Patent ID: 7854355
Filing Date: 2010-12-21
Classification: B05B

Abstract:
1. Pump intended to be mounted on a bottle so as to enable the dispensing of a liquid contained in said bottle, said pump including: a shrunk-fit section intended to be firmly fastened to the bottle, said shrunk-fit section including an orifice communicating with the liquid; a pushbutton including an orifice for ejecting the liquid, said pushbutton being mounted in translation on said shrunk-fit section, restrained by an elastic return means; a dosing sleeve mounted in said pushbutton, said sleeve integrating a needle for plugging the ejection orifice and a device for bi-directional movement of said needle between a plugging position and an ejection position; a dosing piston including a channel for dispensing the liquid, said channel being equipped with a closing valve for the orifice, said piston being mounted in translation, in a leak-tight manner, in said shrunk-fit section, between an open position and a closed position of the orifice, by means of the valve, said sleeve and said piston being mounted in translation, in a leak-tight manner, in relation to each other, so as to define between them a dosing chamber for the liquid; an actuating member integral with the device for moving the needle and mounted slidably inside the dosing piston, by pressing on the pushbutton, said sliding assembly being set up to actuate the moving device and to position the valve in closed position, so as to enable ejection of the liquid from the dosing chamber; and wherein the needle moves with respect to both said dosing sleeve and said pushbutton.