Capsula para cafe or infusion (Machine-translation by Google Translate, not legally binding)

073 281 U

DESCRIPTION

Capsule for coffee or infusion.

Object of the invention

The present invention refers to a single-dose capsule for coffee or infusions, of the type intended to be used in "espresso" type coffee machines and the like.

The object of the invention is to provide a coffee or infusion capsule that can be used in different types of machines with different capsule formats.

Background of the invention

In the field of practical application of the invention, various types of machines are known for the preparation of coffees and infusions, based on single-dose capsules, which are introduced into a chamber, open at its ends, so that the capsule is perforated at both ends, and is passed through the same water at a high temperature and pressure, which comes into contact with the ground coffee or infusion in question, so that at the exit of the chamber the final product is obtained, which is redirected, through the corresponding conduit, to the cup, glass or element for direct consumption provided for it.

These types of cameras can have different sizes and configurations according to those of the capsules, depending on the different standards and manufacturers, so that there are two major formats.

One of them consists of a capsule with a truncated-conical configuration, which presents an annular expansion in correspondence with its upper base, while the second, perhaps the most widespread, presents an equally truncated-conical configuration, with an annular expansion in correspondence with its upper base, while in correspondence with its lower base said capsule extends inferiorly in a second truncated-conical sector, of greater inclination, and of little height.

Thus, these are capsules of different sizes, which mean that these alone cannot be used except in the specific machines provided for them.

Description of the invention

The capsule for coffee or infusion that the invention proposes fully satisfactorily solves the aforementioned problems, based on a simple but highly effective solution.

To this end, and more specifically, the recommended capsule is made up of a body with a truncated-conical configuration, closed in correspondence with its lower base, and open at the upper one, in which it incorporates a perimeter flange or flange. onto which the capsule closure sheet is fixed by heat sealing or any other conventional method, with the particularity that the smaller base has a flat surface that is affected by a plurality of micro-perforations.

For its part, the frusto-conical surface has, near the end corresponding to the larger base, an annular projection, specially designed to allow the pressure fixing of an equally annular sealing gasket, and with an external diameter in accordance with the diameter of the the perimeter flange of the capsule.

This special configuration makes the capsule applicable both to the first type of coffee makers described, as well as to the second, so that, in the latter case, since the perforation means of the lower base of the capsule do not come into contact with Said lower base, as the capsule is shorter, as it does not have the second truncated conical sector, the microperforations make it possible for the pressurized water injected by the machine to access the interior of the capsule.

For its part, the sealing gasket allows a tight coupling of the capsule in the chamber, avoiding the filtration of water through the edges corresponding to the larger base towards the outlet duct, a coupling that is not carried out with a conventional capsule. carried out in a watertight manner in that the perforation means of the lower base act as injector elements of the pressurized water, ensuring that all of said flow of water passes through the capsule, while in the present case, since the capsule has a lower height, the water is injected under pressure onto the chamber, making it necessary to seal it, which is achieved by means of said sealing gasket.

In this way, a highly versatile capsule for coffee or infusion is achieved, applicable to different types of machines.

Description of the drawings

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of a practical embodiment thereof, a set of drawings is attached as an integral part of said description. For illustrative and non-limiting purposes, the following has been represented:

Figure 1.- Shows an exploded perspective view of a capsule for coffee or infusion made according to the object of the present invention.

Figure 2.- Shows a diametrical sectional view of the capsule of the previous figure duly assembled.

Preferred embodiment of the invention

In view of the figures outlined, it can be seen how the recommended capsule is constituted from a frusto-conical body (1) with its smaller base (2) closed, and open in correspondence with its larger base, on whose edge it incorporates a flap or perimeter flange (3) that acts as a surface for fixing the cap (4) for sealing the capsule, the coffee or infusion in question being housed inside (5).

Well, the lower base (2) of the capsule has the particularity that it is affected by a plurality of micro-perforations (6), to allow the passage of pressurized water from the coffee maker, once the capsule in the corresponding chamber, so that, said frusto-conical body has an annular projection (7) that acts as a retaining element for an annular sealing gasket (8) that is located between said projection and the perimeter flange (3), presenting a External diameter identical to that of said flange, thus constituting a means of sealing the chamber outlet with respect to the coffee capsule, regardless of the type of machine in question, as this type of chamber has an annular groove

ES 1 073 281 U formally and dimensionally suitable to receive the aforementioned perimeter flange (3) with a certain clearance, a clearance that is eliminated with the aforementioned sealing gasket, preventing the passage of water through the exterior of the capsule into the conduit outlet of the coffee maker.