Liquid active substance dispenser for W.C. bowl

Abstract

The dispenser comprises a closed bottle ( 11 ) containing active substance (R) in the liquid state, and a support means ( 50 ) for supporting said bottle ( 11 ). According to the invention there are provided a collection tray ( 15 ) supported by the support means and collecting water from the flushing flow in such a manner as to increase the water level in its interior, and a half-siphon ( 20 ) with an inlet ( 23 ) which draws water from the collection tray ( 15 ), and an outlet ( 24 ) positioned at a lower level than the inlet ( 23 ), to discharge water to the outside of the collection tray ( 15 ). Said half-siphon ( 20 ), on its action being triggered by the water level in the tray ( 15 ), draws water from the tray ( 15 ). The bottom of the interior of the bottle ( 11 ) communicates with the outside via a sized passage ( 26, 28, 32 ) able, when under static conditions, to prevent the active substance leaving through it; in addition, the suction side of the half-siphon ( 20 ) is connected to the interior of the bottle ( 11 ) via said sized passage ( 26, 28, 32 ) to draw a gauged quantity of active substance.

1 . A liquid active substance dispenser for a W.C. bowl, comprising a closed bottle ( 11 ) the interior of which contains active substance (R) in the liquid state, and a support means ( 50 ) for supporting said bottle ( 11 ) 
 characterised by comprising:    supported by the support means, a collection tray ( 15 ) for collecting water from the flushing flow in such a manner as to increase the water level in its interior,    a half-siphon ( 20 ) with an inlet ( 23 ) which draws water from the collection tray ( 15 ), and an outlet ( 24 ) positioned at a lower level than the inlet ( 23 ), to discharge water to the outside of the collection tray ( 15 ),    said half-siphon ( 20 ), on its action being triggered by the water level in the tray ( 15 ), drawing water from the tray ( 15 ),    the bottom of the interior of the bottle ( 11 ) communicating with the outside via a sized passage ( 26 ,  28 ,  32 ) able, when under static conditions, to prevent the active substance leaving through it, the suction side of the half-siphon ( 20 ) being connected to the interior of the bottle ( 11 ) via said sized passage ( 26 ,  28 ,  32 ) to draw a gauged quantity of active substance.    
   
   
       2 . A dispenser as claimed in  claim 1 , characterised by comprising a passage ( 26 ,  29 ) which connects the bottom of the interior of the bottle ( 11 ) to the upper region of the half-siphon ( 20 ) which is under vacuum when the half-siphon ( 20 ) is in operation.  
   
   
       3 . A dispenser as claimed in  claim 1 , characterised by comprising a downwardly facing cap ( 30 ) enclosing the upper end portion of the half-siphon ( 20 ), the edge ( 31 ) of the lower mouth extending downwards within the collection chamber ( 15 ) to below the level of the inlet of the half-siphon, the top of the interior of said cap ( 30 ) being connected to the bottom of the interior of the bottle ( 11 ).