CA2071893A1 - Coffee infusion filter for preparing cup-sized portions of filter coffee - Google Patents
Coffee infusion filter for preparing cup-sized portions of filter coffeeInfo
- Publication number
- CA2071893A1 CA2071893A1 CA 2071893 CA2071893A CA2071893A1 CA 2071893 A1 CA2071893 A1 CA 2071893A1 CA 2071893 CA2071893 CA 2071893 CA 2071893 A CA2071893 A CA 2071893A CA 2071893 A1 CA2071893 A1 CA 2071893A1
- Authority
- CA
- Canada
- Prior art keywords
- coffee
- folding
- filter
- coffee making
- shaped member
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/02—Coffee-making machines with removable extraction cups, to be placed on top of drinking-vessels i.e. coffee-makers with removable brewing vessels, to be placed on top of beverage containers, into which hot water is poured, e.g. cafe filter
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
COFFEE MAKING FILTER FOR THE PREPARATION OF A CUP PORTION
OF FILTER COFFEE
For the preparation of a cup portion of filter coffee the coffee making filter (100) comprises a shaped member (10) con-structed in the form of a cylindrical hollow body (11) of a filter paper possessing an adequate inherent rigidity and na-tural stability when acted upon by water, having an upper wa-ter filling aperture (15) for filling with boiling hot water, the interior of the shaped member (10) being divided into several superposed chambers (30,130,230), of which the upper chamber (30) terminates in the water filling aperture (15) as boiling water receiving chamber, the center chamber (130) accommodates a cup portion (40) of ground coffee supported on the lower partition (120) and the bottom chamber (230) serves to drain off the filter coffee. For brewing a cup of coffee, the coffee making filter (100) is stood into a coffee cup and boiling hot water is poured into the water filling aperture (15) of the shaped member (10), while, during the coffee making process, the coffee making filter (100) with a rising level of filter coffee in the interior of the coffee making filter (100) does not float (Fig. 1).
COFFEE MAKING FILTER FOR THE PREPARATION OF A CUP PORTION
OF FILTER COFFEE
For the preparation of a cup portion of filter coffee the coffee making filter (100) comprises a shaped member (10) con-structed in the form of a cylindrical hollow body (11) of a filter paper possessing an adequate inherent rigidity and na-tural stability when acted upon by water, having an upper wa-ter filling aperture (15) for filling with boiling hot water, the interior of the shaped member (10) being divided into several superposed chambers (30,130,230), of which the upper chamber (30) terminates in the water filling aperture (15) as boiling water receiving chamber, the center chamber (130) accommodates a cup portion (40) of ground coffee supported on the lower partition (120) and the bottom chamber (230) serves to drain off the filter coffee. For brewing a cup of coffee, the coffee making filter (100) is stood into a coffee cup and boiling hot water is poured into the water filling aperture (15) of the shaped member (10), while, during the coffee making process, the coffee making filter (100) with a rising level of filter coffee in the interior of the coffee making filter (100) does not float (Fig. 1).
Description
COFFEE MAKING FILTER FOR THE PREPARATION OF A CUP PORTION
OF FILTER COFFEE
The present invention can be used within the area of preparing cup port;ons of filter coffee and relates to a coffee making or brewing filter for the preparation of at least one cup por-tion of filter coffee.
BACKGROUND OF THE INVENTION
Numerous methods for the preparation of a coffee beverage from roasted and ground coffee beans are known. Apart from the de-coction, which forms the basis of the Turkish-Arab mode of preparation, in which exceedingly finely ground coffee powder is heated to the boil together with cold water and sugar and the grounds then forming in the turgid beverage aredrunk along with it. Whereas, according to the infusion method, coffee powder is brought together with boiling hot water. After having been left to draw, it is strained or filtered while use is made of paper, fabric or metal filters. In the extraction method, a bag fabricated from a pervious fabric of natural or manmade fiber or of toughened filter~paper holding coffee powder is suspended in hot water. Over~and above that, the preparation of coffee beverages by means of an automatic coffee vending machine ~and coffee making nachines is known.
The quality and strength of a coffee beverage depend first and foremost of the type and quality of the raw material employed and of the mode of preparation, the utensils used and of the water. The quantity of-the coffee powder used per cup will be determined very largely by the flavor recluired or desired by the individual, the affluence of the consumers as well as by health-related considerations. The volume of a coffee cup nor-mally r~nges between~130 through 165 ccm. The norm of a cup is assumed to be approximately 15n ccm. For preparing the cof-fee beverage, concentrations of 19 to 3ûg coffee powder per cup of water are recommended. The terms of "weak" and "strong"
coffee fluctuate significantly with regard to their concentra-tions. As "medium-strong coffee", a beverage has to be regar-ded which is prepared from 6 to 89 coffee powder per cup.
Since the contents of an infusion of all the constituents of the roasted bean depends on the composition of the coffee used in each case and the type of preparation, preference is given to such coffee beverages which are prepared by infusing coffee powder with boiling hot water in a filter while use is made of a paper filter.
In the infusion method, the coffee powder is brought into con-tact with boiling hot water outside the receptacle, such as a coffeepot or the like, which holds the filter coffee. The fil-tering of the coffee takes place outside the receptacle, which is is laborious and uneconomical when, by way of example, only one cup is prepared. To this is added the c;rcumstance that no full utilization of the coffee aroma and, inter alia, also of the coffee constituents, is possible.
That is why it is the object of the invention to provide a utensil for the preparat;on of a coffee beverage according to the infusion method~ with the aid of wh;ch a cup of f;lter coffee can be effortlessly and econom;cally produced wh;le ut;l;z;ng the coffee aroma to the fuLl by transferr;ng the f;~ter;ng and coffee mak;ng process ;nto the ;nter;or of the cup .
This technical problem ;s solved by means of the features characterized in the Cla;m 1.
::
SUMMARY OF THE INVENTION
With a coffee making filter constructed in such a way accor-ding to the invention, the preparation of a cup portion of filter coffee ;s transferred into the interior of a coffee cup or some other appropriate receptacle. The filtering pro-cess no longer takes place outside the receptacle, but inside the latter itself. After the coffee making filter has been inserted into a coffee cup, only hot water has to be supplied to the coffee making filter via its water filling aperture, as a result of which the boiling hot water flows through the coffee making filter and is brought into contact with the cup portion of ground coffee disposed in the interior of the fil-ter. The filtering process itself then takes place through the side wall of the shaped member of the coffee making filter, said side wall being comprised of filter paper. The filter coffee produced penetrates the side wall entering into the in-terior of the coffee cup and, subsequent to the quantity of boiling hot water corresponding to the volume of a coffee cup having been supplied to the coffee making filter, said coffee makin fiLter is removed from the cup and a cup of filter cof-fee is avaiLable to be enjoyed. The coffee making fiLter is stood verticalLy in the interior of the cup and, owing to its own weight, does not float so that the coffee making fiLter assumes the function of a stationary filter.
The construction of the shaped member of the coffee making fil-ter is such that the prepared filter coffee issues within the Lower area of the coffee making fiLter into the interior of the cup. The upper area of the shaped member of the coffee making filter is conf;gured in such a way that, when acted upon by water, the shaped member retains its ;nherent r;gidity and naturaL stabiL;ty. Th;s ;s ach;eved ;n that the ;nterior of the shaped member of the coffee mak;ng f;lter ;s div;ded ~ 4 ~ 2071893 into three separate chambers, of which the center chamber accommodates the cup portions of the coffee. The side wall of the shaped member which delimits the upper chamber receiving the hot water is in this case comprised preferably of material that is both impervious to water and water-resistant, wheras the wall sections which delimit the center and bottom chamber, are comprised of commercially available filter paper. Within the area of these chambers, the filter paper is provided with additional stiffening means or reinforcements so as to ensure the inherent stability of the coffee making filter during the coffee making process. However, the possibility also exists of constructing solely the side wall delimiting the bottom chamber so as to be pervious to water so that the filtering process takes place excLusively within the area of the bottom chamber. The means which stiffen or reinforce the side wall of the shaped member of the coffee making filter serve at the same time for increasing the weight of the coffee making fil-ter so as to render the filter incapable of floating during the coffee making process. What is essential though is that the coffee making filter assumes a vertical position in the interior of the cup throughout the entire coffee brewing pro-cess.
