Device for dispensing a liquid in the form of drops

Patent metadata

Field	Value
Publication number	US-10640268-B2
Application number	US-201916282588-A
Country	US
Kind code	B2
Filing date	Feb 22, 2019
Priority date	Mar 27, 2008
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

The device makes it possible to dispense predetermined metered quantities of liquid. It includes a sealing member that can take up a liquid release position, allowing liquid to flow out of the device, and a non-return position preventing liquid from flowing back into the device. The sealing member is provided with metering means for metering out the liquid to be dispensed.

First claim

What is claimed is:

1. A device for dispensing predetermined metered quantities of liquid, the device comprising an end-piece having an inner core and an outer top casing, and a sealing member fastened between the inner core and the outer top casing and having a liquid release position allowing liquid to flow out of the device, and a non-return position preventing liquid from flowing back into the device, wherein:
the sealing member defines a metering element for metering out the liquid to be dispensed and forming drops of liquid;
the device further comprises a liquid-passing channel opening out into the metering element; and
the metering element comprises a flared shape that flares from said channel.

2. The device according to claim 1 , further comprising a bearing element that bears against the sealing member, in register with a recessed zone, to deform the sealing member by bending deformation so that it takes up its non-return position.

3. The device according to claim 1 , wherein the sealing member is flexible at least in part, and the device further comprises a bearing element that bears against the sealing member to deform the flexible portion of the sealing member by compression deformation so that it takes up its non-return position.

4. The device according to claim 1 , wherein the flared shape opens out into a substantially cylindrical shape.

5. The device according to claim 1 , wherein the sealing member is an elastomer element that is made entirely of elastomer.

6. A device for dispensing predetermined metered quantities of liquid, the device comprising a sealing member having a liquid release position allowing liquid to flow out of the device, and a non-return position preventing liquid from flowing back into the device, wherein:
the sealing member defines a metering element for metering out the liquid to be dispensed and forming drops of liquid;
the device further comprises a liquid-passing channel opening out into the metering element; and
the metering element comprises a flared shape that flares from said channel, wherein the sealing member comprises an elastomer portion and a rigid portion, said elastomer portion and rigid portion being constrained to move with each other.

7. The device according to claim 6 , wherein the metering element is formed in the rigid portion.

Assignees

• Nemera La Verpilliere

Inventors

• Painchaud Gaëtan
• Lanzi Sylvain
• Julia Xavier
• Grevin Guillaume

Classifications

• B65D47/18 Primary

  for discharging drops; Droppers (droppers in general B01L3/00; {pipettes connected to container closures B01L3/0282}) · CPC title

• B65D47/2081

  in which the deformation raises or lowers the valve port · CPC title

• A61J1/1468

  Containers characterised by specific material properties · CPC title

• B65D47/205

  the valve being formed by a tubular flexible sleeve surrounding a rod-like element provided with at least one radial passageway which is normally closed by the sleeve · CPC title

• A61F9/0008

  Introducing ophthalmic products into the ocular cavity or retaining products therein (putting in contact lenses A61F9/0061; introducing or retaining media in cavities of the body in general A61M31/00) · CPC title