Dispensing – With filter – Associated with vent passage
Reexamination Certificate
2006-05-09
2006-05-09
Kaufman, Joseph A. (Department: 3754)
Dispensing
With filter
Associated with vent passage
C222S321200, C222S321800
Reexamination Certificate
active
07040511
ABSTRACT:
A fluid dispenser pump including a pump body (10), a piston (20) being slidably received in leaktight manner in the pump body (10) to slide between a rest position and a dispensing position, the top edge (11) of the pump body (10) being fixed in a fixing ring (5) serving to assemble the pump to a reservoir (1), an annular sealing gasket (100, 200) being disposed between the pump body (10) and the fixing ring (5), the pump further being provided with a intake air passageway (80) between the reservoir (1) and the atmosphere, the pump being characterized in that a filtration and/or treatment element (100) for filtering and/or treating the intake air is provided in the intake air passageway (80), the filtration element (100) being disposed between the top edge (11) of the pump body and the fixing ring (5).
REFERENCES:
patent: 4694976 (1987-09-01), Schuetz
patent: 5927559 (1999-07-01), Bommer et al.
patent: 5988449 (1999-11-01), Fuchs et al.
patent: 6053368 (2000-04-01), Geimer
Kaufman Joseph A.
Valois S.A.
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