region of reduced stiffness in the vicinity of the locking lugs 40, 45 which in turn reduces the pressure required on the pads 31, 32 in order to effect a -- sufficient deformation of the skirt 30 in those regions. In other words, the grooves 50, 55 reduce the resistance of the skirt 30 to flexing in the region of the locking lugs. The 'hinging' of the skirt relative to the top plate is therefore improved in these areas.
Keeping the material thicker particularly in the region of the pressing pads is important for the transmission of force, hence simply a complete thinning of the entire closure -- would not produce the desired effect.
The regions of reduced stiffness allow the pressing forces on the pads to be directed to where they are most needed.
-- Referring now to Figures 10 to 12 there is shown a closure 110 according to an alternative embodiment.
The closure 110 is very similar to the closure 10 shown in Figures 1 to 9. In this embodiment the portions of reduced stiffness are provided by a pair of diametrically -- opposed windows 180, 185 formed in the closure shoulder 123. The windows 180, 185 serve a similar purpose to the internal grooves of the closure 10 because they provide portions of reduced stiffness in the region of the locking lugs.
5 Referring now to Figure 13 to 17 there is shown a closure 210 formed according to an alternative embodiment.
The closure 210 is similar to the closure 10 of Figures 1 to 7 in that it includes a pair of internal grooves 250, 255 which provide increased flexibility to the skirt in the regions of = two locking lugs 240, 245.
In this embodiment the skirt 230 is shorter and the 'closure includes an intermediate annular wall 290 between the shoulder 223 and the top plate 220. This gives it a more =
elongate appearance.
The closure 210 does not comprise both an inner wall and a bore seal, but rather a single bore seal 260 which depends from the intersection of the shoulder 223 and the intermediate wall 290. The seal 260 includes internal screw threads 236.
The shoulder region 223 of the closure 210 includes two diametrically opposed internal grooves 250, 255. In this embodiment the thickness of the material adjacent the grooves 250, 255 is approximately 1mm and the thickness of the material defining the base of the groove is approximately 0.2mm thick.
The closure operates in the same way as the closure 10 in that the pressing pads are =
used to ()valise the skirt 230 which moves the locking lugs 240, 245 radially outwards.
The grooves 250, 255 promote this movement of the skirt.
Referring now to Figures .18 to 20 there is shown a closure generally indicated 310. The closure 310 comprises a top plate 320 and a side skirt 330.
The top plate 320 comprises a circular disc.
The closure further comprises an inner wall 335 (see Figure 3)depending from the interior of the skirt. The inner wall includes internal screw thread formations for engagement on corresponding external screw thread formations on a container neck (not shown).
=
The skirt 330 depends from the periphery of the top plate 320. The skirt has two major components: i) an underlying side wall 350; and ii) a plurality of arcuate ribs 360.
The side wall 350 has three sections: i) a domed upper section 351; ii) an annular intermediate section 352; and iii) an annular lower section 353. The upper section 351
The closure 210 is similar to the closure 10 of Figures 1 to 7 in that it includes a pair of internal grooves 250, 255 which provide increased flexibility to the skirt in the regions of = two locking lugs 240, 245.
In this embodiment the skirt 230 is shorter and the 'closure includes an intermediate annular wall 290 between the shoulder 223 and the top plate 220. This gives it a more =
elongate appearance.
The closure 210 does not comprise both an inner wall and a bore seal, but rather a single bore seal 260 which depends from the intersection of the shoulder 223 and the intermediate wall 290. The seal 260 includes internal screw threads 236.
The shoulder region 223 of the closure 210 includes two diametrically opposed internal grooves 250, 255. In this embodiment the thickness of the material adjacent the grooves 250, 255 is approximately 1mm and the thickness of the material defining the base of the groove is approximately 0.2mm thick.
The closure operates in the same way as the closure 10 in that the pressing pads are =
used to ()valise the skirt 230 which moves the locking lugs 240, 245 radially outwards.
