SYSTEM FOR DISPENSING A FOAM OF A FLUID PRODUCT
First Claim
1. System for dispensing a foam of a fluid product comprising a head wherein a mixing chamber of said product with air is formed, said head having:
- a passage for product intended to place in communication a source of product with said chamber and a passage for air intended to place in communication a source of air with said chamber;
a unit for foaming which has a passage for supplying with a mixture coming from the chamber and a passage for dispensing the foam;
a supply valve of the mixing chamber which comprises a product valve and an air valve provided respectively on the passage for product and the passage for air, each of said valves being arranged to open the passage for product—
respectively for air in order to supply the mixing chamber;
a passage for return air which is provided with an air return valve arranged to open under the effect of a vacuum that the source of air exerts on it in order to allow for the air return in said source through said head;
said system being characterised in that the supply valve comprises a membrane whereon the product and air valves are formed, said membrane being arranged in order to be reversibly mobile starting from a pressure that the source of product or that the source of air exerts on it, between a stable position wherein the passages of product and of air are closed by the intermediary of the corresponding valve and a stressed position wherein the passages for the product and for the air are open in order to supply the mixing chamber.
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Accused Products
Abstract
The invention relates to a system for dispensing a foam of a fluid product (P) comprising a head (3) wherein a mixing chamber (4) of said product with air (A) is formed, said head having: a passage for product (23) and a passage for air (25); a unit for foaming (5); a supply valve (30) of the mixing chamber (4) which comprises a product valve (31) and an air valve (32); a passage for return air (33) which is provided with an air return valve (34); the supply valve comprising a membrane (30) whereon the product (31) and air (32) valves are formed, said membrane being arranged in order to be reversibly mobile starting at a pressure that the source of product (24) or that the source of air (26) exerts on it, between a stable position wherein the passages of the product (23) and of the air (25) are closed by the intermediary of the corresponding valve (31, 32) and a stressed position wherein the passages for product (23) and for air (25) are open in order to supply the mixing chamber (4).
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Citations
15 Claims
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1. System for dispensing a foam of a fluid product comprising a head wherein a mixing chamber of said product with air is formed, said head having:
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a passage for product intended to place in communication a source of product with said chamber and a passage for air intended to place in communication a source of air with said chamber; a unit for foaming which has a passage for supplying with a mixture coming from the chamber and a passage for dispensing the foam; a supply valve of the mixing chamber which comprises a product valve and an air valve provided respectively on the passage for product and the passage for air, each of said valves being arranged to open the passage for product—
respectively for air in order to supply the mixing chamber;a passage for return air which is provided with an air return valve arranged to open under the effect of a vacuum that the source of air exerts on it in order to allow for the air return in said source through said head; said system being characterised in that the supply valve comprises a membrane whereon the product and air valves are formed, said membrane being arranged in order to be reversibly mobile starting from a pressure that the source of product or that the source of air exerts on it, between a stable position wherein the passages of product and of air are closed by the intermediary of the corresponding valve and a stressed position wherein the passages for the product and for the air are open in order to supply the mixing chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification