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(11) Patent Number: KE 565

( 45) Date of grant: 28/02/2013
   
(12) PATENT
 
(51)    Int.Cl.8: A 47J 31/30

(21)    Application Number: KE/P/2011/ 001261

(22)    Filing Date: 19/09/2008

(86)    PCT data PCT/EP08/062511 19/09/2008 W020 10/031440 25/03/2010
 
(73)    Owner: BRIZIO, Adriana of Via Ceresio, 18 CH-6977 Ruvigliana, Switzerland

(72)    Inventor: BRIZIO, Adriana, Via Ceresio, 18 CH-6977 Ruvigliana, Switzerland

(7 4) Agent/address for correspondence:Kaplan & Stratton Advocates, P.O. Box 40111-00100, Nairobi
 
(54)    Title: CAN FOR THE EXTEMPORANEOUS PREPARATION OF BEVERAGES BY EXTRACTION AND/OR INFUSION, PROVIDED WITH A SAFETY LID

(57)    Abstract:

The can (10; lOA; lOB; 10C) for the extemporaneous preparation of beverages by extraction and/or infusion comprises a first chamber (12) intended to collect the fmal beverage, a second chamber (14) containing a drinkable liquid and a filtering device (16) containing a substance able to produce the required beverage by extraction and/or infusion. The can is foreseen to be put onto a heating source after opening the can lid (18; 18A, 18B; 18C) and operating the filtering device (16) by the user. The lid (18; 18A, 18B; 18C) comprises: an outer rim portion (22; 22B) intended to remain fiXed to the can lateral wall (20) when opening the can; an inner removable portion (24; 24A; 24B; 24C) intended to be ripped in order to open the can; and a predetermined breaking line (34) separating said inner removable portion (24; 24A; 24B; 24C) from said outer rim portion (22; 22B). The breaking line (34) is provided in an annular portion (28; 28A; 28B; 28C) forming patt of the lid (18; 18A, 18B; 18C) and made of plastic material. The outer part (32; 32B) of the atmular portion (28; 28A; 28B; 28C) is part of the outer rim portion (22; 22B) while the inner part thereof (24; 24A; 24B; 24C) is patt of the itmer removable portion (24; 24A; 24B;24C).

CAN FOR THE EXTEMPORANEOUS PREPARATION OF BEVERAGES

BY  EXTRACTION  AND/OR  INFUSION,  PROVIDED  WITH  A  SAFETY

LID.

5    The present invention relates to a can usable for the extemporaneous preparation of beverages by extraction and/or infusion().

Cans for the  extemporaneous  preparation  of beverages  by extraction

and/or infusion are disclosed in EP-A-161 0657 and have been recently

launched on the  market. Said  cans have a first chamber intended to

10    collect the final beverage, a second chamber containing a drinkable liquid and a filtering device containing a substance able to produce the required beverage by extraction and/or infusion. The first chamber is closed by the can lid.

Said cans are foreseen to be put onto a heating source after opening the

15    lid and operating the filter by the user. To this purpose, the lid has an outer rim portion, intended to remain fixed to the can vertical wall when

opening the can, and an inner removable portion, intended to be ripped

by pulling a tab, provided on the lid, in order to open the can, a groove

being  provided  between  said  inner and  outer portions  to  reduce  the

20    thickness and consequently the resistance of the lid structure, so as to enable the hand-ripping of the aforesaid inner portion.

The user, therefore, will pull the tab to partially or totally rip the lid and slip

a hand into the can to move the filter device in a given direction, thereby

putting the liquid contained  in the second chamber in contact with the

25    substance contained in the filtering device.
 

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Upon completion of the aforementioned operations, the user will put the can onto a heating source. In this way, by effect of the pressure increase due to heating, the liquid will be forced to move from the second chamber to the first chamber passing through the substance contained in the filter

5    device and forming an extemporaneously prepared beverage.

This quite new kind of cans has remarkable risks as far as safety is concerned, some risks being in common with the traditional cans, while others being connected to the specific use of the more recent cans above

described

10    An incommensurable number of traditional cans, containing conserved food or ready-to-drink beverages, are currently offered on the market.

They all are provided with a usual lid which is seamed to the can vertical

wall, the lid having an outer rim portion, intended to remain fixed to the

can vertical wall when opening the can, and an inner removable portion,

15    intended to be ripped by pulling a tab, in order to open the can, a groove being provided between said inner and outer portions so as to enable the hand-ripping of the aforesaid inner portion.

The most important disadvantage of the aforesaid traditional cans is that,

once the inner portion of the lid has been ripped up, the rim portion which

20    remains attached to the vertical can wall, as well as the removed portion, will have sharp edges, so that there is a serious risk of cutting when the

user is handling the can to reach the food or beverage contained therein, or when disposing said can. So far, no effective solution to this problem has been found, in spite of the huge value of the involved market branch.

