Patent ID: 7568597

Claim:
System of delivering a liquid to a pasty product, designed to be installed at an open end of a packaging element constituted by one of a flexible tube and a small bottom on which a user acts by manual pressure to cause the product to come out via integrated opening/closing means, wherein the system comprises: a base element formed by a hollow body that is attached at an open end of a tube and comprises a window associated with a movable strip of substantially matching shape and dimensions that can be moved in opening by pressure of the product, during a pressing action on the tube, to be returned automatically to an initial closed position when the pressure ceases or diminishes, and a cap designed to cover the base element at least in a top part comprising the window and the strip, and comprising an internal recess opposite the strip, of dimensions at least matching those of the strip and of such a depth as to allow a deflection in opening of the strip and consequently a receipt of the product in said recess, then its routing toward an outlet hole made in a top zone of the cap.