The interior formed by the center chamber of the shaped member of the coffee making filter is preferably larger in comparison with the layer taken up by the cup portion of ground coffee.
Thereby the advantage is gained that, dur;ng the making of .
the coffee, the coffee powder in this center chamber floats and is distributed in the rising water, as a result of which a full utilization of the aroma of the coffee is brought about.
Apart from a construction of the coffee making filter having three chambers, there also exists the possibility of constructing the shaped member having only two chambers, in which case the top chamber then holds the cup portion of ground coffee.
, :
2~7~893 For the marketing of such a coffee making filter it is then necessary that the upper water filling aperture be closed, the closing means in this case being constructed in such a way that the closure can be removed for the filter to be used.
The boiling hot water is then supplied to the coffee powder direct via the water fiLling aperture of the shaped member.
In a pertinent construction of the shaped member comprised of filter paper, the filtering process then takes place within the area of the bottom chamber or within the area of the two chambers of the coffee making filter.
The technical problem is solved further with the aid of the features stated in the Claim 2. Especially advantageous is in this case the construction of the coffee making filter in the form of a folded member with cup rim engagement slots which render a fitting of the coffee making filter on the rim of the coffee cup possible, in which connection the internal body accommodating the coffee powder, which is Likewise constructed in such a way that it comes to lie above the coffee cup opening or is introduced with a section as far as into the interior of the coffee cup. Due to the foldability, the coffee making fil-ter can be folded so as to take up a minimum of space. In ad-dition, the foLding permits an adaptation of the coffee making filter to all sizes of the coffee cup opening.
Advantageous embodiments of the invention are characterized in the subclaims.
BRIEF DECSRIPTION OF THE DRAWINGS
In the following, embodiment examples of the invent;on are ex-plained in greater detail w;th the aid of the drawings. Thus F i 9. 1 shows the coffee making filter in a diagrammatical view;
~ 6 - 20718~3 F ; 9. 2 shows the coffee mak;ng f;lter ;n a vert;cal longi-tudinal section;
F i g. 3 shows the coffee mak;ng fiLter fitted with an aroma-preserving external wrapper ;n a long;tudinal section;
F ; g. 4 shows, in a diagrammatical view, a coffee making fil-ter with side wall stiffening means disposed in its side wall;
F i g. 5 shows the coffee making filter accord;ng to Fig. 4 in a vertical part;al long;tudinal sect;on;
F i 9. 6 shows, partly ;n a view and partly in a vertical sec-t;on, a coffee cup w;th a coffee making f;lter d;s-posed ;n the latter;
F i g. 7 shows, partly in a view and partly in a vertical sec-tion, a coffee cup with a coffee making f;lter sus-pended therein;
F i g-.~ 8^shows, partly in a view and partly 1n a vertical sec-tion, a further émbodiment of a foldable coffee making ~filter in a sta~te in which it ;s fitted onto a coffee cup; : ~ ~
F~i 9. 9 shows~a view~ from the top of the coffee making filter ; accord~ing~to f;g. 8; ~ ;
F i~g. 1~0 shows~a~vie;w~from~the to;p of~ the coffee ma~png filter in a fo~lded-up~state; ~ ~
F~l 9. 11 shows, in~a~diagr~ammat~ical~view from the top, the coffee making filter in a folded-out, 1.e. set-up state, a n d F i 9. 12 shows, in a side elevat1on, the filter body of the coffee making f1lter.
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
.
The coffee making fiLter identif;ed with 100 in the Figures 1 through 5 serves for the preparat;on of at least one cup portion of filter or drip coffee and comprises a shaped mem-ber 10 constructed in the form of a cyLindrical hollow body 11 with an upper filling aperture 15 for boiling hot water and with a bottom base 13. The shaped member 10 has a circular cross-section, it being possible, however, in this case for the cross-sect;on to also possess another geometric configura-tion~ The upper water filling aperture 15 is delimited by the circumferent;al rim 14 of the shaped member 10. At the bottom, the shaped member 10 may be constructed so as to be either open or closed.
The shaped member 10 and, more particularly, its side wall 16, is comprised of commercially available filter paper which possesses an adequate inherent r;gidity and natural stability of the type which is offered for coffee filters. The inherent rigidity and natural stab;lity of the shaped member 10 is dealt with in greater detail hereinafter.
The interior 12 of the shaped member 10 of the coffee making filter 100 is, by means of two partitions 20,120 of thin fil-ter paper proceeding transversely to the longitudinal direc-tion of the shaped member 10 and disposed at a distance from each other, divided so as to form three superposed chambers 30,130,230, of which the upper chamber 30 terminates in the form of a boiling water receiving chamber into the filling aperture for water 15 ~Figs. 2 and 3). The center chamber 130 serves to accommodate a cup portion 40 of ground coffee, while the layer of coffee 41 rests upon the lower partition 120 ~F;gs. 2,3 and S~. The bottom chamber 230 serves to lead the coffe away. The upper partition 20 may be constructed so as to be plane ~Fig. 2) or also trough-shaped ~Fig. 3). The ' - 8 - 2~718~3 distance between the two partitions 20, 120 may correspond to the he;ght of the layer 41 formed by the cup port;on 40 of ground coffee. However, the possib;lity also exists of dimen-sioning the chamber 13û to be so large that the layer 41 for-med by the cup portion 40 of ground coffee only takes up a part of the space of the chamber 130 so that, when pouring boiling hot water into the coffee making f;lter, the ground coffee or the coffee powder is able to float in the water whis is entering and flood;ng the filter so that it is possible for the full aroma of the coffee to be extracted from the coffee powder.
However, over and above that, according to a further embodi-ment, the possibility also exists, by dispensing with the par-tition 20 in the interior 12 of the shaped member 10, of con-structing only two chambers, v;z. the chambers 30 and 230, in wh;ch case the chamber 30 will then accommodate the cup por-tion 40 of ground coffee.
The side wall 16 of the shaped member 10 is fabricated from commercially available filter paper. At the end, the filter paper is repeatedly turned over and folded on top of each other so that reinforced terminal sections are obta;ned. The side wall 16 of the shaped member 10 may in th;s case be con-structed in such a way that the filtering effect extends across the ent;re s;de wall area of the coffee mak;ng filter 100. A selective filtering is~achieved in that, at least the side~wall section 16c of the side wall 16 which delimits the bottom chamber 230, is compri~sed of filter paper, while the two other side wall sections 16a,16b of the side wall 16 de-limiting the chambers 30,130, are comprised of mater;al that is impervious to water ~Fig. 2~. In this case, the wall sec-tions 16a,16b are fabricated from a tasteless plastic film;
it being also possible to use filter paper laminated with a plastic film or water-repellent impregnated filter paper may :
. ~ .
': :
2~71~3 be empLoyed for the fabrication of the shaped member 10, in which case an imperviousness to water only exists then in the side wall within the area of the two chambers 30,130 so that, in the course of the coffee making process, the boiling hot water supplied to the coffee making filter 100 flows through the coffee powder layer 41 into the bottom chamber 230, so that the filter coffee diffuses through the side wall compri-sed of filter paper of the shaped member 10. Beyond that, it is also possible for the side wall section 16b of the side wall 16 of the shaped member 10, just like the side wall sec-tion 16c, to be comprised of filter paper so that then, in this case, the wall area formed by the side wall sections 16b, 16c serves as the actual filter for the preparation of the filter coffee.