25    Some countries are nowadays planning to pass a rule establishing that
 

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the lid removable portion can be pushed only inside the can and cannot be pulled outwards. Thus, the problem of ensuring safety when the user inserts her/his hand into the can, whether just by mistake or for reaching the food contained therein, as well as when the user is bringing the can to

5    her/his mouth, is not overcome.

At the same time another remarkable problem connected to the specific use of the more recent cans above described, is that the can is foreseen to be put onto a heating source to form an extemporaneous beverage.

It may happen that the user inadvertently puts the can onto the heating

10    source without having previously opened the can lid. In this case, because of the inside liquid transforming into steam, the pressure inside the can may reach very high values, such as to cause the blast of the can. The traditional safety means for discharging the inner pressure, as the

known exhausting valves which are usually provided onto the lateral walls

15    of those containers which have the risk of inner overpressure (e.g. moka coffee-makers or pressure cookers), do not comply with the requirements of easy handling, safe packaging a•nd reduced costs, which occur in cans destined to the large-scale distribution.
The present invention aims to solve the problem of ensuring safety when

20    manipulating the lid, as well as to prevent the can from blasting. According to the present invention, the first problem is solved by a can for

the extemporaneous preparation of beverages by extraction and/or infusion, the can being provided with a lid which is seamed to the lateral can wall, the lid comprising: an outer rim portion intended to remain fixed

25    to the can lateral wall when opening the can, an inner removable portion
 

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intended to be ripped in order to open the can, and a predetermined breaking line separating said inner removable portion from said outer rim portion; characterized in that said breaking line is provided in an annular portion forming part of the lid and made of plastic material, the outer part

5    of the annular portion being part of said outer rim portion, while the inner part of the annular portion being part of said inner removable portion. Therefore, when the inner removable portion of the lid is ripped, since the inner edge of the outer rim portion and the outer edge of the removable inner portion are of plastic material, there is no risk of cutting.

10    Said breaking line preferably comprises a groove or a double groove provided on the outer or on the inner side of the lid, the double groove being formed of two opposite grooves, one groove being provided on the

outer side and the other groove being provided on the inner side of the lid.

Depending on the shape of the grove or double groove provided within

15    the plastic annular portion, the ripping of the inner removable portion will be total when said groove or double groove follows a continuous, circular line. Alternatively, said groove or double groove may be interrupted or may be less deep in one tract, such that the inner removable portion remains partially attached to the outer rim portion.

20    In any case, once the can has been opened, the user may safely manipulate it.

As mentioned above, the present invention aims also to solve the problem of the can blasting when the user inadvertently omits to open the can lid before putting the same can onto a heating source.
 

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In order to achieve also this aim, the can according to the present invention, comprises tearing means for discharging the inner pressure when the inner pressure exceeds a predetermined value, said tearing means being provided in the annular plastic part or in the removable lid

5    inner portion, if made of plastic material, or in the outer rim portion, id made of plastic material, thereby preventing the can from blasting. Preferably said tearing means comprise one or more thinner zones able to tear when the inner pressure exceeds said predetermined value ..

In  a  preferred  embodiment,  the  tearing  means  are  obtained  by

10    conveniently reducing the thickness of one or more small zones within said plastic component or components, thus forming one or more membranes able to tear at a given can inner pressure. It has to be pointed

out, however, that the tearing zone can corresponding totally or partially to

the aforesaid breaking line, so that it has a double function, i.e. to allow

15    the opening of the can lid and to provide safety tearing means. Conveniently the aforesaid tearing means will be positioned and will have a shape such as to discharge the inner pressure in a direction

substantially parallel to the can lid.

The  invention  will  be  more  easily  understood  from  the  following

20    description of some embodiments, given merely by way of example, of the can according to the present invention, taken in conjunction with the accompanying drawings, in which:

Fig. 1 is an axial cross-section of a first embodiment of a can according to

the invention, in the condition in which it is supplied to the user;

25    Fig. 2 is a perspective view of the upper part of the can of Fig. 1;
 

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Fig. 3 is an axial cross-section of the upper part of a second embodiment

of a can according to the invention;

Fig. 4 shows the situation after removing the inner portion of the lid of the can of Fig. 3;

s Fig. 5 is similar to Fig. 3, but with the inner removable portion of the lid only partially ripped and still partially attached to the outer rim portion of the lid;

Fig. 6 shows another embodiment of the can according to the invention, in which the outer rim portion, the inner removable portion and the plastic

10    annular portion are made in one piece of the same plastic material;

Fig. 7 shows a further embodiment in which the inner removable portion and the annular portion are made in one piece of plastic material, the

annular portion comprising ripping means;

Fig. 8 is a view from the bottom of only the one piece of Fig. 7, comprising

15    the inner portion, the removable portion and the ripping means.

