Patent ID: 6726064
Filing Date: 2004-04-27
Classification: B05B

Abstract:
A pump to dispense a substance contained in a receptacle, the pump comprising:a pump body including at least one air intake vent; a pushbutton movable relative to the pump body between a low position and a high position; a suction valve including a shutter-forming member; a piston co-operating with the pump body to define a pump chamber of variable volume; and a dispenser duct having a height and through which the pump chamber can communicate with a dispenser orifice; wherein the pushbutton further comprises a sealing skirt surrounding the dispenser duct on at least a fraction of said height, said sealing skirt being suitable for bearing in leaktight manner against the pump body when the pushbutton is in its low position so as to isolate the vent from the outside, and wherein the piston is movable relative to the dispenser duct.