The coffee making f;lter 100 possesses dimensions which are smaller when compared with the internal dimensions of a coffee cup. As far as the height of the coffee making f;lter 100 is concerned, this may, in comparison with the height of a coffee cup, be larger, or also smaller.
In order to increase the inherent rigidity and natural stabili-ty of the shaped member 10, the same is provided with side wall stiffening means or reinforcements 17 which are comprised of rod-shaped plastic sections or of other suitable materials and which are connected with the filter paper forming the side wall 16 of the shaped member 10 (Figs. 4 and 5). These s;de wall reinforcements 17, if the material is appropriately se-lected, serve at the same time to increase the own weight of the coffee making filter 100, so that a rising, floating or lateral tilting of the coffee making filter during the filte-ring process is avoided. The own weight of the shaped member 10 can also be increased by an appropriate selection of the bottom of the shaped member, e.g. by a pertinently thickly dimensioned plastic plate as the bottom of the shaped member.
' - ~ .
The side wall 16 of the shaped member 10 may also be compri-sed of a double layer of filter paper, in which case the side wall reinforcements 17 are disposed between the two layers of filter paper 18,19 (Fig. 5). If shaped members are involved which are constructed so as to be closed at the bottom 10, the bottom chamber 230 may serve to hold a sweeten;ng agent, such as sugar and/or powdered milk. The side wall section 16c of the shaped member 10 which delimits the lower chamber 230, can in that case be separated by means of a separating perfo-ration 60 from the other shaped member portion 16a~16b. By virtue of this design the possibility is offered - if no sugar and/or milk is desired, to obtain only black coffee by removing the shaped member portion which accommodates the chamber 230.
According to a further embodiment according to Fig. 7, the shaped member 10 is provided on its upper circumferential rim 14 with a means 70 for suspending the coffee making filter 100 in a coffee cup 50, in which case this suspending means 50 comprises a collar 71 that can be pointed outwardly, which is circumferential and projects and is compr;sed of a material which is impervious to water which possesses an inherent ri-gidity and a natural stability when acted upon by water, such as plastic film, laminated paper or laminated cardboard, or the like. With~the aid of said suspending means 70, the coffee making filter 100 is suspended in the interior 51 of a cup 50 so that the circumferential collar 51 of the shaped member 10 is supported on the circumferential rim 52 of the cup 50 (Fig. 7). The collar 71 is in this case configured in such a way that a water inflow trough or a funnel-like inlet for the boiling water is formed. Due to the collar 71 being comprised of material which is impervious to water, when boil1ng hot water is poured in the direction of arrow X, the water is routed across the inclinedly proceeding wall area of the col-lar 71 of the water filling aperture 15 so that all the . : .
boiling hot water supplied is directed to the coffee making filter 100. In this embodiment it is advantageous if the sha-ped member 10 of the coffee mak;ng filter 100 possesses a length~ or, relative to the interior 51 of the cup 51, a height which renders possible a free suspension of the coffee making filter 100 in the cup interior 51 without that the cof-fee making filter is supported on the cup bottom 53 in the process. When not readied for use, the collar may be placed aga;nst the side wall 16 of the shaped member 10 by means of folding.
For the protection of the coffee aroma, the shaped member 10 of the coffee making filter 1ûO is provided w;th a wrapper or wrapping 80 constructed in the form of a tear strip package of thin metal foil or from some other suitable material (Fig.
OF FILTER COFFEE
The present invention can be used within the area of preparing cup port;ons of filter coffee and relates to a coffee making or brewing filter for the preparation of at least one cup por-tion of filter coffee.
BACKGROUND OF THE INVENTION
Numerous methods for the preparation of a coffee beverage from roasted and ground coffee beans are known. Apart from the de-coction, which forms the basis of the Turkish-Arab mode of preparation, in which exceedingly finely ground coffee powder is heated to the boil together with cold water and sugar and the grounds then forming in the turgid beverage aredrunk along with it. Whereas, according to the infusion method, coffee powder is brought together with boiling hot water. After having been left to draw, it is strained or filtered while use is made of paper, fabric or metal filters. In the extraction method, a bag fabricated from a pervious fabric of natural or manmade fiber or of toughened filter~paper holding coffee powder is suspended in hot water. Over~and above that, the preparation of coffee beverages by means of an automatic coffee vending machine ~and coffee making nachines is known.
The quality and strength of a coffee beverage depend first and foremost of the type and quality of the raw material employed and of the mode of preparation, the utensils used and of the water. The quantity of-the coffee powder used per cup will be determined very largely by the flavor recluired or desired by the individual, the affluence of the consumers as well as by health-related considerations. The volume of a coffee cup nor-mally r~nges between~130 through 165 ccm. The norm of a cup is assumed to be approximately 15n ccm. For preparing the cof-fee beverage, concentrations of 19 to 3ûg coffee powder per cup of water are recommended. The terms of "weak" and "strong"
coffee fluctuate significantly with regard to their concentra-tions. As "medium-strong coffee", a beverage has to be regar-ded which is prepared from 6 to 89 coffee powder per cup.
Since the contents of an infusion of all the constituents of the roasted bean depends on the composition of the coffee used in each case and the type of preparation, preference is given to such coffee beverages which are prepared by infusing coffee powder with boiling hot water in a filter while use is made of a paper filter.
In the infusion method, the coffee powder is brought into con-tact with boiling hot water outside the receptacle, such as a coffeepot or the like, which holds the filter coffee. The fil-tering of the coffee takes place outside the receptacle, which is is laborious and uneconomical when, by way of example, only one cup is prepared. To this is added the c;rcumstance that no full utilization of the coffee aroma and, inter alia, also of the coffee constituents, is possible.
That is why it is the object of the invention to provide a utensil for the preparat;on of a coffee beverage according to the infusion method~ with the aid of wh;ch a cup of f;lter coffee can be effortlessly and econom;cally produced wh;le ut;l;z;ng the coffee aroma to the fuLl by transferr;ng the f;~ter;ng and coffee mak;ng process ;nto the ;nter;or of the cup .
This technical problem ;s solved by means of the features characterized in the Cla;m 1.
::
SUMMARY OF THE INVENTION
With a coffee making filter constructed in such a way accor-ding to the invention, the preparation of a cup portion of filter coffee ;s transferred into the interior of a coffee cup or some other appropriate receptacle. The filtering pro-cess no longer takes place outside the receptacle, but inside the latter itself. After the coffee making filter has been inserted into a coffee cup, only hot water has to be supplied to the coffee making filter via its water filling aperture, as a result of which the boiling hot water flows through the coffee making filter and is brought into contact with the cup portion of ground coffee disposed in the interior of the fil-ter. The filtering process itself then takes place through the side wall of the shaped member of the coffee making filter, said side wall being comprised of filter paper. The filter coffee produced penetrates the side wall entering into the in-terior of the coffee cup and, subsequent to the quantity of boiling hot water corresponding to the volume of a coffee cup having been supplied to the coffee making filter, said coffee makin fiLter is removed from the cup and a cup of filter cof-fee is avaiLable to be enjoyed. The coffee making fiLter is stood verticalLy in the interior of the cup and, owing to its own weight, does not float so that the coffee making fiLter assumes the function of a stationary filter.
The construction of the shaped member of the coffee making fil-ter is such that the prepared filter coffee issues within the Lower area of the coffee making fiLter into the interior of the cup. The upper area of the shaped member of the coffee making filter is conf;gured in such a way that, when acted upon by water, the shaped member retains its ;nherent r;gidity and naturaL stabiL;ty. Th;s ;s ach;eved ;n that the ;nterior of the shaped member of the coffee mak;ng f;lter ;s div;ded ~ 4 ~ 2071893 into three separate chambers, of which the center chamber accommodates the cup portions of the coffee. The side wall of the shaped member which delimits the upper chamber receiving the hot water is in this case comprised preferably of material that is both impervious to water and water-resistant, wheras the wall sections which delimit the center and bottom chamber, are comprised of commercially available filter paper. Within the area of these chambers, the filter paper is provided with additional stiffening means or reinforcements so as to ensure the inherent stability of the coffee making filter during the coffee making process. However, the possibility also exists of constructing solely the side wall delimiting the bottom chamber so as to be pervious to water so that the filtering process takes place excLusively within the area of the bottom chamber. The means which stiffen or reinforce the side wall of the shaped member of the coffee making filter serve at the same time for increasing the weight of the coffee making fil-ter so as to render the filter incapable of floating during the coffee making process. What is essential though is that the coffee making filter assumes a vertical position in the interior of the cup throughout the entire coffee brewing pro-cess.
