Information
-
Patent Grant
-
6679375
-
Patent Number
6,679,375
-
Date Filed
Wednesday, May 9, 200123 years ago
-
Date Issued
Tuesday, January 20, 200420 years ago
-
Inventors
-
-
Examiners
- Yu; Mickey
- Mohandesi; Jila M.
Agents
- Greer, Burns & Crain, Ltd.
-
CPC
-
US Classifications
Field of Search
US
- 206 568
- 222 135
- 222 136
- 222 82
- 222 80
- 222 129
- 222 1291
- 215 DIG 8
- 215 10
-
International Classifications
-
Abstract
A cap for a container, for a drink of two components, can be stored or carried with the components stored separately. Mixing prior to consumption is effected by a pushing device incorporated into a cover on the cap, which cover is releasably secured to the container. The pushing device bears against a tablet holder the base of which has a low burst of strength. The pushing device can be one of a number of embodiments, all of which can operate with or without an annular cutting ring and flexible seal adjacent the underside of the tablet holder. The cover and tablet holder form a liquid seal with the top of the container until the cover is removed.
Description
TECHNICAL FIELD
The present invention relates to a cap for a container, in which the cap includes means for releasing material contained within the cap into the container and for sealing the container.
BACKGROUND ART
Different styles of caps or lids for containers (for liquids) are prolific. They are known in a variety of forms, which can include, for example: a tamper-evident ring, the ability to be releasable, a screw-thread, or a combination of these. Such caps can also include sipper tops (which can be drunk through and are slidably resealable).
Drinks and drink containers where two components making the drink are best mixed immediately before drinking are available separately. When the concentrate is in tablet or powder form, the availability of drink containers with all elements for the drink in the one container is not common. One example of such a cap for a container is in my application, WO 98/40289.
Other examples include the following. WO 98/00348 discloses a closure cap which ruptures a blister pack (containing a tablet) on the opening of the cap, and provides an immediate fluid pathway to the outside of the container. JP 08091418 also disclosures a closure cap and basket. However the whole of the closure cap must be moved inwardly onto the container, to mix the liquid and the solid together.
U.S. Pat. No. 4,638,927 (Morane) discloses a cap with a slidable pusher to break the tablet holder. However, this action immediately creates a fluid pathway to the outside of the container. This also occurs in U.S. Pat. No. 3,347,410 (Schwartzman).
These problems are to some extent overcome by the invention disclosed in my application WO 98/40289. This discloses a cap with a collar, a basket containing the solid part of the drink, and a spike, formed in the cap, which can release the tablet into the fluid in the bottom of the container. The container and cap also include the ability of the cap to act as a sipper top, and to include a separate cover and tamper-evident ring.
The disadvantage of this manner of overcoming the drawbacks of earlier art is the complexity of the design and the die needed for the manufacture of the neck portion (to pierce the top and free the tablet into the fluid). Further, the overall height of the cap above the container can be awkward. In addition, the sealing of the container, either when mixing the fluid and solid or when the container is not in use after mixing, requires an arrangement of two sealing means or a sliding engagement of two or more parts.
It is an object of the present invention to address the foregoing problems or at least to provide the public with a useful choice.
Further aspects and advantages of the present invention will become apparent from the ensuing description which is given by way of example only.
DISCLOSURE OF INVENTION
According to one aspect of the present invention there is provided a cap for a liquid container with a top opening, said cap including:
a tablet holder which includes a flanged flat edge which is capable of being heat sealed or glued to other materials; a flexible top; a base of flexible material, said base having a burst strength which is less than that of said top; wherein the flanged edge, the top and the base are capable of lamination; and wherein the top and the base are spaced apart, forming a space for the placement therebetween of a tablet;
a collar with means to releasably engage with the top of the container, said collar including a flange for releasably retaining said flanged edge of the tablet holder between the collar and the top of the container, forming a fluid seal therebetween;
a cover which is releasably securable to the collar; and
pushing means capable of manual operation to push the top of the tablet holder inwards into the container, when the tablet holder is in position; wherein
the top of the tablet holder provides part of the fluid seal once the burst strength of the base is exceeded on application of force to the pushing means; and wherein
said tablet holder and collar are releasably removable from the container.
