Foods and beverages: apparatus – Beverage – Infusors
Patent
1996-04-05
1999-01-19
Alexander, Reginald L.
Foods and beverages: apparatus
Beverage
Infusors
99290, 99306, A47J 3106, A47J 3124
Patent
active
058603549
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention concerns an infusion machine, such as a filter-type coffee maker for example, including a cold-water container which incorporates a water purification device and which comprises a water outlet connected to a water heater.
BACKGROUND OF THE INVENTION
In order to ensure that the infusion has a good aroma, the inclusion in the container of a filter suitable for purifying the water intended to supply the water heater is known. To this effect, a water purification filter of a known type consists of a removable cartridge made of relatively flexible material, filled with a water purification substance containing granules of activated charcoal. This cartridge, which forms a water purification filter, is placed, so as to fit closely, in a basin with a suitable shape, formed in the bottom of the container, and includes water inlet and outlet orifices through which the purified water, after passing through the filter cartridge, flows into the water heater.
However, because such a filter cartridge is applied against the walls of the shaped basin in the bottom of the container, the said filter cartridge is liable to deform as a result of an increase in its volume due to a swelling of the mass of the purification substance caused by the water which it retains, resulting in a certain amount of difficulty in extracting the filter cartridge from the container when it is being changed.
The aim of the invention is, notably, to mitigate these drawbacks.
SUMMARY OF THE INVENTION
According to the invention, the water purification device includes a removable cartridge comprising a bottom part forming a cup which is designed to be mounted sealingly in a suitable basin formed in the bottom of the container, and in which is housed so as to be removable a filter sachet containing a water purification substance, and a top part forming a cap which is located in line with the cup and which is able to close the latter, the said cap of the cartridge comprising at least one opening through which the water from the container enters and the said cup of the cartridge comprising at least one opening through which the water flows into the water heater after passing through the filter sachet.
By means of this design, it can be understood that the removable cartridge now constitutes a simple component for supporting and protecting the filter sachet, the latter being easy to extract from the cartridge. In addition, the cartridge and filter sachet form a unit which is hygienic and convenient for the user to employ.
According to another important characteristic of the invention, the top face of the filter sachet has a peripheral rim which is applied sealingly against the edge of the cartridge cup. This special positioning of the filter sachet ensures both a perfect seal between the cap and the cartridge cup and excellent holding of the filter sachet in position in the cartridge cup, thus ensuring continuously that all the water from the container passes through the filter sachet without any risk of detaching the latter.
BRIEF DESCRIPTION OF THE INVENTION
Other characteristics and advantages of the invention will, moreover, become clear from the following description, given by way of example, with reference to the accompanying drawings in which:
FIG. 1 is a partial view in vertical section of an infusion machine according to the invention, showing a non-return valve in the closed position;
FIG. 2 is a view in cross section along the line II--II in FIG. 1;
FIG. 3 is an identical view to FIG. 1, the non-return valve being in the open position;
FIG. 4 is a view in vertical section, to a larger scale, of the water purification device illustrated in FIGS. 1 and 3;
FIG. 5 is an exploded view, in vertical section, of the cup and cap constituting the cartridge of the water purification device illustrated in FIG. 4;
FIG. 6 is a view in cross section of a detail of the cap along the line VI--VI in FIG. 5;
FIG. 7 is a view in vertical section of the cup and cap in FIG. 5 after being assembled;
FIG. 8 is a
REFERENCES:
patent: 4283283 (1981-08-01), Zimmerman
patent: 5038675 (1991-08-01), HArtel
patent: 5238559 (1993-08-01), Nieweg
patent: 5370041 (1994-12-01), Lowe
patent: 5393548 (1995-02-01), Heiligman
Jouatel Christian Bernard
Landais, deceased Francis Pierre Jacques
Alexander Reginald L.
Moulinex (S.A.)
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