Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1995-08-04
1997-05-20
Kaufman, Joseph
Dispensing
Collapsible wall-type container
With wall-collapsing means
222105, 2223219, 2223865, B65D 3554
Patent
active
056305311
ABSTRACT:
The volume (12) between the deformable container (1) containing the product and the rigid outer container (2) receives outside air, at least when the pump (15) is actuated, via orifices (18, 20) made in the pump body (13) and the neck (17) of the deformable container (1) and via grooves (21) for the passage of air into the neck (16) of the outer container (2). Confinements mechanisms, such as a cap (3) mounted in a leaktight manner on the device, or a seal (4) forming a non-return valve against the orifice (18) for air intake, or, alternatively, a special stop limiting the displacement of the piston (6) of the pump (15), prevent the leakage towards the outside, via the reverse path, of vapors and/or gases which have migrated from the inside of the container (1) into the volume (12) between the containers (1, 2), when the pump (15) is not actuated.
REFERENCES:
patent: 4469250 (1984-09-01), Evezich
patent: 5273191 (1993-12-01), Meshberg
patent: 5292033 (1994-03-01), Gueret
patent: 5305921 (1994-04-01), Kock et al.
patent: 5366115 (1994-11-01), Kersten et al.
Kaufman Joseph
Societe d'Innovation Recherche Plastique
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