Patent ID: 6206245
Filing Date: 2001-03-27
Classification: B05B

Abstract:
A pump for mounting on a receptacle to dispense a substance contained therein, the pump comprising:a pushbutton that is movable relative to a pump body between a low position and a high position, and co-operating therewith to define a pump chamber of variable volume, the pump chamber communicating with a dispenser orifice via a delivery valve including a ball that forms a valve member, the ball being retained in a housing of the pushbutton, wherein the pushbutton includes retaining means for the ball that is integrally formed with the housing by molded plastic material, the housing is in a duct having a bottom end and the retaining means are constituted by the bottom end of the duct, the bottom end shaped such that the ball is put into place in the housing by elastic deformation, the pump includes a suction valve comprising a second ball forming a second valve member, and the bottom end keeps the ball of the suction valve in its closed position when the pushbutton is in its low position.