In a further aspect of the present invention there is provided a cap for a liquid container with a top opening, as described above, in which the pushing means is integrally formed with the cover, and may include a centrally located area of reinforcement or stiffening, or a shaped area of increased strength on the top of the cover. Optionally, said pushing means may be incorporated as a tear away area of the top of the cover which can be released from the cover and pushed down onto the top of the tablet holder in one action.
A further option is to incorporate the pushing means in the collar, forming a dome across the central portion of the collar.
Optionally the tablet holder may be formed with the base and the edge being flat and planar; and the top being raised above the edge. Further, optionally, the tablet may be sealed in-between two layers of highly flexible foil (or foil and plastic) to form a package. The edges of the package are heat sealed to the flanged edge of the holder.
In a still further aspect of the present invention there is provided a cap for a liquid container with a top opening, as described above, in which the pushing means is integrally formed with the cover, said pushing means including:
a hinged portion of the top of the cover, said hinged portion comprising: a partially cut away section, being from the top of the cover; and two sections, one of which is a straight section of the top of the cover, which straight section is flexible and acts as a hinge means for the hinged portion, and a cut-away section which section is resiliently moveable; and
an operative portion, which includes digit-engaging means, and which portion is positioned over the cut-away section of the hinged portion, said operative section being moveable between a first and a second position, the second position being one in which pressure is applied through the cut-away portion, to the top of the tablet holder.
Preferably, the digit-engaging means is in the form of a circular tab which is elevated above the top of the cover by a columnar support. Also preferably, the cut-away section is substantially straight-sided with a circular balloon-style end portion which is immediately underneath the digit-engaging means.
Optionally the shape of the cut-away can be selected from: straight sided with a balloon-style end portion; parallel arcuate sides; non-parallel straight sides; non-parallel arcuate sides; and a combination thereof.
In a yet further aspect of the present invention there is provided a cap for a liquid container with a top opening, as described above, in which the cap further includes a cutting ring which is annular and positioned between the top of the container and the flanged edged of the tablet holder. Preferably also, said cutting ring has an inner edge adapted to cut and/or break the base of the tablet holder.
Preferably also, said cap further includes a flexible annular seal between the top of the container and the flanged edge. Optionally, the annular seal and the cutting ring are formed integrally, when both options form part of the cap.
Optionally the base of the tablet holder includes a circular area positioned adjacent and inward of the flanged edge, which circular area is an area of reduced burst strength relative to that of the remainder of the base. Optionally, there is included in the cap a further circular flexible seal which is positioned below and spaced apart from the base of the tablet holder, said seal being of a material of low burst strength, such that the tablet or cut-away section, when bearing down on said seal, causes the seal to burst.
Optionally, the cap or the cap and container further includes tamper evident means. Such means is of known type and, for example, includes a collar of plastic material around the seal between the cover and the container, or optionally could be incorporated into the cover.
Preferably, the cover is formed from plastics, integrally, by a method selected from: injection moulding, comoulding, blow moulding; and a combination of these. Preferably all other parts (except the tablet) are of a plastics material or incorporate plastics; Preferably the tablet is of known type that effervesces and dissolves quickly when in liquid.
Optionally the cap can include a sipper top or other means to evacuate the fluid from the container (once the two parts are mixed), which can be secured to the container after the removal of the collar and holder remains.
