Patent ID: 6920649

Claim:
Flushing mechanism for a toilet tank ( 10 ) arranged to permit the evacuation from the previously filled tank ( 10 ) of two different volumes of water by action on at least one control button ( 12 ), said mechanism comprising an overflow tube ( 1 ) provided, at its lower end, with a sealing valve ( 3 , 4 ) coacting with an evacuation opening ( 5 ′) provided in the bottom of the tank ( 10 ), said overflow tube ( 1 ) being arranged to occupy at least three axial positions, namely a lower position for closing the evacuation opening ( 5 ′), an intermediate so-called small flush position permitting evacuation of a first volume of water and an upper so-called large flush position permitting the evacuation of a second volume of water greater than the first volume of water, control means ( 12 , 16 , 17 , 21 , 22 ) ensuring the axial movement of the overflow tube ( 1 ) from its lowest position to the intermediate position or the upper position, the mechanism moreover comprising a first so-called small flush float ( 30 ) mounted on a height adjustment screw ( 31 ) and a second so-called large flush float ( 40 ) pivotally mounted about an axle ( 41 ) fixed relative to the housing ( 2 ), characterized in that a housing ( 2 ) surrounds the assembly of the mechanism, said housing ( 2 ) being of a single piece in two parts articulated about a hinge ( 60 ) parallel to the axis of the overflow tube ( 1 ).