Patent ID: 7467732
Filing Date: 2008-12-23
Classification: B05B

Abstract:
1. Liquid product dispenser including a reservoir incorporating a nozzle and a pump mounted in said nozzle, said pump including: a pump body housing a piston which slides in a leaktight manner in the pump body so as to define a liquid dosing chamber in conjunction with the pump body, an inlet valve establishing communication between said dosing chamber and the reservoir, an outlet valve establishing communication between said dosing chamber and dispensing means, a spring moving said piston to a released position in which said dosing chamber is at a maximum volume of said dosing chamber, characterized in that said pump body includes an outer portion forming a plug ensuring a leaktight seal between the pump body and said nozzle, and in that said pump body includes an inwardly extending annular projection, obtained by molding, said piston incorporating an annular stop cooperating with said annular projection to define said released position, under the action of said spring, and characterized in that said inlet and outlet valves respectively include a common obturator which is axially mobile inside the pump body, one end of said obturator forming a pintle which engages with an aperture of an outlet passage formed in the piston so as to constitute said outlet valve, and another end of said common obturator engaging with a suction tube on said pump body so as to constitute said inlet valve.