BRIEF DESCRIPTION OF DRAWINGS
By way of example only, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which:
FIG. 1
is a partial perspective side section view of a first preferred embodiment of the present invention with the cap closed;
FIG. 2
is the same view of the invention as shown in
FIG. 1
, without the cover;
FIG. 3
is the same view as shown in
FIG. 2
, with the tablet holder broken and the tablet in the container;
FIG. 4
is a partial perspective side section view of a second preferred embodiment of the present invention with the cap closed;
FIG. 5
is the same view as
FIG. 4
, with the tablet holder broken and the tablet in the container;
FIG. 6
is a partial perspective side section view of a third preferred embodiment of the present invention with the cap closed;
FIG. 7
is the same view as
FIG. 6
with the tamper-evident ring opened;
FIG. 8
is the same view as
FIG. 7
, with the ring removed;
FIG. 9
is the same view as
FIG. 8
, with the tablet holder broken and the tablet in the container;
FIG. 10
is a partial perspective side section view of a fourth preferred embodiment of the present invention with the cap closed;
FIG. 11
is a partial perspective side section view of a fifth preferred embodiment of the present invention with the cap closed;
FIG. 12
is a partial perspective side section view of a sixth preferred embodiment of the present invention with the cap closed;
FIG. 13
is a partial perspective side section view of a seventh preferred embodiment of the present invention with the cap closed;
FIG. 14
is the same view as
FIG. 11
, with the tablet holder broken and the tablet in the container;
FIG. 15
is a partial top perspective view of a second preferred embodiment of the pushing means of the present invention;
FIG. 16
is a plan view from underneath of a second preferred embodiment of the holder of the present invention;
FIGS. 17
a
and
b
show two views of a first preferred embodiment of the cutting ring of the present invention;
FIGS. 18
a
and
b
show two views of a second preferred embodiment of the cutting ring of the present invention;
FIGS. 19
a
and
b
show two views of a third preferred embodiment of the cutting ring of the present invention;
FIG. 20
is a plan view in diagrammatic form of a third preferred embodiment of the pushing lever of the present invention; and
FIGS. 21
a
and
b
show two views of a fourth preferred embodiment of the cutting ring of the present invention.
BEST MODES FOR CARRYING OUT THE INVENTION
Referring to
FIGS. 1
to
3
, a first preferred embodiment of the cap
2
for a container
3
is thereshown. The container
3
includes a top opening with external screw threads on sides
4
. A collar
5
is internally screw-threaded to engage with the sides
4
of the container
3
. The cap
2
includes a tablet holder
6
and cover
7
.
The holder
6
includes a base
8
with a thickened circumferential edge
9
, and a top
10
. The base
8
and edge
9
are flat, with the top
10
having sides
11
. The base
8
, top
10
, and sides
11
define a space for a tablet
12
. The base
8
is of a material that has a considerably smaller burst strength than that of the top
10
or the sides
11
. The base
8
is made of a foil material of known type which is impervious to liquid and gases. If so desired, the foil may included a plastic film of known type.
If so desired, the holder
6
may be arranged with the base
8
and top
10
inverted, so that the top
10
is flat and approximately co-planar with the edge
9
. The base
8
and sides
11
would then extend downwardly from the top
10
.
The edge
9
and the top
10
are of a plastics material that is generally stiffer than the material of the base
8
. However the base
8
is also constructed so that there is a measure of flexibility therein.
The collar
5
includes sides
13
and a smaller annular flange
14
. When the collar
5
is in position the flange
14
extends inwardly of the top of the sides
4
and of the edge
9
. However the hole left in the collar
5
is sufficient that the sides
11
and the top
10
of the holder
6
will fit therethrough.
The cover
7
is shaped to fit over the collar
5
and holder
6
and be releasably securable to the collar
5
. This securement can be through securing means on the collar
5
and the cover
7
; or may be in the form of a snap or interference fit between the collar
5
and the cover
7
, as is desired. Further, the cover
7
may be hinged to the collar
5
, if so desired.
The collar
5
and the cover
7
may include tamper-evident means (not shown) of known type, if so desired. This may be incorporated into the collar
5
and cover
7
at the time of manufacture. Alternatively, the tamper evident means may be a plastic film (not shown) which is sealed around the collar
5
and the cover
7
, covering the join therebetween. Such film is of the type that can be pulled off the container
3
, when opening the container
3
.
To mix the two parts of the drink, the cover
7
is removed and downward force exerted on the top
10
(FIG.
2
). This downward pressure is generally supplied by a thumb or other manual means. The lesser burst strength of the base
8
causes this to break before the top
10
. The flange
14
retains the edge
9
in position. Thus after the base
8
has broken, the tablet
12
is forced or dropped into the container
3
, mixing with the liquid therein (FIG.
