Fluid dispenser pump

Details Fluid dispenser pump Fluid dispenser pump

2005-03-15

2005-03-15

Jacyna, J. Casimer (Department: 3751)

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

C222S321200, C222S341000

Reexamination Certificate

active

06866168

ABSTRACT:
A manually-actuated fluid dispenser pump including a pump body (10) containing a pump chamber (20), said pump chamber (20) being defined between an inlet valve (30) and an outlet valve (40), a piston (50) being mounted to slide in said pump body (10) between a rest position and a dispensing position for dispensing the fluid contained in the pump chamber, said piston (50) being connected to, and in particular integral with, an actuating rod (60) provided with an expulsion channel (65), said inlet valve (30) including an inlet valve element (31) mounted to move in the pump body (10) and co-operating with said pump body (10) or with an element secured to or integral with said pump body to define the open and the closed positions for said inlet valve (30), said outlet valve (40) including an outlet valve element (41) mounted to move in the pump body (10) and co-operating with said actuating rod (60) or with an element secured to or integral with said actuating rod to define the open and the closed positions for said outlet valve (40), said fluid dispenser pump being characterized in that, during actuation, said outlet valve (40) is urged into its closed position by the pressure from the fluid contained in the pump body (20), said outlet valve element (41) being moved into the open position of the outlet valve (40) by said inlet valve element (31) when the piston (50) reaches its dispensing position.

REFERENCES:
patent: 5176296 (1993-01-01), Lina et al.
patent: 5303854 (1994-04-01), Cater
patent: 5409146 (1995-04-01), Hazard et al.
patent: 5664706 (1997-09-01), Cater

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