Vessel for filtering liquids, particularly drinking water having

Details Vessel for filtering liquids, particularly drinking water having Vessel for filtering liquids, particularly drinking water having

1997-06-27

1999-05-04

Drodge, Joseph W.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

210 94, 210473, 222 23, 116264, 116284, B01D 35143, B67D 508

Patent

active

059001380

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The subject of the invention is a vessel for filtering liquids, particularly drinking water, wherein the vessel includes a container and a receptacle for the liquid to be filtered with a filter therebetween and a cover.
The vessel is of the type which has a replaceable filter cartridge and in which, to ensure efficient filtering, the filter cartridge has to be removed and replaced after a certain number of cycles and/or after a predetermined period of time.


BACKGROUND ART

According to the prior art, it is up to the user to remember to replace the cartridge once its filtering capacity must be considered exhausted. However, it may not be at all easy to remember the number of filtering cycles carried out after the last replacement of the cartridge.


SUMMARY OF THE INVENTION

The object of the invention is to provide a filtering vessel, the structure and operation of which are such as to facilitate the user's task of monitoring the efficiency of the filter cartridge in order to replace it once the useful filtering cycles provided for have been carried out.
The object of the invention is achieved by providing a vessel for filtering liquids that includes a container, a receptacle for the liquid to be filtered, and a filtering means between the receptacle and the container. To access the container, a lid is removably fitted on the container. A counting device to be associated with the lid and the container. The counting device detects and counts the occasions that access is gained to the container. Furthermore, the counting device is automatically activated when the lid is removed from the container. Any removal of the lid is therefore detected and counted by the counting device.


SHORT DESCRIPTION OF DRAWINGS

The characteristics and advantages of the invention will become clearer from the detailed description of some preferred but not exclusive embodiments thereof illustrated in the appended drawings, in which:
FIG. 1 is a front elevational view of a vessel according to the invention shown in partial section,
FIG. 2 is a partially-sectioned plan view of a detail of the vessel from above,
FIG. 3 is a partially-sectioned perspective view of a further detail of the same vessel from above,
FIG. 4 is an exploded perspective view of the detail of FIG. 3 from below,
FIG. 5 is a longitudinal section of a first variant of the vessel of the previous drawings, shown only partially,
FIG. 6 is a section taken on the line VI--VI of FIG. 5,
FIG. 7 is a partially-sectioned plan view of the vessel of FIGS. 5 and 6 from above,
FIG. 8 is a longitudinal section of a second variant of the vessel of the previous drawings, shown only partially,
FIG. 9 is a section taken on the line IX--IX of FIG. 8,
FIG. 10 is a partially-sectioned plan view of the vessel of FIGS. 8 and 9 from above,
FIG. 11 is a longitudinal section of a third variant of the vessel of the previous drawings, shown only partially,
FIG. 12 is a section taken on the line XII--XII of FIG. 11,
FIG. 13 is a partially-sectioned plan view of the vessel of FIGS. 11 and 12 from above,
FIG. 14 is a longitudinal section of a fourth variant of the vessel of the previous drawings, shown only partially,
FIG. 15 is a section taken on the line XV--XV of FIG. 14,
FIG. 16 is a partially-sectioned plan view of the vessel of FIGS. 14 and 15 from above,
FIGS. 17, 18 and 19 are partially-sectioned side elevational views of three further variants of the vessel of the invention.


EMBODIMENTS OF THE INVENTION

In FIGS. 1 to 3, a vessel according to the present invention is generally indicated 1; it comprises a jug 2 with a handle 3 and a spout 4 for pouring out the filtered water, a funnel-shaped container 5 housed in the jug 2 and supported with form coupling in a mouth portion 7 thereof and a lid 8 positioned removably for closing the container 5.
The container 5 defines, in known manner, a receptacle 9, in the base of which there is a housing 10 for a filter cartridge 11 replaceable, for example, after a predetermined number of filtering cycles. By way of indication,

REFERENCES:
patent: 4034757 (1977-07-01), Glover
patent: 5139666 (1992-08-01), Charbonneau et al.
patent: 5190643 (1993-03-01), Duncan et al.
patent: 5209375 (1993-05-01), Fuchs
patent: 5328597 (1994-07-01), Boldt, Jr. et al.
patent: 5536394 (1996-07-01), Lund et al.

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