3
).
If so desired, the base
8
includes a weakened circumferential portion immediately adjacent the outside edge of the tablet
12
. Thus when the burst strength of the base
8
is reached, a circular portion of the base
8
parts from the rest of the base
8
, allowing the tablet
12
to easily fall into the container
3
.
If so desired, the holder
6
can be constructed so that the tablet
12
is encased in the foil of the base
8
with a circular overlap about the outside of the tablet
12
. This overlap is then heat sealed or otherwise laminated to the edge
9
to form the holder
6
.
The container
3
can be shaken or moved to aid in the mixing of the tablet
12
into the liquid. Once the tablet
12
is completely dissolved, the collar
5
and the remains of the holder
6
can be released from the container
3
, allowing access to the drink (FIG.
4
). The collar
5
and the cover
7
may be re-secured to the container
3
, providing for a means to reseal the drink, if so desired.
Referring to
FIGS. 4 and 5
, a second embodiment of the cap
32
for the container
3
is thereshown. Where parts are unchanged from that discussed above with reference to the first embodiment, like numerals are used.
The collar
35
includes a flange
44
and upper sloping side
34
to a domed top
46
. At the centre of the top
46
is a button
45
. The collar
35
is formed integrally. The flange
44
performs the same function as the flange
14
of the first embodiment, as described above.
To mix the two parts of the drink, the cover
7
is removed and downward force exerted on the button
45
(FIG.
5
). This downward pressure is generally supplied by a thumb or other manual means. The lesser burst strength of the base
8
causes this to break before the top
10
. The flange
44
retains the edge
9
in position. Thus after the base
8
has broken, the tablet
12
is forced or dropped into the container
3
, mixing with the liquid therein (FIG.
5
).
The container
3
can be shaken or moved to aid in the mixing of the tablet
12
into the liquid. The liquid seal is provided by the edge
9
and the top
10
of the tablet holder
6
, which is retained in position by the collar
35
. Once the tablet is completely dissolved, the collar
35
and the remains of the holder
6
can be released from the container
3
, allowing access to the drink. The collar
35
and the cover
7
may be re-secured to the container
3
, providing for a means to reseal the drink, if so desired.
Referring to
FIGS. 6
to
9
, a third embodiment of the cap
62
for the container
3
is thereshown. Where parts are unchanged from that discussed above with reference to the first embodiment, like numerals are used.
The collar
65
includes a flange
74
and upper side
64
to a flat top
76
. A ring of material
75
around the centre of the top
76
is immediately adjacent a breakaway portion
77
. The portion
77
is a weakened portion of the top
76
. The collar
65
is formed integrally. The flange
74
performs the same function as the flange
14
of the first embodiment, as described above.
To mix the two parts of the drink, the cover
7
is removed. The ring of material
75
is lifted up (FIG.
7
). Downward pressure is then applied to the top
10
, as described above (FIG.
8
). The flange
74
retains the edge
9
in position. Thus after the base
8
has broken, the tablet
12
is forced or dropped into the container
3
, mixing with the liquid therein (FIG.
9
).
In a further preferred embodiment, the ring of material
75
may be pushed downward, acting in the same manner as the button
45
(of the second preferred embodiment) to push the tablet
12
into the container
3
.
Referring to
FIG. 10
, a fourth preferred embodiment of the cap
82
for a container
3
is thereshown. The container
3
includes a top opening with external screw threads on sides
4
. A collar
85
is internally screw-threaded to engage with the sides
4
of the container
3
. The cap
82
includes a tablet holder
86
and cover
87
.
The holder
86
includes a base
88
with a thickened circumferential edge
89
, and a top
90
. The base
88
and edge
89
are flat, with the top
90
having sides
91
. The base
88
, top
90
, and sides
91
define a space for a tablet
12
. The base
88
is of a material that has a considerably smaller burst strength than that of the top
90
or the sides
91
. The base
88
is made of a foil material, of known type which is impervious to liquid and gases. If so desired, the foil may included a plastic film of known type.
