Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1998-07-01
2000-06-06
Douglas, Steven O.
Dispensing
Collapsible wall-type container
With wall-collapsing means
222105, 222260, 2223219, 222385, B65D 3528, B65D 3556, G01F 1100
Patent
active
060707631
ABSTRACT:
A dispenser (1) for a liquid product (P), provided with a dispensing head (7) has an axially movable push button (26) defining a pumping chamber (22) having an intake opening (14) for the product, obturated by an admission valve (16) carried by a piston (12). The piston has at least one sealing lip (12a, 12b) in contact such that the internal sides are displaced between a high position and a low position, the passing from the low position to the high position causing the product to be drawn in and the reverse passing causing the drawn-in product to emerge through a dispensing valve (40). A spring (32) is provided for restoring the push button (26) into its high position. The admission valve (16) and the piston (12) are mounted on a collar (4) having a seat (18) for the admission valve (16). The sealing lip (12a, 12b) is made of a rigid or semi-rigid material, and the admission valve (16) is formed by a membrane made of a flexible material.
REFERENCES:
patent: 3877616 (1975-04-01), Stevens
patent: 4479593 (1984-10-01), Bundschuh
patent: 5409146 (1995-04-01), Hazard et al.
patent: 5492252 (1996-02-01), Gueret
patent: 5642860 (1997-07-01), Bush et al.
"L'Oreal"
deVore Peter
Douglas Steven O.
LandOfFree
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