Foods and beverages: apparatus – Beverage – Infusors
Patent
1996-06-17
1998-05-26
Alexander, Reginald L.
Foods and beverages: apparatus
Beverage
Infusors
99295, 99302P, A47J 3140
Patent
active
057551499
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an automatic machine permitting the preparation of hot beverage infusions such as coffee.
This machine comprises a group which is comprised by a fixed piston and a movable cylindrical body, the group being disposed in juxtaposition to a boiler.
The boiler, on the one hand, the fixed piston and the movable body on the other hand, are separated by a region in which are positioned reception means, for maintaining in position and for the feeding of packages.
BACKGROUND OF THE INVENTION
Such machines are already described in the prior art.
U.S. Pat. No. 3,143,955 provides a machine for the preparation of beverages which comprises essentially mechanisms, package as reception means, for maintaining in position and for delivery, such as a drum on which is rolled up a strip comprising longitudinally a plurality of packages of products to be infused.
SUMMARY OF THE INVENTION
The difference from the present invention resides in the structure of the various means as well as in the use of a strip of packages and not of individual packages. The essential drawback of the strip consists in the presence in the machine, both of used and new packages, which gives rise to problems of cleanliness.
DE-A-2,435,436 relates to an automatic machine for the preparation of infusions of coffee or tea. The movement between the two principal portions of the machine, adapted to be brought together to permit percolation, is ensured by a rotating cam against which is mounted a housing. This housing, according to the invention, provides means for wetting the substance to be infused.
Nevertheless, these wetting means comprise a number of pieces. The construction is thus more difficult and the effectiveness of the rubber disc which closes the perforations of the drum, can be altered by the heat due to percolation.
EP-A-0 093 366 relates to a coffee machine whose technical characteristics are similar to the invention as to the assembly of the movable cylindrical body-fixed piston with boiler and to U.S. Pat. No. 3,143,955 as to the nature of the packages, which are in the form of a strip.
Contrary to these documents, the invention uses, in the extraction group, a product to be infused which is used with individual packages and whose cleaning as well as use of the group are facilitated. Removal of the package and of the product to be infused is automatic.
To this end, the present invention provides an automatic machine for the preparation of hot beverage infusions such as coffee, which comprises a group comprised by a body disposed facing a boiler, adapted to be brought together with each other to comprise an infusion chamber, characterized by the fact that it comprises between the body and the boiler, at the infusion chamber:
reception means for an individual package containing the product to be infused, which are constituted by at least one retractable element, deployed in substantially lower position, adapted to immobilize temporarily said package between the body and the boiler,
means for maintaining the package in position which are constituted by two substantially vertical lateral grooves, in which said package slides and is maintained vertical position when the reception means are present, and
automatic ejection means of said package which are constituted of the retractable element which is retracted relative to the passage for the individual package, to permit the ejection by mere gravity of the individual package, the displacement of the individual package being perpendicular to the axis of the machine.
On the one hand, the infusion chamber is constituted by two half recesses, one carried by the surface of the body, the other carried by the surface of the boiler, these two surfaces facing each other; said infusion chamber is formed when the two half recesses are juxtaposed. On the other hand, the sealing means are carried by the individual package of the product to be infused such that, when the infusion chamber is formed, the individual package is inserted between the two
REFERENCES:
patent: 2952202 (1960-09-01), Renner et al.
patent: 3143955 (1964-08-01), Rockwell
patent: 3269298 (1966-08-01), Grundmann
patent: 4253385 (1981-03-01), Illy
patent: 4429623 (1984-02-01), Illy
Blanc Jean Pierre
Ferrier Christian
Alexander Reginald L.
Compagnie Mediterraneenne des Cafes S.A.
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