If so desired, the holder
86
may be arranged with the base
88
and top
90
inverted, so that the top
90
is flat and approximately co-planar with the edge
89
. The base
88
and sides
91
would then extend downwardly from the top
90
.
The edge
89
and the top
90
are of a material that is generally stiffer than the material of the base
88
. However the base
88
is also constructed so that there is a measure of flexibility therein.
Referring to
FIGS. 11 and 16
, a fifth preferred embodiment of the cap
112
includes the holder
106
and is thereshown. The holder
106
includes the same parts as the first embodiment or the fourth embodiment of the holder
86
unless varied as here described. The holder
106
includes a circular area of low burst strength, generally indicated by the dotted line B on FIG.
16
. This area B, which is essentially a thin annulus, is inward from the flanged edge
109
. The burst strength of the area B is less than that of the remainder of the base
108
.
Referring to
FIG. 10
, the collar
85
includes sides
93
and a smaller, annular flange
94
. The flange
94
is dimensioned such that when the collar
85
is in position, it extends inwardly of the top of the sides
4
and of the edge
89
. However the hole left in the collar
85
is sufficient that the sides
91
and the top
90
of the holder
86
will fit therethrough.
The cover
87
is shaped to fit over the collar
85
and holder
86
and be releasably securable to the collar
85
. This securement can be through securing means (not shown) on the collar
85
and the cover
87
; or may be in the form of a snap or interference fit between the collar
85
and the cover
87
, as is desired. Further, the cover
87
may be hinged to the collar
85
, if so desired.
The collar
85
and the cover
87
may include tamper-evident means (not shown) of known type, if so desired. This may be incorporated into the collar
85
and cover
87
at the time of manufacture. Alternatively, the tamper evident means may be a plastic film (not shown) which is sealed around the collar
85
and the cover
87
, covering the join therebetween. Such film is of the type that can be pulled off the container
3
, when opening the container
3
.
The collar
85
further includes a top
95
which incorporates a pushing lever generally denoted by the numeral
96
. The lever
96
includes a thumb-engaging tab
97
which is connected by a column
98
and base
101
to a flexible section
99
of the top
95
. The flexible section
99
is formed integrally with a hinging section, which is generally denoted by the number
100
. The flexible section
99
and base
101
of the column
98
are separated from the remainder of the top
90
by cut-out slots and curves section
102
. The tab
97
may be larger in surface area than the base
101
, if so desired.
The collar
85
further includes an annular seal
103
. The seal
103
, of a flexible plastics such as EVA, is positioned between the top of the container
3
and the flanged edge
99
of the tablet holder (
86
,
106
). The seal
103
may be permanently affixed to the top of the container
3
, if so desired. The seal
103
aids in forming a liquid-tight seal between the container
3
and the collar
85
. If so desired, the seal
103
may be an O-ring of known type.
The above described embodiment works as follows: To mix the two parts of the drink, the cover
87
is removed. Downward force (in the direction of Arrow C,
FIG. 14
) exerted on the tab
97
(FIG.
14
). This downward pressure is generally supplied by a thumb or other manual means. As the tab
97
is depressed, the base
101
is depressed below the plane of top
95
to engage with the top
90
of the tablet holder
86
. The flexible section
99
deforms (FIG.
14
), preferably elastically, to operate as a hinging means or hinge section.
The lesser burst strength of the base
88
of the tablet holder
86
causes the base
88
to break before the top
90
. The flange
94
retains the edge
99
in position. Thus after the base
88
has broken, the tablet
12
is forced or dropped into the container
3
, mixing with the liquid therein. If the second preferred embodiment of the tablet holder
106
is used, the base
88
bursts almost completely along the area B (FIG.
16
), allowing the tablet
12
to fall quickly into the container
3
.
If so desired, the holder (
86
,
106
) can be constructed so that the tablet
12
is encased in the foil of the base
88
with a circular overlap (not shown) about the outside of the tablet
12
. This overlap is then heat sealed or otherwise laminated to the edge
89
to form the holder (
86
,
106
).
