Foods and beverages: apparatus – Beverage – Infusors
Patent
1995-03-16
1997-02-18
Jenkins, Robert W.
Foods and beverages: apparatus
Beverage
Infusors
99300, 426433, A47J 3124, A47J 3114
Patent
active
056032544
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to provision of a substance for preparation of a beverage contained in a sealed pliant bag, to preparation of a beverage by extracting the substance while contained in the bag and to apparatus for carrying out the method including an holder member for holding the bag and an extraction machine for providing means for effecting extraction.
BACKGROUND OF THE INVENTION
The use of premetered and prepackaged portions of ground coffee for the preparation of coffee of the filter type (percolation under atmospheric pressure and under just the effect of the column of hot water placed above the bed of coffee) or of the expresso type (extraction pressure above 0.5 bar and up to 20 bar) has the advantage of making the operations of preparing the coffee easier, while guaranteeing a relatively constant quality of the product.
Currently, these portions are in two main forms. According to a first version, the portion described in U.K. Patent Application Publication No. GB 2,121,762 consists of a sachet package with a nozzle intended to be perforated in order to enable liquid to be injected into the package. The liquid, after extraction through the bed of coffee, drains away through the tear, automatically produced under the effect of the pressure or by mechanically cutting, in the bottom of the package.
The GB '762 sachet package, requiring the presence of a nozzle, is complicated and expensive to produce and to use. The extraction device is also very complicated and requires the device for introducing the aqueous fluid to interact in a sealed manner with the package.
According to a second version, described in PCT Patent Application Publication No. WO 92/0775, the portion consists of a sealed cartridge which is opened by an extraction device under the effect of the introduction of the extraction fluid after being deformed against sharp points. This cartridge consisting of a sealed envelope forming a side wall and two walls of which one constitutes the bottom of the cartridge and the other seals off the opposite end of the cartridge, has the drawback of employing various packaging materials, some of them being sufficiently thick to impart semi-rigidity to them, and can be used only in one sense with an extraction device perfectly matched to the capsule and to its arrangement. This device comprises, towards the upper face of the cartridge, a device for introducing water and, towards the lower face, a device for perforating the bottom of the cartridge, the cartridge having to be clamped, in a perfectly sealed manner, around its entire edge between the two removable parts of the extraction device.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a method and apparatus devices which permit extraction from a sealed pliant bag, ready for use directly and without a nozzle for introducing the fluid, and not requiring perfect sealing, either between the device for introducing the fluid and the bag or between the two interacting parts of the extraction device.
The present invention provides a bag-holder which comprises a handle, an open housing for the bag and an outflow area for flow of the extracted beverage from the holder, the housing comprising means for securing a part of the bag in the holder, and the outflow area comprises a grid of raised and indented elements to provide for tearing of a bag containing a substance to be extracted for preparation of a beverage and comprises flow holes for passage of extract from the housing.
The present invention also provides an extraction machine which comprises at least one needle for injecting extraction fluid into a bag containing a substance to be extracted for preparation of a beverage. In the context of association with the bag-holder described above, the at least one needle is provided at a position for passing through the bag-holder housing for penetrating into a bag held by the bag-holder in the region of the outflow grid, and the machine also comprises a complementary part which enables, upon placing the bag-holder in
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Fond Olivier
Masek Petr
Jenkins Robert W.
Nestec S.A.
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