Patent ID: 8028862
Filing Date: 2011-10-04
Classification: B05B

Abstract:
1. A pump adapted to be mounted on a bottle so as to allow the dispensing of a liquid contained in said bottle, said pump comprising: a hoop adapted to be fixed to the bottle, said hoop comprising an orifice adapted to be in communication with the liquid; a push button comprising an orifice adapted to eject the liquid, said push button being mounted on said hoop in translation restrained by an elastic return element; a dosing sleeve mounted in said push button and a dosing piston mounted in said hoop, said dosing piston comprising a channel adapted to dispense the liquid, said channel being equipped with a valve for reversible closure of the orifice, said sleeve and said piston defining between them a chamber adapted to dose the liquid and being mounted in sealed translation with respect to each other on a liquid dispensing/suction travel; said pump further comprising a needle for closing the ejection orifice which is separate from the dosing sleeve, said needle being mounted on said sleeve by means of a device for the reversible movement of said needle between a closure position and an ejection position, said device being actuated by interference between the sleeve and the piston when the push button is moved on the hoop; and wherein the dosing sleeve comprises a tube integrated in a body of the sleeve by means of the movement device, said tube being mounted slideably in the dosing piston with sufficient interference to actuate said device before or at the start of the translation over the dispensing/suction travel.