Liquid active substance dispenser for w.c. bowl

Abstract

The dispenser comprises, for containing active substance (R) in the liquid state, a bottle ( 11 ) having an exit mouth ( 12 ) and supported by a support means ( 20 ) in an inverted position, with its mouth ( 12 ) facing downwards in a position subjected to the action of the flushing water flow. The support means ( 20 ) comprises, for containing the active substance, a reservoir ( 21 ) located in a position subjected to the action of the flushing water flow and arranged to receive the mouth ( 12 ) of the bottle, and a member ( 30 ) positioned in said containing reservoir ( 21 ) to close the mouth ( 12 ) of the bottle ( 11 ), an active substance descent passageway ( 35 ) enabling the active substance to descend in a gauged manner into the containing reservoir ( 21 ), and a ventilation passage which, when in use, connects the internal chamber of the bottle ( 11 ) to the ambient air, the containing reservoir ( 21 ) defines a volume for containing a quantity of active substance which closes said active substance descent passageway ( 35 ). According to the invention there is provided, discharging to the outside of the reservoir, a siphonic trap-means ( 40 ) having an inlet ( 42 ′) which draws liquid from the containing reservoir at a level (L 2 ) below the level of the lower outlet section (P 1 ) of the bottle mouth ( 12 ) and having a triggering level above the level of said lower section (P 1 ), said containing reservoir ( 21 ) being enclosed within a collection region ( 50 ) arranged to temporarily retain the flushing water until a level is reached such as to trigger the action of the trap-means and then release the water into the W.C. bowl.

1 . A liquid active substance dispenser for a W.C. bowl, to be housed within the W.C. bowl, comprising: 
 for containing active substance (R) in the liquid state, a bottle ( 11 ) having an exit mouth ( 12 ) for the active substance (R) and    a support means ( 20 ), separated from the bottle ( 11 ), to support said bottle ( 11 ) in an inverted position, with its mouth ( 12 ) facing downwards in a position subjected to the action of the flushing water flow,    the support means ( 20 ) comprising:    for containing the active substance, a reservoir ( 21 ) located in a position subjected to the action of the flushing water flow and arranged to receive the mouth ( 12 ) of the bottle,    at least one active substance descent passageway ( 35 ) enabling the active substance to descend in a gauged manner into the containing reservoir ( 21 ),    at least one ventilation passage ( 31 ) which, when in use, connects the internal chamber of the bottle ( 11 ) to the ambient air,    said containing reservoir ( 21 ) defining a volume for containing a quantity of active substance which closes said active substance descent passageway ( 35 )    characterised by comprising, discharging to the outside of the reservoir, a siphonic trap-means ( 40 ) having an inlet ( 42 ′) which draws liquid from the containing reservoir at a level (L 2 ) below the level of the lower outlet section (P 1 ) of the bottle mouth ( 12 ) and having a triggering level above the level of said lower section (P 1 ),    said containing reservoir ( 21 ) being enclosed within a collection region ( 50 ) arranged to temporarily retain the flushing water until a level is reached such as to trigger the action of the trap-means and then release the water into the W.C. bowl.    
   
   
       2 . A dispenser as claimed in  claim 1 , characterised by comprising a cap ( 42 ) with its concavity facing downwards to cover the upper mouth ( 41 ′) of a conduit ( 41 ) which passes through the base wall ( 25 ) of the containing reservoir ( 21 ), said upper mouth ( 41 ′) defining the triggering level of the trap-means ( 40 ).