Patent ID: 6938802

Claim:
A dispensing pump for a fluid product, including a pump body ( 10 ) in which at least one piston ( 20 , 30 ) slides, wherein a pump chamber ( 40 ) is defined between an input valve ( 50 ) and an output valve ( 60 ), and said pump body ( 10 ) extends towards the inside of a tank ( 2 ) through a plunger tube ( 70 ), said input valve ( 50 ) being sealably connected to said plunger tube ( 70 ), the pump comprising a return spring ( 5 ) which brings said pump back towards a rest position, wherein said spring is positioned out of any contact with the fluid product, and wherein the input valve ( 50 ) includes an input valve seat ( 51 ) movable within said pump body ( 10 ) and an input valve component ( 59 ), which selectively seals and opens said input valve ( 50 ); and wherein the pump body comprises an upper aperture in which an actuating rod is assembled, and a lower aperture in which the plunger tube is assembled.