As can be seen in Fig. 1, a can 1 0 comprises a first chamber 12 intended to collect the final beverage, a second chamber 14 containing a drinkable liquid, and a filtering device 16 containing a substance able to produce the required beverage by extraction and/or infusion. The can 10 is provided

20    with a lid 18 which is seamed to the can vertical wall 20. The Lid 18 has an outer rim portion 22 intended to remain fixed to the can vertical wall 20 when opening the can 10, and an inner removable portion 24 intended to be ripped by pulling a conventional tab 26 in order to open the can 10. A plastic annular part 28 is interposed between the outer rim portion 22 and
 

25    the inner removable portion  24, the outer side part 30  of said plastic
 

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annular part 28 being fixed to the inner perimeter of the outer rim portion 22 (part 30 being actually part of the rim portion 22) while the inner side part 32 of the annular portion 28 is fixed to the perimeter of the inner removable portion 24 (part 32 being actually part of the inner removable

5    portion 24). A thinner zone or double grooves 34 is provided within the plastic annular portion 28, in which the resistance of the lid structure is reduced, the thinner zone separating said inner (32) and outer (30) side parts, thus enabling the hand-ripping (by means of the tab 26) of the aforesaid inner portion 24, 32. The plastic annular portion 28 is shaped

10    (see Fig. 1) such as to be connected to the remaining .portion of the lid (18).
In the can 1OA of Fig. 3 the inner removable portions 24A and 32A of the

lid 18A are made of plastic material, are integral with the plastic annular

portion 28A. A tab 26 is also provided. When the removable inner portions

15    24A and 32A have been ripped away by means of the tab 26, the can 1OA appears to be open, as shown in Fig. 4.

Coming back to the can 10, it has to be pointed out that the removable inner portions 24, 32 can be only partially ripped away, so that the

removable inner portions 24, 32 are still partially connected to the outer

20    rim portions 22, 30 of the lid 18, as shown in Fig. 5.

The can 1OB shown in Fig. 6 has a lid 18B in one piece, the portions 22B, 28B and 24B thereof being consequently made of the same plastic material. In particular, the inner side part 32B of the annular portion 28B is integral with the remaining part (24B) of the removable inner portion (24B,
 

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328)    whereas the outer side part 308 is integral with the remaining part

(308)    of the outer rim portions (228; 30B).

The  can  1OC  in  Fig.  7 is  similar to the can  1OA in  Fig.  3,  with  the

difference that the lid 18C is provided with the above mentioned tearing

5    means comprising, in the specific case, four thinner zones 36 (see also Fig. 8) which tears when the pressure in the can 1OC exceeds a predetermined value. It has to be pointed out that when the discharge jets

through  zones  36  tear,  they  are  directed  substantially parallel  to  the

bottom of the inner removable portion 24C.

10    It should be evident that tearing zones can be provided also in the plastic portions (28; 28A, 24A; 228, 288248 respectively) of other cans (10; 10A; 108 respectively) disclosed above. In particular the groove 34 itself can be a tearing means.
 

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CLAIMS

1-. A can (1 0; 1OA; 108; 1OC) for the extemporaneous preparation of beverages by extraction and/or infusion, a comprising a first chamber (12), the can having a lid (18; 18A, 188; 18C) intended to collect the final

5    beverage, a second chamber (14) containing a drinkable liquid and a filtering device (16) containing a substance able to produce the required beverage by extraction and/or infusion, the can being foreseen to be put onto a heating source after opening the can lid (18; 18A, 188; 18C) and

operating the filtering device (16) by the user, the lid (18; 18A, 188; 18C) 10 •  comprising: an outer rim portion (22; 2?8) intended to remain fixed to the can lateral wall (20) when opening the can; an inner removable portion (24; 24A; 248; 24C) intended to be tipped in order to. open the can; and a predetermined breaking line (34) separating said inner removable portion (24; 24A; 248; 24C) from said outer rim portion (22; 228) ; characterized

15    in that said Qreaking line (34) is provided in an annular portion (28; 28A; 288; 28C) forming part of the lid (18; 18A, 188; 18C) and made of plastic material, the outer part ( 30; 308) of the annular portion (28; 28A; 288;

28C) being part of the outer rim portion• (22; 228) while the inner part (32;

328;  32C) thereof being part of the inner removable portion (24;  24A;

20    248; 24C).   .

2.    The can (1 0; 1OA; 108; 1OC) according to claim 1, wherein the breaking line is a groove or two opposing grooves (34).
3.    The can (1 0; 1OA; 108; 1OC) according to claim 1, wherein the breaking line (34) is encircling the whole perimeter of the removable inner
 

25    248; 24C).

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