The container
3
can be shaken or moved to aid in the mixing of the tablet
12
into the liquid. Once the tablet
12
is completely dissolved, the collar
85
and the remains of the holder (
86
,
106
) can be released from the container
3
, allowing access to the drink. The collar
85
and the cover
87
may be re-secured to the container
3
, providing for a means to reseal the container
3
, if so desired.
Referring to
FIG. 11
, a fifth preferred embodiment of the cap
112
of the present invention is thereshown. Where parts are unchanged from that discussed above with reference to the fourth embodiment, like numerals are used.
Referring to FIGS.
11
and
21
(
a,b
), the collar
105
includes a first preferred embodiment of an annular cutting ring
424
. The ring
424
includes a plurality of teeth
425
or saw edgings, giving the ring
424
a saw-tooth appearance. The tips of the teeth
425
are positioned on a circumference which is substantially the same as the circumference of the weakened area B on the tablet holder
106
, if the second preferred embodiment of the holder
106
is used. If so desired, the teeth
425
continue around all the circumference of the ring
424
. The collar
105
also includes two seals
103
, one above and one below the cutting ring
424
.
The operation of the collar
105
has only minor variations on that of the first preferred embodiment of the collar
85
, except that as the base
101
bears down on the top
90
of the holder (
86
,
106
), the teeth
125
of the ring
124
aid in bursting the base
88
of the holder (
86
,
106
). The ring
124
can be left in place or removed, as is desired, when the holder (
86
,
106
) and collar
105
are removed from the container
3
.
Referring to
FIGS. 8
a
and
b
, a second embodiment of the cutting ring
224
is thereshown. The inner tip
225
of the ring
224
is a continuous tapered tip around the circumference of the ring
224
.
FIGS. 19
a
and
b
show a third preferred embodiment of a cutting ring
324
of the present invention, in which the inner, upper corner
325
of the ring
324
acts as the cutting edge. In like manner,
FIGS. 21
a
and
b
show a fourth preferred embodiment of the cutting ring
424
with teeth
425
. The major difference between this embodiment and the fourth preferred embodiment of the ring
124
is that the teeth
425
do not taper to a point at the tip as do the teeth
125
(
FIGS. 17
a
and
b
).
Referring to
FIG. 12
, a third preferred embodiment of the collar
205
is thereshown in a sixth preferred embodiment of the cap
132
of the present invention. Where parts are unchanged from that discussed above with reference to the fourth embodiment, like numerals are used.
The collar
205
includes a cutting ring
124
and one seal
103
. Whilst the ring
124
is shown as the first preferred embodiment of the ring
124
, it will be appreciated by one skilled in the field that any of the embodiments of the ring (
124
,
224
,
324
,
424
) may be used, without departing from the scope of the invention.
Between the ring
124
and the seal
103
is a further, splash guard
25
which is circular in cross-section. If so desired, the guard
25
may be glued or otherwise permanently affixed to either the underside of the ring
124
or the top side of the seal
103
, as is desired. The guard
25
is broken by the tablet
12
as it is pushed through into the container
3
by the downward action of the tab
97
.
Referring to
FIG. 13
, a seventh preferred embodiment of the cap
152
of the present invention is thereshown. Where parts are unchanged from that discussed above with reference to the fourth embodiment, like numerals are used.
In this embodiment of the cap
152
the seal and cutting ring are combined into one part, generally denoted by numeral
123
. This includes a shoulder of soft flexible material and an inner serrated edge, with teeth
225
, of a harder material. If so desired, a splash guard-
25
may be incorporated into the embodiment, as described above. The liquid seal is broken in the same manner as described above.
The pushing lever
96
has been described with a circular cross-section. However, it will be appreciated by those skilled in the art that the cross-sectional shape may be other than circular, for example, oval.
A second preferred embodiment of the pushing lever
216
is shown in FIG.
15
. The tab
117
, column
118
and base
121
are of oval cross-section. The cut-out section
222
is arcuate and the two sides of the section
222
are not parallel.
