Multiple liquid active substance dispenser for W.C. bowl

1. A multiple liquid active substance dispenser for a W.C. bowl, to be housed within the W.C. bowl, comprising

at least two bottles ( 11 ) having separate internal chambers, each for containing an active substance (R) in the liquid state and having an exit mouth ( 12 ) for the active substance (R), and

a support means ( 20 ) for supporting said bottles ( 11 ) in an inverted position, with their mouth ( 12 ) facing downwards, in a position subjected to the action of the flushing water flow, said bottles ( 11 ) being separate from the support means ( 20 ),

characterised in that

the support means ( 20 comprises:

for containing the active substance at least two reservoirs ( 21 ) located in a position subjected to the action of the flushing water flow and arranged to receive the mouth ( 12 ) of the bottle,

a like number of closure members ( 30 ), each positioned in said containing reservoir ( 21 ) to each close the mouth ( 12 ) of the respective bottle ( 11 );

for the active substance at least one passage means ( 35 , 36 ) associated with each closure member ( 30 ) to enable the active substance to pass from the internal chamber of the bottle ( 11 ) to the containing reservoir ( 21 ),

each containing reservoir ( 21 ) having a side wall ( 21 b ) defining a volume for containing a quantity of active substance which closes said passage means ( 35 , 36 ) for the active substance, the side walls ( 21 b ) of the reservoirs being joined together by a common corridor ( 29 ) which connects them together.

2. A dispenser as claimed in claim 1 , characterised in that said common corridor ( 29 ) is bounded by two side walls ( 29 b ) having the same height as the walls ( 21 b ), and has a width much smaller than the plan diameter of the reservoirs ( 21 ).

3. A dispenser as claimed in claim 1 , characterised in that said containing reservoirs ( 21 ) have an upwardly facing concavity located in the zone subjected to the water flow, to contain a determined level of liquid, and to contain the exit mouth ( 12 ) of the respective bottle with its lower passage cross-section (P 1 ) positioned below the maximum level (L 1 ) of the liquid present in the reservoir ( 21 ).

4. A dispenser as claimed in claim 1 , characterised by comprising, for each bottle, at least one ventilation passage means ( 31 and 32 ) which, when in use, connects the internal chamber of the bottle ( 11 ) to the atmospheric air.

5. A dispenser as claimed in claim 1 , characterised in that the geometrical characteristics of the ventilation passage means ( 31 , 32 ) are in relation to the physical-chemical characteristics of the active substance so as to achieve a gauged passage of air into the interior of the bottle ( 11 ) such that the active substance does not normally leave the bottle ( 11 ), at least not to a relevant extent, whereas it leaves the bottle ( 11 ) to a gauged extent when the flushing flow strikes the containing reservoir ( 21 ).

6. A dispenser as claimed in claim 3 , characterised in that said closure member ( 30 ) is in the form of an upwardly facing tube piece closed lowerly, and having an upper end which projects upwards beyond the exit mouth ( 12 ) of the bottle associated with the support means ( 20 ), the exit mouth ( 12 ) being in such geometrical relationship with said member ( 30 ) as to sealedly embraces its lateral surface.

7. A dispenser as claimed in claim 1 , characterised in that said containing reservoir ( 21 ) comprises at least one drainage aperture ( 41 ) having a passage opening sized such as to enable water to pass but to prevent passage of the active substance.