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US 6,604,693 B2Granted
Method of spraying liquids under the form of foam by means of deformable containers and device using this method
AssigneeTaplast S.P.A.
InventorStefano Santagiuliana
Life of this patent
Estimating the term…
Abstract
A spraying device for dispensing liquids which foam by deformation of a container. A first body is coupled is the neck of a container. The body forms a chamber where an air liquid mixture is produced. A filter is located over a spraying duct for producing foam as the liquid passes therethrough. A second body surrounds the first body and contains a measured volume of liquid which enters the chamber from the suction tube when the container is inverted.
Claims8
A spraying device for dispensing liquids in the form of foam by manual pressure on a container having an open end for receiving air and liquid therein, comprising:
- a first body having a neck with a watertight coupling, and at least one filter element secured in the opening in the first body, defining a first chamber for mixing the air and the liquid, said first chamber having at least one hole for admitting the air and at least one hole for admitting the liquid;
- a second body surrounding a portion of said first body and defining together with said first body a second chamber having a suction tube opening and a suction tube secured therein communicating with said first chamber therethrough, for taking up a volume of liquid when the container is manually pressurized, said second chamber communicating with the container through said at least one hole for liquid and said at least one hole for air, said second chamber having a volume greater than the volume of the liquid taken up by said suction tube;
- and
- valve means formed in the first body having an outer opening for admitting air into the container to restore air inside said container after foaming.
1 more element
Dependencies are inferred from the claim text.