| US 7,467,732 B2 | ||
| Pump liquid product dispenser | ||
| Jean-Louis Bougamont, Eu (France) | ||
| Assigned to Rexam Dispensing Systems S.A.S, (France) | ||
| Appl. No. 10/503,489 PCT Filed Feb. 05, 2003, PCT No. PCT/FR03/00344 § 371(c)(1), (2), (4) Date Aug. 10, 2005, PCT Pub. No. WO03/066235, PCT Pub. Date Aug. 14, 2003. |
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| Prior Publication US 2006/0060608 A1, Mar. 23, 2006 | ||
| Int. Cl. B65D 88/54 (2006.01) | ||
| U.S. Cl. 222—321.9 [222/321.2; 222/321.7] | 19 Claims |
| 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.
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