The interior formed by the center chamber of the shaped member of the coffee making filter is preferably larger in comparison with the layer taken up by the cup portion of ground coffee.
Thereby the advantage is gained that, dur;ng the making of .
the coffee, the coffee powder in this center chamber floats and is distributed in the rising water, as a result of which a full utilization of the aroma of the coffee is brought about.
Apart from a construction of the coffee making filter having three chambers, there also exists the possibility of constructing the shaped member having only two chambers, in which case the top chamber then holds the cup portion of ground coffee.
, :
2~7~893 For the marketing of such a coffee making filter it is then necessary that the upper water filling aperture be closed, the closing means in this case being constructed in such a way that the closure can be removed for the filter to be used.
The boiling hot water is then supplied to the coffee powder direct via the water fiLling aperture of the shaped member.
In a pertinent construction of the shaped member comprised of filter paper, the filtering process then takes place within the area of the bottom chamber or within the area of the two chambers of the coffee making filter.
The technical problem is solved further with the aid of the features stated in the Claim 2. Especially advantageous is in this case the construction of the coffee making filter in the form of a folded member with cup rim engagement slots which render a fitting of the coffee making filter on the rim of the coffee cup possible, in which connection the internal body accommodating the coffee powder, which is Likewise constructed in such a way that it comes to lie above the coffee cup opening or is introduced with a section as far as into the interior of the coffee cup. Due to the foldability, the coffee making fil-ter can be folded so as to take up a minimum of space. In ad-dition, the foLding permits an adaptation of the coffee making filter to all sizes of the coffee cup opening.
Advantageous embodiments of the invention are characterized in the subclaims.
BRIEF DECSRIPTION OF THE DRAWINGS
In the following, embodiment examples of the invent;on are ex-plained in greater detail w;th the aid of the drawings. Thus F i 9. 1 shows the coffee making filter in a diagrammatical view;
~ 6 - 20718~3 F ; 9. 2 shows the coffee mak;ng f;lter ;n a vert;cal longi-tudinal section;
F i g. 3 shows the coffee mak;ng fiLter fitted with an aroma-preserving external wrapper ;n a long;tudinal section;
F ; g. 4 shows, in a diagrammatical view, a coffee making fil-ter with side wall stiffening means disposed in its side wall;
F i g. 5 shows the coffee making filter accord;ng to Fig. 4 in a vertical part;al long;tudinal sect;on;
F i 9. 6 shows, partly ;n a view and partly in a vertical sec-t;on, a coffee cup w;th a coffee making f;lter d;s-posed ;n the latter;
F i g. 7 shows, partly in a view and partly in a vertical sec-tion, a coffee cup with a coffee making f;lter sus-pended therein;
F i g-.~ 8^shows, partly in a view and partly 1n a vertical sec-tion, a further émbodiment of a foldable coffee making ~filter in a sta~te in which it ;s fitted onto a coffee cup; : ~ ~
F~i 9. 9 shows~a view~ from the top of the coffee making filter ; accord~ing~to f;g. 8; ~ ;
F i~g. 1~0 shows~a~vie;w~from~the to;p of~ the coffee ma~png filter in a fo~lded-up~state; ~ ~
F~l 9. 11 shows, in~a~diagr~ammat~ical~view from the top, the coffee making filter in a folded-out, 1.e. set-up state, a n d F i 9. 12 shows, in a side elevat1on, the filter body of the coffee making f1lter.
:~
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.- - . - . :. - :
; - .::: - .' : :.
:: :
: :
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
.
The coffee making fiLter identif;ed with 100 in the Figures 1 through 5 serves for the preparat;on of at least one cup portion of filter or drip coffee and comprises a shaped mem-ber 10 constructed in the form of a cyLindrical hollow body 11 with an upper filling aperture 15 for boiling hot water and with a bottom base 13. The shaped member 10 has a circular cross-section, it being possible, however, in this case for the cross-sect;on to also possess another geometric configura-tion~ The upper water filling aperture 15 is delimited by the circumferent;al rim 14 of the shaped member 10. At the bottom, the shaped member 10 may be constructed so as to be either open or closed.
The shaped member 10 and, more particularly, its side wall 16, is comprised of commercially available filter paper which possesses an adequate inherent r;gidity and natural stability of the type which is offered for coffee filters. The inherent rigidity and natural stab;lity of the shaped member 10 is dealt with in greater detail hereinafter.
The interior 12 of the shaped member 10 of the coffee making filter 100 is, by means of two partitions 20,120 of thin fil-ter paper proceeding transversely to the longitudinal direc-tion of the shaped member 10 and disposed at a distance from each other, divided so as to form three superposed chambers 30,130,230, of which the upper chamber 30 terminates in the form of a boiling water receiving chamber into the filling aperture for water 15 ~Figs. 2 and 3). The center chamber 130 serves to accommodate a cup portion 40 of ground coffee, while the layer of coffee 41 rests upon the lower partition 120 ~F;gs. 2,3 and S~. The bottom chamber 230 serves to lead the coffe away. The upper partition 20 may be constructed so as to be plane ~Fig. 2) or also trough-shaped ~Fig. 3). The ' - 8 - 2~718~3 distance between the two partitions 20, 120 may correspond to the he;ght of the layer 41 formed by the cup port;on 40 of ground coffee. However, the possib;lity also exists of dimen-sioning the chamber 13û to be so large that the layer 41 for-med by the cup portion 40 of ground coffee only takes up a part of the space of the chamber 130 so that, when pouring boiling hot water into the coffee making f;lter, the ground coffee or the coffee powder is able to float in the water whis is entering and flood;ng the filter so that it is possible for the full aroma of the coffee to be extracted from the coffee powder.
However, over and above that, according to a further embodi-ment, the possibility also exists, by dispensing with the par-tition 20 in the interior 12 of the shaped member 10, of con-structing only two chambers, v;z. the chambers 30 and 230, in wh;ch case the chamber 30 will then accommodate the cup por-tion 40 of ground coffee.
The side wall 16 of the shaped member 10 is fabricated from commercially available filter paper. At the end, the filter paper is repeatedly turned over and folded on top of each other so that reinforced terminal sections are obta;ned. The side wall 16 of the shaped member 10 may in th;s case be con-structed in such a way that the filtering effect extends across the ent;re s;de wall area of the coffee mak;ng filter 100. A selective filtering is~achieved in that, at least the side~wall section 16c of the side wall 16 which delimits the bottom chamber 230, is compri~sed of filter paper, while the two other side wall sections 16a,16b of the side wall 16 de-limiting the chambers 30,130, are comprised of mater;al that is impervious to water ~Fig. 2~. In this case, the wall sec-tions 16a,16b are fabricated from a tasteless plastic film;
it being also possible to use filter paper laminated with a plastic film or water-repellent impregnated filter paper may :
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2~71~3 be empLoyed for the fabrication of the shaped member 10, in which case an imperviousness to water only exists then in the side wall within the area of the two chambers 30,130 so that, in the course of the coffee making process, the boiling hot water supplied to the coffee making filter 100 flows through the coffee powder layer 41 into the bottom chamber 230, so that the filter coffee diffuses through the side wall compri-sed of filter paper of the shaped member 10. Beyond that, it is also possible for the side wall section 16b of the side wall 16 of the shaped member 10, just like the side wall sec-tion 16c, to be comprised of filter paper so that then, in this case, the wall area formed by the side wall sections 16b, 16c serves as the actual filter for the preparation of the filter coffee.