The grooves 250, 255 promote this movement of the skirt.
Referring now to Figures .18 to 20 there is shown a closure generally indicated 310. The closure 310 comprises a top plate 320 and a side skirt 330.
The top plate 320 comprises a circular disc.
The closure further comprises an inner wall 335 (see Figure 3)depending from the interior of the skirt. The inner wall includes internal screw thread formations for engagement on corresponding external screw thread formations on a container neck (not shown).
=
The skirt 330 depends from the periphery of the top plate 320. The skirt has two major components: i) an underlying side wall 350; and ii) a plurality of arcuate ribs 360.
The side wall 350 has three sections: i) a domed upper section 351; ii) an annular intermediate section 352; and iii) an annular lower section 353. The upper section 351
6
7 PCT/GB2009/000378 joins the intermediate section 352 at a first step 354 and similarly a second step 355 joins the intermediate and lower sections 352, 353.
The ribs 360 project from the exterior of the side wall. All of the ribs extend from the top plate 320 and 'over the upper 351 and intermediate 352 side wall sections. In other embodiments (not shown) some or all of a set of ribs extend from a point on the side -wall below the top plate. Some of the ribs terminate at the second 355 step whereas others continue as described in more details below.
At the end of the skirt opposite the top plate 320 a child resistant band 365 or hoop is provided.
The exterior of the band is provided with a pair of diametrically opposed pressing pads 331, 332. In this embodiment the pads are generally triangular; other shapes are, of course, possible.
The band 365 is annular and passes around the open end of the side wall annular lower section 353. The band 365 is coaxial with the open end but with a greater diameter so that a gap 366 is present.
The side wall 350 is connected to the band 365 by the ribs 360. More specifically, in this embodiment seven ribs 360a extend beyond the second step in the region of each pad and connect to the pad/band. In other embodiments the band may be connected to the side wall by different numbers of ribs, or by a window or membrane-like thinned wall section.
Two diametrically opposed wedge-like lugs 340, 345 are internally positioned on the band. The lugs 340, 345 are circumferentially positioned between the pressing pads 331, 332 on the 'side wall 330 so that the pads 331, 332 and lugs 340, 345 are spaced by 900 from each other, in the same way as the points on a compass.
Referring now to Figures 21 and 22 there is shown schematic under plan views of the closure 310.
The closure 310 is shown connected to a container neck 370, which includes external screw thread formations (not shown) for engaging the corresponding threads on the closure 310. The container neck 370 also comprises a pair of diametrically opposed abutment lugs 375, 380 positioned to engage the locking lugs 340, 345 of the closure.
Figure 21 shows the closure in the locked position in which the closure is fully screwed on to the container neck 370 and the locking lugs 340, 345 engaged the abutment lugs 375, 380 on the container neck. In this position the closure cannot be rotated relative to the container neck due to the abutment of the closure and container lugs.
In order for the closure to be rotated the lugs 340, 345 must be moved radially outward with respect to the abutment lugs 375, 380. This is effected by squeezing the band at the pressing pads 331, 332. The band is flexible and the squeezing action causes it to = ovalise as shown in Figure 22. When the band flexes the ribs connected thereto are also caused to flex inwards, which in turn causes the side wall to ovalise.
The lugs 340, 345 can now pass around the outside of the abutment lugs 375, 380 so that with a combined squeeze and turn movement the closure can be unscrewed.
Because the ribs only connect to the band 365 in the region of the pads this creates regions of reduced stiffness in the vicinity of the lugs, where no extended ribs are present. Accordingly the force required oh the pads is reduced. This has the same effect as localised windows or membrane wall sections.
Referring now to Figures 23 to 25 there is shown a closure 110 formed accordingly to an alternative embodiment.
The closure 410 is very similar to the closure 310 shown in Figures 18 to 22.
In this embodiment all of the ribs 460 extend so as to connect the band 465. The gap between the band and the side wall provides a region of reduced stiffness on the closure.
