Food or edible material: processes – compositions – and products – Foraminous material infusion type – or foraminous container...
Patent
1996-02-21
1998-07-07
Weier, Anthony J.
Food or edible material: processes, compositions, and products
Foraminous material infusion type, or foraminous container...
429 81, 429 82, 429594, 99289, 99295, 99297, 99323, 206 05, B65B 100, A47J 3100
Patent
active
057765278
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a package of ground coffee, in the form of a tablet, a small quantity or prefilled bag. The package can be used in espresso coffee machines adapted to receive such a package of specific shape.
Thus the tablet, the small quantity or the prefilled bag is formed of filter paper containing the ground coffee and having a sealing edge.
BACKGROUND OF THE INVENTION
The state of the art includes many references.
Among the most interesting, document EP-A-0 361 569 relates to a coffee filter in which a predetermined quantity of ground coffee is retained between upper and lower filter papers fixed to a support.
This latter is either a filter adapted to receive a certain quantity of paper, or a cartridge for a filter, and comprises a vertical edge. The assembly is characterized by the fact that the upper filter paper forms with the filter or the cartridge a small basin, which is to say that the peripheral edge of the upper filter paper is bent obliquely upwardly.
The document EP-A-0 422 898 describes an improved and optimized shape of a filter bag for infusion coffee, adapted to be used in coffeemakers and to produce a homogeneous infusion of coffee in different coffeemakers of the American or European type. The bag comprises a first piece of filter paper, whose surface is stretched by at least 3% from a rounded pocket, and sealed to a second circular piece of filter paper to form a sealing edge of about 1.27 cm thereabout. A measured quantity of ground coffee is enclosed in the rounded pocket and provided with a space at its upper portion of at least 50% by volume of the pocket. The first and second circular pieces of filter paper each have preferably a diameter of about 12.7 cm and are filled with a measured quantity of ground coffee to infuse five cups of water. In this improved shape, the presence of an edge of 1.27 cm, in combination with an increased surface due to the stretching of the filter, produces a coffee with increased extraction of the soluble solids and a decrease of the deviation from standard extraction.
The document WO-92 07775 concerns a sealed cartridge containing a measured quantity of substance adapted for the preparation of a beverage, by dissolution or extraction with a liquid, which is disposed in a collecting member for a liquid constituted by a truncated cup. The assembly thus formed is placed in a recess of a "spoon" of an espresso coffee machine. The top of the cartridge is perforated by a perforating and injecting member which injects a liquid under pressure into the cartridge. The lower membrane of the cartridge deforms under the force of the pressure thus created and is pressed against the perforating points at the bottom of the cup. The beverage flows into the recess and can thus be collected in cups. The invention permits optimizing the duration of contact of the substance contained in the cartridge with the liquid provided for its dissolution or its extraction.
FR-A-2,575,181: Disposable infusion apparatus comprising upper and lower filters forming a chamber between them, a measured quantity of ground coffee disposed in the chamber, an annular disc to be supported by the edge of a coffee cup, a wall extending from the disc and suspending the filters and the coffee at a certain distance under the disc in an infusion position and can be folded in a position in which the filters and the mass of coffee are in the annular space of the disc for packaging, the wall and the upper disc defining a water reservoir in the infusion position.
There is another problem there since the above is only applicable to coffee infusion and not to espresso coffee (percolating extraction). The coffee is not very compacted. The disc functions as engagement member at the edge of the cup, it comprises an engagement border for that purpose. The disc is articulated and may be folded towards the interior of the annular space. It may not be used in a machine.
CH-495 138: This patent describes a small quantity of coffee without any armature or rigid piece. T
REFERENCES:
patent: 2004486 (1935-06-01), Cooper
patent: 2952202 (1960-09-01), Renner
patent: 3446624 (1969-05-01), Luedtke
patent: 3692536 (1972-09-01), Fant
patent: 4801464 (1989-01-01), Hubbard, Jr.
Compagnie Mediterraneene des Cafes S.A.
Weier Anthony J.
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