The coffee making f;lter 100 possesses dimensions which are smaller when compared with the internal dimensions of a coffee cup. As far as the height of the coffee making f;lter 100 is concerned, this may, in comparison with the height of a coffee cup, be larger, or also smaller.
In order to increase the inherent rigidity and natural stabili-ty of the shaped member 10, the same is provided with side wall stiffening means or reinforcements 17 which are comprised of rod-shaped plastic sections or of other suitable materials and which are connected with the filter paper forming the side wall 16 of the shaped member 10 (Figs. 4 and 5). These s;de wall reinforcements 17, if the material is appropriately se-lected, serve at the same time to increase the own weight of the coffee making filter 100, so that a rising, floating or lateral tilting of the coffee making filter during the filte-ring process is avoided. The own weight of the shaped member 10 can also be increased by an appropriate selection of the bottom of the shaped member, e.g. by a pertinently thickly dimensioned plastic plate as the bottom of the shaped member.
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The side wall 16 of the shaped member 10 may also be compri-sed of a double layer of filter paper, in which case the side wall reinforcements 17 are disposed between the two layers of filter paper 18,19 (Fig. 5). If shaped members are involved which are constructed so as to be closed at the bottom 10, the bottom chamber 230 may serve to hold a sweeten;ng agent, such as sugar and/or powdered milk. The side wall section 16c of the shaped member 10 which delimits the lower chamber 230, can in that case be separated by means of a separating perfo-ration 60 from the other shaped member portion 16a~16b. By virtue of this design the possibility is offered - if no sugar and/or milk is desired, to obtain only black coffee by removing the shaped member portion which accommodates the chamber 230.
According to a further embodiment according to Fig. 7, the shaped member 10 is provided on its upper circumferential rim 14 with a means 70 for suspending the coffee making filter 100 in a coffee cup 50, in which case this suspending means 50 comprises a collar 71 that can be pointed outwardly, which is circumferential and projects and is compr;sed of a material which is impervious to water which possesses an inherent ri-gidity and a natural stability when acted upon by water, such as plastic film, laminated paper or laminated cardboard, or the like. With~the aid of said suspending means 70, the coffee making filter 100 is suspended in the interior 51 of a cup 50 so that the circumferential collar 51 of the shaped member 10 is supported on the circumferential rim 52 of the cup 50 (Fig. 7). The collar 71 is in this case configured in such a way that a water inflow trough or a funnel-like inlet for the boiling water is formed. Due to the collar 71 being comprised of material which is impervious to water, when boil1ng hot water is poured in the direction of arrow X, the water is routed across the inclinedly proceeding wall area of the col-lar 71 of the water filling aperture 15 so that all the . : .
boiling hot water supplied is directed to the coffee making filter 100. In this embodiment it is advantageous if the sha-ped member 10 of the coffee mak;ng filter 100 possesses a length~ or, relative to the interior 51 of the cup 51, a height which renders possible a free suspension of the coffee making filter 100 in the cup interior 51 without that the cof-fee making filter is supported on the cup bottom 53 in the process. When not readied for use, the collar may be placed aga;nst the side wall 16 of the shaped member 10 by means of folding.
For the protection of the coffee aroma, the shaped member 10 of the coffee making filter 1ûO is provided w;th a wrapper or wrapping 80 constructed in the form of a tear strip package of thin metal foil or from some other suitable material (Fig.
3). ~y means of a tear strip thread 81 or an appropriately constructed separating perforation, the wrapper 80 can be r;pped open and is detachable from the coffee making filter so that the coffee making filter freed from the wrapper can be employed for the preparat;on of a portion filter coffee s;mply by plac;ng the coffee making filter 100 into a cup 50, whereupon boil;ng hot water is then supplied in the d;rection of arrow X v;a the water filling aperture to the interior 12 of the shaped member 10 of the coffee making f;lter 100 (Fig.
6). The discharge of the filter coffee takes place in the direction of arrow X1 (Fig. 6).
The water filling aperture 15 of the shaped member 10 can be covered with the aid of a foil of metallic material or some other tasteless plast;c. This preferably cap-l1ke-constructed foil is then retained by means of a separat;ng perforat;on 91 on the side wall 16 of the shaped member 10 (Fig. 2). If the shaped member 10 of the coffee making filter 100 ;s provided with a wrapper 80 constructed in the form of a tear strip package for the protection of the coffee aroma, ;n that case ::
.
~0718~3 the fo;l 90 which seals the water filling aperture 15 can be connected to said wrapper 80 in a deparable manner so that, subsequent to the foil 90 being severed, the coffe making fil-ter 100 can be removed from the wrapper 80, which corresponds to the profiling and external dimensions of the shaped mem-ber 10 of the coffee making filter 100.
All the materials used for the fabrication of the shaped mem-ber 10 are of a tasteless type and do not affect the aroma of the coffee in the coffee making filter 100 in any way. The partitions 20,30 may be constructed in the form of insert mem-bers and are, with the aid of su;table connecting means, re-tained on the ;nner wall area of the s;de wall 16 of the shaped member 10. The construction of the chambers 30,130,230 may al-so be effected wh;le use ;s made of two insert members which are dimensioned which are d;mensioned so as to be of d;fferent lengths and retained in the interior 12 of the shaped member 10. Fig. 7 dep;cts a thusly constructed coffee making filter 100 which, in ;ts interior 12, has two cylindrical insert mem-bers 25,125 which are closed at the bottom, ;n wh;ch case the insert member 125, with its upper circumferentially and pro-jectingly constructed rim 125a, is supported on the upper cir-cumferential rim 14 of the shaped member 10. The bottom of the insert member forms the lower partition 120. In the inte-rior of the insert member 125, the insert member 25 which pos-sesses shorter dimensions, is then disposed which is supported on the c-ircumferent;al rim 125a of the insert member 125 with ts upper circumferential and laterally projecting rim 25a.
The bottom of the insert member 25 forms the partition 20.
Both insert members 25,125 are comprised of filter paper. Due to the differing lengths of the two insert members 25,12i, the center chamber 130 is formed which serves to accommodate the cup portion 40 of ground coffee.
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2071~93 _ 13 The coffee making filter 100 may aLso be dimensioned in such a way that it does not hold merely a sole cup portion of ground coffee. The quantity of coffee powder may also be dimensioned in such a way that more than one cup of coffee ;s obtained, wh;ch is especially of advantage when large-volume cups or other receptacles are involved.
If the shaped member 10 of the coffee making filter 100 is comprised exclusively of f;lter paper, an ecologically compa-tible waste disposal is ensured.
According to the embodiment illustrated in Figs. 8 through 12, the coffee making filter identified with 200 comprises a cy-lindrical external folding member 201 fabricated from a mois-ture-resistant material, such as a cardboard, pasteboard or paper laminated with plastic that possesses an adequate inhe-rent rigidity. In the interior of this folding member 201, a further folding member 220 is to be found which is compr;sed of filter paper and accommodates the quantity of coffee powder which is required for the preparation of a cup portion filter coffee (Fig. 12).
in order to maintain the aroma of the coffee powder when not readied for use, the filter paper is laminated on the outside with an aluminum foil; a different coating for achieving an impe;rviougness to water is also possible. At the bottom, the aluminum foil of the internal folding member 220 is provided with a plurality of small perforations 221. This folding mem-ber 220 may be rigidly connected with the external folding member 201, e.g. w;thin the upper rim area a construction which is removable from the fo~ding member 201 is also posslble.
The top open;ng 222 of the folding member 220 ;s sea~ed by means of a peelable fo;l, e.g~ of a~uminum, in order to ensure an aroma protect;on of the coffee powder in the interior of the fo~ding member 220 over a prolonged period of time. this covering foil is removed for use and for the coffee brewing process so as to expose the filling aperture for hot water.
