Drip liquid dispenser
First Claim
1. Packaging bottle for a liquid that is to be dispensed drop by drop, comprising a container (1) having a rigid neck (3) in which is mounted a dispensing head (4) forming an external endpiece (11) pierced with a duct for expelling the liquid from the said container (1), characterized in that it the said container consists of a deformable cylindrical wall closed, at its lower part, by a rigid cap (2) which is fixed on after the container (1) has been filled, and in that the said container has an elastically deformable boundary wall (6) for expelling a fraction of the liquid contained in the reservoir during each dispensing operation, in that the said dispensing head comprises, mounted across the path of the liquid thus expelled from the container, a membrane (31) which is partially hydrophilic, to allow the liquid to pass under the effect of a raised pressure exerted in the container by the deformation of the wall, and partially hydrophobic so that the membrane wetted by the expelled liquid nonetheless allows air from the outside to enter the container when the container elastically reverts to its initial shape, and in that it comprises a frangible partition (7) secured to the container for isolating the said membrane (31) from the liquid contained in the container (1) up to the time of first use, the said partition being torn by the passage of the said dispensing head from a security position into an availability position.
1 Assignment
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Accused Products
Abstract
The invention relates to a packaging device for a liquid that is to be dispensed drop by drop, comprising a container (1) with manually elastically deformable walls, which ends in a rigid neck (3) in which a head (4) for dispensing the liquid is mounted. A membrane (31) which is both hydrophilic and hydrophobic, advantageously antibacterial, is arranged in the dispensing head (4) across the passage of the liquid towards a duct expelling it to the outside. This membrane allows external air to enter the container (1) once the liquid has passed through it in the expulsion phase, and the bottle reverts elastically to its initial shape after each dispensing operation. A frangible partition (7) isolates the membrane from the liquid contained in the bottle until the time of first use whereupon it is fractured by a striker secured to the said dispensing head (4).
73 Citations
11 Claims
- 1. Packaging bottle for a liquid that is to be dispensed drop by drop, comprising a container (1) having a rigid neck (3) in which is mounted a dispensing head (4) forming an external endpiece (11) pierced with a duct for expelling the liquid from the said container (1), characterized in that it the said container consists of a deformable cylindrical wall closed, at its lower part, by a rigid cap (2) which is fixed on after the container (1) has been filled, and in that the said container has an elastically deformable boundary wall (6) for expelling a fraction of the liquid contained in the reservoir during each dispensing operation, in that the said dispensing head comprises, mounted across the path of the liquid thus expelled from the container, a membrane (31) which is partially hydrophilic, to allow the liquid to pass under the effect of a raised pressure exerted in the container by the deformation of the wall, and partially hydrophobic so that the membrane wetted by the expelled liquid nonetheless allows air from the outside to enter the container when the container elastically reverts to its initial shape, and in that it comprises a frangible partition (7) secured to the container for isolating the said membrane (31) from the liquid contained in the container (1) up to the time of first use, the said partition being torn by the passage of the said dispensing head from a security position into an availability position.
Specification