A third preferred embodiment of the pushing lever
316
is shown in FIG.
20
. The tab
117
is secured to a curved flexible section
319
, with curved cut-outs
322
.
It will be appreciated by one skilled in the art that the elements of the various embodiments of the pushing lever (
96
,
116
,
216
,
316
) may be combined in different ways, without departing from the scope of the invention.
All parts of the cap (
2
,
32
,
62
82
,
112
,
132
) are of plastics material. The collar (
5
,
35
,
65
,
85
,
105
,
205
,
305
) is formed in one piece, as is the cover (
7
,
87
) and the holder (
6
,
86
,
106
). However, if so desired, the components may be formed in more than one piece and later assembled. The seal
103
is preferably of a very flexible plastics or a foam plastics such as EVA, or the like. The ring (
124
,
224
,
324
) is preferably of a rigid plastics material.
If so desired, the drink (consisting of the container
3
, cap (
2
,
32
,
62
,
82
,
112
,
132
), the tablet
12
, and water or fluid) can be sold with an additional sipper top (not shown) so that the drink can easily be resealed once ready for drinking. Preferably the tablet
12
is of known type that is effervescent and/or easily dissolvable in water or a liquid.
Also, it will be appreciated that the above described holder (
6
,
86
,
106
) is a ‘use once’ variety. However, the remaining elements of the cap (
2
,
32
,
62
,
82
,
112
,
132
) and container
3
may be refused, if so desired. However, the materials and construction of these components are of such a nature that the cap (
2
,
32
,
62
,
82
,
112
,
132
) and container
3
may be for a use once drink, at a reasonable price for the overhead of the cost of the container
3
in the cost of the drink.
The invention has been discussed above with a number of embodiments for the collar (
5
,
85
,
105
,
205
,
305
) and the pushing lever (
96
,
216
,
316
), it will be appreciated that these may be used in various combinations from the range of embodiments, without departing from the scope of the invention.
Aspects of the present invention have been described by way of example only and it should be appreciated that modifications and additions may be made thereto without departing from the scope thereof.
Claims
- 1. For a container having an opening with a rim, a cap for retaining a product to be released into the container as desired, the cap comprising:a holder having a flexible top and a membrane-like base sealed together about a common circumferential edge to envelop the product; a collar removably fixable about the opening, the collar having a flange for abutting the circumferential edge to fix the holder between the flange and the rim of the container, the base being positioned inwardly of the flexible top to provide a liquid impermeable seal over the opening; a cutting edge positioned inwardly of the base to circumscribe at least a part of the product; and configured such that when pushed inwards, the top of the holder deforms to press the base of the holder against the cutting edge, cutting open the base to release the product into the container; the opening being sealed by means of the top after the base has been cut open; and such that after the collar has been removed, the opening is resealable by the top when the collar is replaced.
- 2. The cap of claim 1 wherein the cutting edge is formed in a saw tooth pattern.
- 3. The cap of claim 1 wherein the cutting edge is formed on a cutting ring fixed between the rim and the base.
- 4. The cap of claim 1 further including a removable cover extending over the top of the holder for preventing unwanted opening of the base of the holder.
- 5. The cap of claim 1 further including a digit-engaging element fixed to the collar outwardly of the top of the holder, wherein the digit-engaging element contacts the top, deforming the top to press the base of the holder against the cutting edge, cutting open the base to release the product into the container.
- 6. The cap of claim 5 further including an outer side portion covering the top of the holder, and wherein the digit-engaging element is formed integrally with the collar and includes a button fixed to a resilient hinge formed by a cut-out section of the outer side portion.
- 7. The cap of claim 6 wherein the button is formed at the end of a pedestal fixed to the resilient hinge.
- 8. The cap of claim 1 wherein the base includes an annular section of reduced strength at least partially circumscribing the product.
- 9. The cap of claim 1 further including a second membrane extending over the opening and positioned inside the base and having a rupture strength equal to or less than that of the base.
- 10. The cap of claim 1 further including an annular seal for sealing engagement with the rim.