The external fold;ng member 201 possesses a square or rectan-gular cross-section, each of the four side walls 202,203,204, 205 being provided centrally with a folding line 202a or 203a or 204a or 204a extending on the longitudinal direction of the folding member. so that, on account of said folding lines, the folding member 201 can be folded up so as to take up a minimum of space (Fig. 10). In the utilization state, i.e. in the fol-ded-out state, the folding member 201 is then unfolded in a radial manner (Fig. 11).
The folding member 201 is constructed so as to be open at the top and at the bottom. The upper rim is identified with 201a and the lower rim with 201b. Within the area of the lower rim 201b and within the area of the corner folding lines 202b,203b, 204b,205b, slot-like recesses 205 are prov;ded, while the per-forations 215 constructed on both sides of a corner folding line 202b,203b,204b,205b and extending from the lower rim ver-tically upward are congruent with each other. Oy means of the-se perforations 215, the coffee making filter 200 can be fit-ted onto the upper circumferential rim 52 of a coffee cup 50, while the coffee cup rim 52 en~-ge- into the r-c--s-s 215 (Fig. 8). Due to the circumstance that the external folding member 201 of the coffee making filter 200 possesses wall areas which, w;th the a;d of the folding lines, are variable in their surface, an adaptation of the coffee making filter 200 to dif-ferent coffee cup diameters is possible.
In the folded-out state, the internal folding member 220 pos-sesses the approximate shape of a pyramid having a base which corresponds to the form of the cross-section of the cylindr;-cal folding member 201 ;n the folded-out state. ~he fol~ding member 220, too, is provided with folding lines 222a,223a,224a, 225a proceeding in the longitudinal d;rection of the fold;ng member, wh;ch are formed ;n the folding member side walls 222, 223,224,225 and which extend as far as into the po;nt of the , .
.- , 2~718g3 folding member 201 (Fig. 9~. The bottom end of the folding member 201 is closed. The corner folding l;nes are ldentified with 222b,223b,224b,225b. Owing to the circumstance that the internal folding member 220 and the external folding member 201 possess identical folds, both folding members can be fol-ded up or folded out in the same way. The longitudinal dimen-sioning of both folding members 201,220 relative to each other may be such that, after the coffee making filter 200 has been placed upon the cup rim 52, the internal folding member 220 terminates above the cup interior or extends as far as into the interior of the cup.
The coffee making f;lter 200 results ;n the advantage that, ow;ng to ;ts foldable geometry, ;t can be packed in a space-saving fash;on together w;th coffee powder and, e.g. w;th;n its lower area, with powdered milk and sugar and the like.
In the folded-out state, the coffee making filter adapts to every cup configuration. When not readied for use, the folded-up package is closed on all sides and, subsequent to the top closure having been torn open, the coffee making filter is obtained by the folding out and the coffee making process can be performed by supplying boiling hot water. Owing to the coffee making filter 200~being placed upon the coffee cup rim, it does not stand in the coffee infusion. The aroma of the coffee is thus not impaired in any way. The entire shaped mem-ber which constitutes the coffee making filter 200 can be mauufactured in the form of a folding package and, on account of its radial configuration, possesses a high degree of stabi-lity. During the coffee mak;ng process, the bolling hot water flows through the coffee making f;lter so that pure brewed "filter coffee" collects in the cup.
6). The discharge of the filter coffee takes place in the direction of arrow X1 (Fig. 6).
The water filling aperture 15 of the shaped member 10 can be covered with the aid of a foil of metallic material or some other tasteless plast;c. This preferably cap-l1ke-constructed foil is then retained by means of a separat;ng perforat;on 91 on the side wall 16 of the shaped member 10 (Fig. 2). If the shaped member 10 of the coffee making filter 100 ;s provided with a wrapper 80 constructed in the form of a tear strip package for the protection of the coffee aroma, ;n that case ::
.
~0718~3 the fo;l 90 which seals the water filling aperture 15 can be connected to said wrapper 80 in a deparable manner so that, subsequent to the foil 90 being severed, the coffe making fil-ter 100 can be removed from the wrapper 80, which corresponds to the profiling and external dimensions of the shaped mem-ber 10 of the coffee making filter 100.
All the materials used for the fabrication of the shaped mem-ber 10 are of a tasteless type and do not affect the aroma of the coffee in the coffee making filter 100 in any way. The partitions 20,30 may be constructed in the form of insert mem-bers and are, with the aid of su;table connecting means, re-tained on the ;nner wall area of the s;de wall 16 of the shaped member 10. The construction of the chambers 30,130,230 may al-so be effected wh;le use ;s made of two insert members which are dimensioned which are d;mensioned so as to be of d;fferent lengths and retained in the interior 12 of the shaped member 10. Fig. 7 dep;cts a thusly constructed coffee making filter 100 which, in ;ts interior 12, has two cylindrical insert mem-bers 25,125 which are closed at the bottom, ;n wh;ch case the insert member 125, with its upper circumferentially and pro-jectingly constructed rim 125a, is supported on the upper cir-cumferential rim 14 of the shaped member 10. The bottom of the insert member forms the lower partition 120. In the inte-rior of the insert member 125, the insert member 25 which pos-sesses shorter dimensions, is then disposed which is supported on the c-ircumferent;al rim 125a of the insert member 125 with ts upper circumferential and laterally projecting rim 25a.
The bottom of the insert member 25 forms the partition 20.
Both insert members 25,125 are comprised of filter paper. Due to the differing lengths of the two insert members 25,12i, the center chamber 130 is formed which serves to accommodate the cup portion 40 of ground coffee.
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2071~93 _ 13 The coffee making filter 100 may aLso be dimensioned in such a way that it does not hold merely a sole cup portion of ground coffee. The quantity of coffee powder may also be dimensioned in such a way that more than one cup of coffee ;s obtained, wh;ch is especially of advantage when large-volume cups or other receptacles are involved.
If the shaped member 10 of the coffee making filter 100 is comprised exclusively of f;lter paper, an ecologically compa-tible waste disposal is ensured.
According to the embodiment illustrated in Figs. 8 through 12, the coffee making filter identified with 200 comprises a cy-lindrical external folding member 201 fabricated from a mois-ture-resistant material, such as a cardboard, pasteboard or paper laminated with plastic that possesses an adequate inhe-rent rigidity. In the interior of this folding member 201, a further folding member 220 is to be found which is compr;sed of filter paper and accommodates the quantity of coffee powder which is required for the preparation of a cup portion filter coffee (Fig. 12).
in order to maintain the aroma of the coffee powder when not readied for use, the filter paper is laminated on the outside with an aluminum foil; a different coating for achieving an impe;rviougness to water is also possible. At the bottom, the aluminum foil of the internal folding member 220 is provided with a plurality of small perforations 221. This folding mem-ber 220 may be rigidly connected with the external folding member 201, e.g. w;thin the upper rim area a construction which is removable from the fo~ding member 201 is also posslble.
The top open;ng 222 of the folding member 220 ;s sea~ed by means of a peelable fo;l, e.g~ of a~uminum, in order to ensure an aroma protect;on of the coffee powder in the interior of the fo~ding member 220 over a prolonged period of time. this covering foil is removed for use and for the coffee brewing process so as to expose the filling aperture for hot water.
The external fold;ng member 201 possesses a square or rectan-gular cross-section, each of the four side walls 202,203,204, 205 being provided centrally with a folding line 202a or 203a or 204a or 204a extending on the longitudinal direction of the folding member. so that, on account of said folding lines, the folding member 201 can be folded up so as to take up a minimum of space (Fig. 10). In the utilization state, i.e. in the fol-ded-out state, the folding member 201 is then unfolded in a radial manner (Fig. 11).