Referring now to Figure 26 there is shown a closure 510 formed according to an alternative embodiment.
The closure 510 is very similar to the closure 410 shown in Figures 23 to 25.
In this embodiment additional ribs 561 are provided.
The ribs 561 extend across the side wall 550 perpendicular to the ribs 560 to give a crisscross, lattice-like rib structure.
All of the ribs 560, 561 connect to the band 565. The gap 566 provides a region of reduced stiffness.
The ribs 360 project from the exterior of the side wall. All of the ribs extend from the top plate 320 and 'over the upper 351 and intermediate 352 side wall sections. In other embodiments (not shown) some or all of a set of ribs extend from a point on the side -wall below the top plate. Some of the ribs terminate at the second 355 step whereas others continue as described in more details below.
At the end of the skirt opposite the top plate 320 a child resistant band 365 or hoop is provided.
The exterior of the band is provided with a pair of diametrically opposed pressing pads 331, 332. In this embodiment the pads are generally triangular; other shapes are, of course, possible.
The band 365 is annular and passes around the open end of the side wall annular lower section 353. The band 365 is coaxial with the open end but with a greater diameter so that a gap 366 is present.
The side wall 350 is connected to the band 365 by the ribs 360. More specifically, in this embodiment seven ribs 360a extend beyond the second step in the region of each pad and connect to the pad/band. In other embodiments the band may be connected to the side wall by different numbers of ribs, or by a window or membrane-like thinned wall section.
Two diametrically opposed wedge-like lugs 340, 345 are internally positioned on the band. The lugs 340, 345 are circumferentially positioned between the pressing pads 331, 332 on the 'side wall 330 so that the pads 331, 332 and lugs 340, 345 are spaced by 900 from each other, in the same way as the points on a compass.
Referring now to Figures 21 and 22 there is shown schematic under plan views of the closure 310.
The closure 310 is shown connected to a container neck 370, which includes external screw thread formations (not shown) for engaging the corresponding threads on the closure 310. The container neck 370 also comprises a pair of diametrically opposed abutment lugs 375, 380 positioned to engage the locking lugs 340, 345 of the closure.
Figure 21 shows the closure in the locked position in which the closure is fully screwed on to the container neck 370 and the locking lugs 340, 345 engaged the abutment lugs 375, 380 on the container neck. In this position the closure cannot be rotated relative to the container neck due to the abutment of the closure and container lugs.
In order for the closure to be rotated the lugs 340, 345 must be moved radially outward with respect to the abutment lugs 375, 380. This is effected by squeezing the band at the pressing pads 331, 332. The band is flexible and the squeezing action causes it to = ovalise as shown in Figure 22. When the band flexes the ribs connected thereto are also caused to flex inwards, which in turn causes the side wall to ovalise.
The lugs 340, 345 can now pass around the outside of the abutment lugs 375, 380 so that with a combined squeeze and turn movement the closure can be unscrewed.
Because the ribs only connect to the band 365 in the region of the pads this creates regions of reduced stiffness in the vicinity of the lugs, where no extended ribs are present. Accordingly the force required oh the pads is reduced. This has the same effect as localised windows or membrane wall sections.
Referring now to Figures 23 to 25 there is shown a closure 110 formed accordingly to an alternative embodiment.
The closure 410 is very similar to the closure 310 shown in Figures 18 to 22.
In this embodiment all of the ribs 460 extend so as to connect the band 465. The gap between the band and the side wall provides a region of reduced stiffness on the closure.
Referring now to Figure 26 there is shown a closure 510 formed according to an alternative embodiment.
The closure 510 is very similar to the closure 410 shown in Figures 23 to 25.
In this embodiment additional ribs 561 are provided.
The ribs 561 extend across the side wall 550 perpendicular to the ribs 560 to give a crisscross, lattice-like rib structure.
All of the ribs 560, 561 connect to the band 565. The gap 566 provides a region of reduced stiffness.
8
Claims (22)
1. A child-resistant, squeeze-and-turn closure for a container, the closure comprising a body having a side skirt and locking means carried on or by the skirt for releasably locking the closure on to the container, wherein the side skirt is flexible and a squeezing action causes the side skirt to deform, wherein the closure further comprises a shoulder connected to or forming part of the side skirt and including one or more regions of reduced stiffness in a vicinity of the locking means whereby to improve deformation of the skirt in the region of the locking means when the closure is squeezed.
2. The closure as claimed in claim 1, in which the region of reduced stiffness comprises one or more windows.
3. The closure as claimed in claim 1, in which the region of reduced stiffness comprises one or more grooves.
4. The closure as claimed in any one of claims 1 to 3, in which the region of reduced stiffness is provided by a variation in material of the closure.
5. The closure as claimed in claim 4, in which the variation comprises a portion of reduced thickness.
6. The closure as claimed in claim 5, in which the ratio of thickness of the portion of reduced thickness to thickness of the body immediately adjacent the portion of reduced thickness is in a range of 1:5 to 4:5.
7. The closure as claimed in claim 5 or claim 6, in which the portion of reduced thickness is in a range of 0.1mm to 0.5mm thick.
8. The closure as claimed in any one of claims 1 to 7, in which the closure further comprises a top plate from which the side skirt depends.
9. The closure as claimed in claim 8, in which the region of reduced stiffness is provided by a variation in material of the closure in a region of an intersection between the top plate and the side skirt.
10. The closure as claimed in any one of claims 1 to 8, in which the shoulder merges into the side skirt.
11. The closure as claimed in any one of claims 1 to 10, in which the closure further comprises an inner wall.
12. The closure as claimed in claim 11, in which the inner wall carries a screw thread.
13. The closure as claimed in claim 11 or 12, in which the region of reduced stiffness is provided between the side skirt and the inner wall.
14. The closure as claimed in any one of claims 1 to 13, in which the body is generally dome-shaped.
15. The closure as claimed in any one of claims 1 to 14, in which the side skirt comprises pressing pads.
16. The closure as claimed in any one of claims 1 to 15, in which the skirt includes a pair of diametrically opposed pressing pads and in which the locking means comprises a pair of diametrically opposed locking lugs each circumferentially positioned substantially midway between said pressing pads for releasably locking said closure onto a container.
17. The closure as claimed in claim 16, in which said shoulder is provided with a pair of arcuate grooves, or windows circumferentially positioned to extend above said locking lugs so as to reduce resistance of said skirt to flexing at points circumferentially corresponding to said lugs and hence to improve deformation of said sidewall in a region of said locking lugs when said pads are depressed radially inward so as to release said lugs in use.
18. The closure as claimed in claim 17, in which the lugs are positioned approximately circumferentially centrally with respect to said groves or windows when viewed from below.
19. The closure as claimed in any one of claims 1 to 15, in which the side skirt comprises a flexible child-resistant band.
20. The closure as claimed in any one of claims 16 to 18, in which the side skirt comprises a flexible child-resistant band.
21. The closure as claimed in claim 20, in which the band carries the lugs and the pads.
22. A container having the closure according to any one of claims 1 to 21.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0802995A GB0802995D0 (en) | 2008-02-19 | 2008-02-19 | A child-resistant closure |
| GB0802995.1 | 2008-02-19 | ||
| GB0803433.2 | 2008-02-26 | ||
| GB0803433A GB0803433D0 (en) | 2008-02-26 | 2008-02-26 | A child-resistant closure |
| GB0807889A GB0807889D0 (en) | 2008-04-30 | 2008-04-30 | A child-resistant closure |
| GB0807889.1 | 2008-04-30 | ||
| PCT/GB2009/000378 WO2009103947A1 (en) | 2008-02-19 | 2009-02-11 | A child-resistant closure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2752861A1 CA2752861A1 (en) | 2009-08-27 |
| CA2752861C true CA2752861C (en) | 2016-08-23 |
Family
ID=40580849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2752861A Active CA2752861C (en) | 2008-02-19 | 2009-02-11 | A child-resistant closure |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20100320168A1 (en) |
| EP (2) | EP2254805B1 (en) |
| AT (1) | ATE535464T1 (en) |
| BR (1) | BRPI0907466B1 (en) |
| CA (1) | CA2752861C (en) |
| ES (2) | ES2377542T3 (en) |
| HK (1) | HK1146028A1 (en) |
| MX (1) | MX2010008526A (en) |
| PL (1) | PL2386497T3 (en) |
| WO (1) | WO2009103947A1 (en) |
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| US8651304B2 (en) | 2011-06-08 | 2014-02-18 | Mwv Slatersville, Llc | Dispensing closure |
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| DE102013000756A1 (en) * | 2013-01-17 | 2014-07-17 | Meadwestvaco Calmar Gmbh | Child-resistant discharge device |
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| GB2519205B (en) | 2013-08-16 | 2017-02-08 | Mwv Slatersville Llc | Two-piece child-resistant dispensing closure |
| DE102013220492A1 (en) * | 2013-10-10 | 2015-04-16 | Aptar Radolfzell Gmbh | Child-resistant discharge device |
| US9545264B2 (en) * | 2014-06-06 | 2017-01-17 | Surgiquest, Inc. | Trocars and obturators |
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| US9975673B2 (en) | 2014-12-23 | 2018-05-22 | S.C. Johnson & Son, Inc. | Squeeze and turn child resistant closure attachment |
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| US10676257B2 (en) | 2016-06-06 | 2020-06-09 | The Procter & Gamble Company | Container systems with a squeeze-and-turn closure |
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| USD841471S1 (en) | 2017-02-24 | 2019-02-26 | S. C. Johnson & Son, Inc. | Bottle |
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-
2009
- 2009-01-11 US US12/867,558 patent/US20100320168A1/en not_active Abandoned
- 2009-02-11 ES ES09711787T patent/ES2377542T3/en active Active
- 2009-02-11 EP EP09711787A patent/EP2254805B1/en active Active
- 2009-02-11 ES ES11006570T patent/ES2406804T3/en active Active
- 2009-02-11 EP EP11006570.3A patent/EP2386497B9/en active Active
- 2009-02-11 BR BRPI0907466-0A patent/BRPI0907466B1/en active IP Right Grant
- 2009-02-11 PL PL11006570T patent/PL2386497T3/en unknown
- 2009-02-11 MX MX2010008526A patent/MX2010008526A/en unknown
- 2009-02-11 CA CA2752861A patent/CA2752861C/en active Active
- 2009-02-11 AT AT09711787T patent/ATE535464T1/en active
- 2009-02-11 WO PCT/GB2009/000378 patent/WO2009103947A1/en active Application Filing
-
2011
- 2011-01-13 HK HK11100316.4A patent/HK1146028A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP2386497A1 (en) | 2011-11-16 |
| EP2254805A1 (en) | 2010-12-01 |
| EP2386497B1 (en) | 2013-04-03 |
| MX2010008526A (en) | 2010-08-31 |
| ES2406804T3 (en) | 2013-06-10 |
| ES2377542T3 (en) | 2012-03-28 |
| EP2386497B9 (en) | 2013-10-02 |
| CA2752861A1 (en) | 2009-08-27 |
| ATE535464T1 (en) | 2011-12-15 |
| WO2009103947A1 (en) | 2009-08-27 |
| BRPI0907466B1 (en) | 2021-07-13 |
| BRPI0907466A2 (en) | 2015-07-14 |
| EP2254805B1 (en) | 2011-11-30 |
| PL2386497T3 (en) | 2013-09-30 |
| HK1146028A1 (en) | 2011-05-13 |
| US20100320168A1 (en) | 2010-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20140210 |