- 11. The cap of claim 1 wherein the collar is internally threaded for engagement with a externally threaded neck surrounding the opening of the container.
- 12. The cap of claim 1 wherein a liquid drink component is held in the container, and the product is in the form of a tablet.
- 13. An apparatus for retaining a product to be released into a container as desired, including a container having an opening with a rim and a cap removably fixable to the container to close the opening, the cap comprising:a holder having a flexible top and a membrane-like base sealed together about a common circumferential edge to envelop the product; a collar removably fixable about the opening, the collar having a flange abutting the circumferential edge to fix the holder between the flange and the rim of the container, the base being positioned inwardly of the flexible top to provide a liquid impermeable seal over the opening; a cutting ring positioned inwardly of the base, the cutting ring having a cutting edge circumscribing at least a part of the product; and configured such that when pushed inwards, the top of the holder deforms to press the base of the holder against the cutting edge, cutting open the base to release the product into the container; the opening being sealed by means of the top after the base has been cut open; and such that after the collar has been removed, the opening is resealable by the top when the collar is replaced.
- 14. The apparatus of claim 13 wherein the cutting edge is formed in a saw tooth pattern.
- 15. The apparatus of claim 13 further including a removable cover extending over the top of the holder for preventing unwanted opening of the base of the holder.
- 16. The apparatus of claim 15 wherein the cap further includes a digit-engaging element fixed to the collar outwardly of the top of the holder, the digit-engaging element contacting the top, deforming the top to press the base of the holder against the cutting edge, thereby cutting open the base to release the product into the container.
- 17. The apparatus of claim 16 wherein the cap further includes an outer side portion to cover the top of the holder, and wherein the digit-engaging element is formed internally with the collar and includes a button fixed to a resilient hinge formed by a cut-out section of the outer side portion.
- 18. The apparatus of claim 17 wherein the button is formed at the end of a pedestal fixed to the resilient hinge.
- 19. The apparatus of claim 18 further including a second membrane extending over the opening and positioned inside the base and having a rupture strength equal to or less than that of the base.
- 20. The apparatus of claim 19 further including an annular seal of sealing engagement with the rim.
- 21. The apparatus of claim 20 wherein the cap includes an internally threaded collar for engagement with a corresponding externally threaded neck surrounding the opening of the container.
- 22. The apparatus of claim 21 wherein a liquid drink component is held in the container, and the product is in the form of a tablet.
- 23. An apparatus for retaining a product to be released into a container as desired, including a container having an opening with a rim and a cap removably fixable to the container to close the opening, the cap comprising:a holder having a flexible top and a membrane-like base sealed together about a common circumferential edge to envelop the product; a collar removably fixable about the opening, the collar having a flange abutting the circumferential edge to fix the holder between the flange and the rim of the container, the base being positioned inwardly of the flexible top to provide a liquid impermeable seal over the opening; a cutting ring positioned inwardly of the base, the cutting ring having a serrated cutting edge circumscribing at least a part of the tablet; a removable cover extending over the top of the holder for preventing unwanted opening of the base; a pusher formed in an outer side of the cap covering the top of the holder, the pusher being in the form of a resilient hinge formed by a cut-out section of the outer side, and adapted such that when pushed inwards, the pusher contacts the top, deforming the top to press the base of the holder against the cutting edge, cutting open the- base to release the product into the container; the opening being sealed by means of the top after the base has been cut open; and such that after the cap has been removed, the opening is resealable by the top when the cap is replaced.
Priority Claims (2)
Number |
Date |
Country |
Kind |
332745 |
Nov 1998 |
NZ |
|
335575 |
May 1999 |
NZ |
|
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/NZ99/00185 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO00/27717 |
5/18/2000 |
WO |
A |
US Referenced Citations (13)
Foreign Referenced Citations (6)
Number |
Date |
Country |
199959309 |
May 2000 |
AU |
29800794 |
Mar 1998 |
DE |
2 290 366 |
Jun 1976 |
FR |
08091418 |
Apr 1996 |
JP |
WO9800348 |
Jan 1998 |
WO |
WO9840289 |
Sep 1998 |
WO |