The folding member 201 is constructed so as to be open at the top and at the bottom. The upper rim is identified with 201a and the lower rim with 201b. Within the area of the lower rim 201b and within the area of the corner folding lines 202b,203b, 204b,205b, slot-like recesses 205 are prov;ded, while the per-forations 215 constructed on both sides of a corner folding line 202b,203b,204b,205b and extending from the lower rim ver-tically upward are congruent with each other. Oy means of the-se perforations 215, the coffee making filter 200 can be fit-ted onto the upper circumferential rim 52 of a coffee cup 50, while the coffee cup rim 52 en~-ge- into the r-c--s-s 215 (Fig. 8). Due to the circumstance that the external folding member 201 of the coffee making filter 200 possesses wall areas which, w;th the a;d of the folding lines, are variable in their surface, an adaptation of the coffee making filter 200 to dif-ferent coffee cup diameters is possible.
In the folded-out state, the internal folding member 220 pos-sesses the approximate shape of a pyramid having a base which corresponds to the form of the cross-section of the cylindr;-cal folding member 201 ;n the folded-out state. ~he fol~ding member 220, too, is provided with folding lines 222a,223a,224a, 225a proceeding in the longitudinal d;rection of the fold;ng member, wh;ch are formed ;n the folding member side walls 222, 223,224,225 and which extend as far as into the po;nt of the , .
.- , 2~718g3 folding member 201 (Fig. 9~. The bottom end of the folding member 201 is closed. The corner folding l;nes are ldentified with 222b,223b,224b,225b. Owing to the circumstance that the internal folding member 220 and the external folding member 201 possess identical folds, both folding members can be fol-ded up or folded out in the same way. The longitudinal dimen-sioning of both folding members 201,220 relative to each other may be such that, after the coffee making filter 200 has been placed upon the cup rim 52, the internal folding member 220 terminates above the cup interior or extends as far as into the interior of the cup.
The coffee making f;lter 200 results ;n the advantage that, ow;ng to ;ts foldable geometry, ;t can be packed in a space-saving fash;on together w;th coffee powder and, e.g. w;th;n its lower area, with powdered milk and sugar and the like.
In the folded-out state, the coffee making filter adapts to every cup configuration. When not readied for use, the folded-up package is closed on all sides and, subsequent to the top closure having been torn open, the coffee making filter is obtained by the folding out and the coffee making process can be performed by supplying boiling hot water. Owing to the coffee making filter 200~being placed upon the coffee cup rim, it does not stand in the coffee infusion. The aroma of the coffee is thus not impaired in any way. The entire shaped mem-ber which constitutes the coffee making filter 200 can be mauufactured in the form of a folding package and, on account of its radial configuration, possesses a high degree of stabi-lity. During the coffee mak;ng process, the bolling hot water flows through the coffee making f;lter so that pure brewed "filter coffee" collects in the cup.
Claims (21)
1. Coffee making filter for the preparation of at least one cup portion of filter coffee, characterized in that the coffee making filter (100) comprises a shaped member (10) constructed in the form of a cylindrical hollow body (11) and provided with a bottom base (13), with an upper water filling aperture (15) of filter paper possessing, when acted upon by water, an adequate inherent rigidity and natural stability, wherein the interior (12) of the shaped member (10) is divided by means of two partitions (20,120) proceeding transversally to the longitudinal direction of the shaped member (10) of thin filter paper while forming three superposed chambers (30,130,230), of which the upper chamber (30) terminates in the form of boiling water recei-ving chamber in the water filling aperture (15), the center chamber (130) accommodates a cup portion (40) of ground coffee supported on the lower partition (120) and the bottom chamber (230) serves to drain off the filter coffee, in which the wall section (16a) of the shaped member (10) wi-thin the area of the upper chamber (30) and/or the center chamber (130) is comprised of a material impervious to water or the filter paper within the area of these chambers (30,130) is provided with a tasteless, water-impervious coating by means of a plastic film or impregnation and in that the shaped member (10) has dimensions which are smal-ler when compared with the internal dimensions of the cup and is provided with an own weight which prevents a floating and a positional change during the filtering process
2. Coffee making filter for the preparation of at least one cup portion filter coffee, characterized in that the coffee making filter (200) comprises an external cylindrical fol-ding member (201) open at both sides of a moisture-resistant _ 17 -material with folding lines (202a,203a,204a,205a;202b,203b, 204b,205b) formed in the folding member side walls (202, 203,204,205) and proceeding in the longitudinal direction of the folding member, and an internal folding member (220) of filter paper disposed in the interior of the external folding member (201) which accommodates a portion coffee powder and has a water filling aperture (222), wherein the internal folding member (220) is constructed so as to be closed at the bottom and possesses a profiling correspon-ding to the cross-sectional shape of the external folding member (201) and a plurality of folding lines (202a,203a, 204a,205a;202b,203b,204b,205b) corresponding to the number of folding lines (222a,223a,224a,225a;222b,223b,224b,225b) of the external folding member (201), in which the folding lines of the two folding members (201,220) are congruently located opposite each other and alternately render possible an inward fold and an outward fold in such a way that, by the retraction of two opposing side walls, the coffee ma-king filter (200) can be folded up so as to take up a mini-mum of space and can be folded out for use, in that the external folding member (201), on its lower rim (201b), is provided with a plurality of slot-shaped perforations (215) for engagement into the cup rim when the coffee making fil-ter (200) is placed onto the cup rim, said perforations (215) terminating in the rim (201b) and proceeding in the longitudinal direction of the folding member, and in that the internal folding member (220) is of a length which cor-responds to the length of the external folding member (201) or which, in comparision with the length of the external folding member (201), is greater.
3. Coffee making filter according to Claim 1, characterized in that the shaped member (10) is constructed so as to be open at the bottom.
4. Coffee making filter according to either Claim 1 or 3, characterized in that the shaped member (10), so as to in-crease its inherent rigidity and natural stability, is provided with side wall reinforcements (17) which comprise rod-shaped plastic sections and are connected to the filter paper forming the side walls (16) of the shaped member (10).
5. Coffee making filter according to Claim 4, characterized in that the side wall (16) of the shaped member (10) comprises a double layer (18,19) of filter paper, while the side wall reinforcements (17) are disposed between the two filter paper layers (18,19).
6. Coffee making filter according to any of Claims 1,3 through 5, characterized in that the center chamber accommodating the cup portion (40) of ground coffee has a height which, in comparison with the height formed by the layer (41) of the cup portion (40) of ground coffee, is greater.
7. Coffee making filter according to any of Claims 1, 3 through 6, characterized in that when the shaped member (10) is con-structed so as to be closed at the bottom, a sweetening agent, such as sugar and/or powdered milk is disposed in bottom chamber (230).
8. Coffee making filter according to Claim 7, characterized in that the wall section (16c) of the shaped member (10) deli-m,iting the bottom chamber (230) can be severed from the remaining shaped member part (16a,16b) with the aid of a separating perforation.
9. Coffee making filter according to any of Claims 1, 3 through 8, characterized in that the shaped member 10, on its upper circcumferential rim (14), is provided with a means (70) for the suspension of the coffee making filter (100) into a coffee cup comprising an outwardly pointable collar (71) of a material impervious to water possessing an _ 19 -inherent rigidity and natural stability when being acted upon by water, such as plastic film, laminated paper or cardboard or the like, which is supported on the circumfe-rential cup rim for the coffee brewing process.
10. Coffee making filter according to any of Claims 1, 3 through 9, characterized in that the shaped member (10) of the cof-fee making filter (100), in order to protect the aroma of the coffee, is provided with a wrapper (80) constructed in the form of a tear strip package of thin metal foil or some other suitable material.
11. Coffee making filter according to any of Claims 1, 3 through 10, characterized in that the water filling aparture (15) of the shaped member (10) is sealed by means of a foil (90) of metallic material or of a tasteless plastic which is retained on the side wall (16) of the shaped member (10) by means of a separating perforation (91).
12. Coffee making filter according to any of Claims 1, 3 through 11, characterized in that the upper (30) and the center chamber (130) of the shaped member (10) are combined into one chamber accommodating the cup portion (40) of ground coffee while dispensing with the top partition (20), while the entire side wall (16) of the shaped member (10) or only the side wall section (16c) delimiting the bottom chamber (230) is comprised of filter paper.
13. Coffee making filter according to any of the Claims 1, 3 through 12, characterized in that, for the formation of the chambers (30,130,230) in the interior (12) of the shaped member (10), two hollow cylindrical insert members (25,125) of filter paper which are disposed in each other, possess disparate lengths and are closed at the bottom, are dis-posed, of which the insert member (125) in comparison with the length of the shaped member (10), possesses a shorter length and the insert member (25) disposed within the in-sert member (125), in comparison with the length of the insert body (125), is of an inferior length, in that the bottoms of the two insert members (25, 125) form the parti-tions (20,30), in that, between said bottoms, the chamber (130) which accommodates the cup portion (40) of ground coffee is constructed, and in that the insert member (125) is supported with its upper circumferential, laterally projecting rim (125a) on the circumferential rim (14) of the shaped member (10) and the insert member (25) is sup-ported with its upper circumferential, laterally projec-ting rim (25a) on the circumferential rim (125a) of the insert member (125).
14. Coffee making filter according to Claim 2, characterized in that the external folding member (201) has a square or rectangular cross-section, wherein each of the four fol-ding members (202,203,204,205) is provided centrally with a folding line (202a;203a;204a;205a) proceeding in the longitudinal direction of the folding member and, within the folding member corener areas, with folding lines (202b;203b;204b;205b) proceeding parallelly to three fol-ding lines, in that the folding lines (202a through 205a) 202b through 205b) are formed in the folding member side walls in such away that the side wall sections located adjacent to the folding lines (202a through 205a) can be laid on top of each other by collapsing and, in adaptation to every cup diameter, can be folded out so as to be ready for use, in that the internal folding member (220) has the shape of a pyramid with a base corresponding to the cross-sectional configuration of the external folding member (201) and forming the water filling aperture (222), and having folding lines 222a,223a,224a,225a;222b,223b,224b, 225b) formed in the side walls (222,223,224,225) and in the corner areas, wherein the folding lines extend from the upper circumferential aperture rim (222) to the ter-minal point, and in that, adjacent to the lower rim (201b) of the external folding member (201) in the side walls located on both sides of each corner folding line (202b through 205b), one slot like perforation or recess (215) each is constructed, while the two perforations (215) in the two side walls are located opposite each other and, in the folded-up state of the folding member (201), they are congruent.
15. Coffee making filter according to either Claim 2 or 14, characterized in that the external (201) and the internal folding member (220) possess identical configurations and folding lines.
16. Coffee making filter according to any of Claims 2, 14 and 15, characterized in that the internal folding member (220) with the coffee powder is inserted into the interior of the external folding member (201) and is dimensioned in such a way that the interior folding member (220) rests with its side walls on the internal wall areas of the side walls of the external folding member (201).
17. Coffee making filter according to any of Claims 2, 14 through 16, characterized in that the internal folding member (220) with the ground coffee is rigidly connected to the external folding member (201).
18. Coffee making filter according to Claim 17, characterized in that the internal folding member (220) is, with its upper rim, connected with the upper rim of the external folding member (201).
19. Coffee making filter according to any of Claims 2, 14 through 18, characterized in that the external folding member (201) is coated with a tasteless plastic film or with a plastic.
20. Coffee making filter according to any of Claims 2, 14 through 19, characterized in that the internal folding member (220) is comprised of filter paper having an outer wall coating of an aluminum foil and in that the aluminum foil, within the bottom area, is provided with perfora-tions (221) for the coffee to drain through.
21. Coffee making filter according to any of Claims 2, 14 through 20, characterized in that the upper opening of the internal folding member (220) is sealed by means of a peelable closure of aluminum foil or of a tasteless plastic film.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG8912543.6U | 1989-10-23 | ||
| DE8912543 | 1989-10-23 | ||
| EP90114111A EP0424615A1 (en) | 1989-10-23 | 1990-07-24 | Filter for brewing coffee for the preparation of a cup of percolated coffee |
| EP90114111.9 | 1990-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2071893A1 true CA2071893A1 (en) | 1991-04-24 |
Family
ID=25955438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2071893 Abandoned CA2071893A1 (en) | 1989-10-23 | 1990-10-23 | Coffee infusion filter for preparing cup-sized portions of filter coffee |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0494949A1 (en) |
| JP (1) | JPH05502801A (en) |
| BR (1) | BR9007771A (en) |
| CA (1) | CA2071893A1 (en) |
| FI (1) | FI921781A0 (en) |
| HU (1) | HUT61888A (en) |
| WO (1) | WO1991005501A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6810788B2 (en) | 2002-03-14 | 2004-11-02 | Robert Hale | Beverage cartridge and filter assembly |
| WO2016193116A1 (en) * | 2015-06-05 | 2016-12-08 | Koninklijke Philips N.V. | Method for brewing coffee and having enhanced aroma release |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2989941A1 (en) * | 2014-09-01 | 2016-03-02 | Eksen Makine Sanayi ve Ticaret A.S. | Compact tea brewing appliance |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR812235A (en) * | 1936-10-12 | 1937-05-03 | Cie Francaise Du Mono Service | Cardboard container with internal filters for brewing coffee or other drinks, intended for one-time use |
| FR1013020A (en) * | 1950-02-18 | 1952-07-22 | Retarder-doser for coffee makers | |
| FR2215188B3 (en) * | 1973-01-25 | 1976-01-30 | Bernardin Didier Fr | |
| FR2316902A1 (en) * | 1975-07-10 | 1977-02-04 | Wagner Marc | Paper filter for funnel of coffee maker - is of twin trapezoidal pieces crimped together by their short and oblique edges |
| DE3713609A1 (en) * | 1987-04-23 | 1988-11-10 | Jacobs Suchard Gmbh | FILTERS, IN PARTICULAR COFFEE FILTERS, AND METHOD FOR PRODUCING SUCH A FILTER |
-
1990
- 1990-10-23 BR BR909007771A patent/BR9007771A/en not_active Application Discontinuation
- 1990-10-23 HU HU133992A patent/HUT61888A/en unknown
- 1990-10-23 JP JP51441190A patent/JPH05502801A/en active Pending
- 1990-10-23 WO PCT/EP1990/001793 patent/WO1991005501A2/en not_active Application Discontinuation
- 1990-10-23 CA CA 2071893 patent/CA2071893A1/en not_active Abandoned
- 1990-10-23 EP EP19900915438 patent/EP0494949A1/en not_active Withdrawn
-
1992
- 1992-04-22 FI FI921781A patent/FI921781A0/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6810788B2 (en) | 2002-03-14 | 2004-11-02 | Robert Hale | Beverage cartridge and filter assembly |
| WO2016193116A1 (en) * | 2015-06-05 | 2016-12-08 | Koninklijke Philips N.V. | Method for brewing coffee and having enhanced aroma release |
| CN107666844A (en) * | 2015-06-05 | 2018-02-06 | 皇家飞利浦有限公司 | For infusing coffee and with the method for the fragrance release strengthened |
| US10645944B2 (en) | 2015-06-05 | 2020-05-12 | Koninklijke Philips N.V. | Method for brewing coffee and having enhanced aroma release |
Also Published As
| Publication number | Publication date |
|---|---|
| HU9201339D0 (en) | 1992-07-28 |
| WO1991005501A3 (en) | 1991-08-22 |
| EP0494949A1 (en) | 1992-07-22 |
| FI921781A (en) | 1992-04-22 |
| HUT61888A (en) | 1993-03-29 |
| FI921781A0 (en) | 1992-04-22 |
| WO1991005501A2 (en) | 1991-05-02 |
| BR9007771A (en) | 1992-08-11 |
| JPH05502801A (en) | 1993-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |